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Corporate Presentation
January 2022

                                                                                                1

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DISCLAIMER

 This presentation includes express and implied “forward-looking statements. Forward looking statements include all statements that are
 not historical facts, and in some cases, can be identified by terms such as “may,” “might,” “will,” “could,” “would,” “should,” “expect,”
 “intend,” “plan,” “objective,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “continue,” “ongoing,” or the negative of these terms, or
 other comparable terminology intended to identify statements about the future. Forward-looking statements contained in this presentation
 include, but are not limited to, statements about our product development activities and clinical trials, our regulatory filings and approvals,
 our ability to develop and advance our current and future product candidates and discovery programs, our ability to establish and
 maintain collaborations or strategic relationships or obtain additional funding, the rate and degree of market acceptance and clinical utility
 of our product candidates, the ability and willingness of our third-party collaborators to continue research and development activities
 relating to our product candidates, our and our collaborators’ ability to protect our intellectual property for our products. By their nature,
 these statements are subject to numerous risks and uncertainties, including factors beyond our control, that could cause actual results,
 performance or achievement to differ materially and adversely from those anticipated or implied in the statements. You should not rely
 upon forward-looking statements as predictions of future events. Although our management believes that the expectations reflected in our
 statements are reasonable, we cannot guarantee that the future results, performance or events and circumstances described in the
 forward-looking statements will be achieved or occur. Recipients are cautioned not to place undue reliance on these forward-looking
 statements, which speak only as of the date such statements are made and should not be construed as statements of fact.

 Certain information contained in this presentation and statements made orally during this presentation relate to or are based on studies,
 publications, surveys and other data obtained from third-party sources and our own internal estimates and research. While we believe
 these third-party studies, publications, surveys and other data to be reliable as of the date of this presentation, it has not independently
 verified, and makes no representations as to the adequacy, fairness, accuracy or completeness of, any information obtained from third-
 party sources. In addition, no independent source has evaluated the reasonableness or accuracy of our internal estimates or research
 and no reliance should be made on any information or statements made in this presentation relating to or based on such internal
 estimates and research.
                                                                                                                                                         2

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                                                            ENTRADA’S MISSION
                           Treating Devastating Diseases With
                                Intracellular Therapeutics

                                                                                                3

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 THE ENTRADA STORY

We are driven to transform the lives of patients by establishing Endosomal Escape Vehicle* therapeutics
  as a new class of medicines and become the world’s foremost intracellular therapeutics company

                           Platform                                                               Portfolio              People

                                                                              Diverse set of oligonucleotide
     A proprietary, modular and                                                                                 Led by a team of experts
                                                                                   applications and an
         broadly applicable                                                                                    with extensive experience
                                                                              expanding pipeline, including
   intracellular delivery platform                                                                               across drug discovery,
                                                                                       intracellular
   with potential in a wide range                                                                              development and company
                                                                               oligonucleotides, antibodies
        of therapeutic areas                                                                                         management
                                                                                      and enzymes

              We are harnessing our EEV Platform to develop intracellular therapeutics that are designed to engage
                    previously undruggable targets and revolutionize the treatment of devastating diseases
  * Endosomal Escape Vehicles are referred to as EEVs
                                                                                                                                           4

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LEADERSHIP TEAM AND BOARD OF DIRECTORS

                                                                                                                                          Board of Directors
                                                                                                                                          Kush Parmar, MD, PhD
                                                                                                                                          Managing Partner
                                                                                                                                          5AM Ventures
                                                                                                                                          (Board Chairman)

                                                                                                                                          Peter S. Kim, PhD
                                                                                                                                          Virginia & D.K. Ludwig Prof. of Biochemistry
                                                                                                                                          Stanford University

          Dipal Doshi                 Natarajan Sethuraman, PhD                    Nerissa Kreher, MD          Nathan Dowden              Todd Foley
          President & CEO                      Chief Scientific Officer               Chief Medical Officer    Chief Operating Officer    Managing Director
                                                                                                                                          MPM

                                                                                                                                          John Crowley
                                                                                                                                          Chairman & CEO
                                                                                                                                          Amicus Therapeutics

                                                                                                                                          Mary Thistle
                                                                                                                                          Special Advisor
                                                                                                                                          Bill & Melinda Gates Foundation

                                                                                                                                          Carole Nuechterlein, JD
                                                                                                                                          Head
                                                                                                                                          Roche Venture Fund
   Kory Wentworth, CPA                           Kerry Robert                    Jared Cohen, PhD, JD         Karla MacDonald
        Chief Financial Officer               Vice President, People                    General Counsel       Vice President, Corporate
                                                                                                                Communications & IR
                                                                                                                                                                                         5

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OUR DIFFERENTIATED AND EXPANDING PIPELINE

                 Entrada’s pipeline includes a diverse array of high potential and high value assets;
                       We plan to leverage early learnings to advance subsequent programs

                                                                                                                        Clinical
          Disease/Condition                                       Discovery                     Preclinical
                                                                                                              Phase 1   Phase 2    Phase 3

                                                     ENTR-601-44 Exon 44 Skipping Oligonucleotide
    Neuromuscular Disease: DMD
                                                     Exon 45 Skipping Oligonucleotide

     Neuromuscular Disease: DM1                      CUG Steric Blocker Oligonucleotide

   Neuromuscular Disease: Pompe                      GYS1 Knockdown Oligonucleotide

     Neurodegenerative Diseases                      CD33 Exon 2 Skipping Oligonucleotide

         Inflammatory Diseases                       IRF5 Knockdown Oligonucleotide

               Solid Tumors                          β-catenin Degrader Antibody

                   MNGIE                             ENTR-501 Enzyme Replacement

                                                                                                                                             6

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EEV PLATFORM

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ENDOSOMAL ESCAPE VEHICLE (EEV TM) PLATFORM

 The EEV Platform aims to solve a fundamental problem: lack of efficient cellular uptake and escape
   from the endosome. Both are critical to intracellular target engagement and therapeutic benefit

                                                                                                                  •       Cyclic structure designed to extend half
                                                                                                                          life and increase stability

                                                                                                                  •       Phospholipid binding potentially enables
                                                                                                                          broad biodistribution to all cells

                                                                                                                  •       Unique chemistry results in improved
                                                                                                                          uptake and endosomal escape

                                                                                                                  2.              Binding to
                                                                                                                                  Endosome        Nucleation         Budding           Post
                                                                                                                                  Membrane          Zones            Process          Collapse

                                                                                                                       EEVTMR

                                                                                                                   DextranAlexa

  The combined benefits of Entrada’s unique EEV Platform are designed to drive an enhanced therapeutic index
                                                                                                1. 90% retention after 24 hours based on mass balance 2. Sahni, Qian, Pei; ACS Chem. Biol. 2020
                                                                                                                                                                                                  8

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A BROADLY APPLICABLE PLATFORM

   Entrada has demonstrated intracellular uptake of unique moieties ranging from 1 kDa to 600 kDa

                    Antibodies                                                                   Enzymes                                   Oligonucleotides

  550-600 KDa          150 KDa              98 KDa             96 KDa              86 KDa          46 KDa         37 KDa      32 KDa    16 KDa        6 KDa            1-3 KDa

  Hybrid frataxin      Antibody           Thymidine            Purine             Alanine-       Human frataxin   PTP1B       EGFP     Nanobody   Oligonucleotide      Various
                                        phosphorylase         nucleoside         glyoxylate                       Catalytic                                         peptide cargos
                                                            phosphorylase     aminotransferase                    domain

                                                                                                                                                                                     9

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DIFFERENTIATED PHARMACOLOGY

We believe the unique properties of Entrada’s EEVs can potentially endow favorable pharmacologic
properties to therapeutics to enable improved half-life, uptake and expression throughout the body

   Long Half-Life in Circulation                                                                                 High Uptake In Tissue               Target Engagement in the Cell
                                                                                                                Neuromuscular
     ENTR-601-44 in NHP Plasma EEV-PMO
                                         10 6
                                         10 5                                                                                      Immunology
                    Concentration (nM)

                                                                                           30 mg/kg IV in NHP
                                         10 4
                                                                                                                                  and Oncology
                                         10 3
                                         10 2
                                         10 1                                                                    Skeletal and
                                         10 0
                                                                                                                cardiac muscle   Monocytes and
                                         10 -1
                                                 0         10         20       30          40         50                         macrophages
                                                                       Time (hr)

      ENTR-501 in NHP Plasma EEV-Enzyme
                         10 6
                                                                                                5 mg/kg IV
                                                                                                15 mg/kg IV
                         10 5                                                                   5 mg/kg SC
                                                                                                15 mg/kg SC
        Serum ENTR-501

                                                                                                                   Cerebellum
                         10 4
                                                                                                                                 Neurodegenerative
            (ng/mL)

                         10 3                                                                                                        and Pain
                         10 2                                                                                            DRG
                         10 1
                                         0       24   48    72   96    120   144    168   192   216   240
                                                                       Hours

                                                                                                                                                                                     10

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TRANSLATION FROM UPTAKE TO OUTCOMES

                               EEV-therapeutic candidates observed to significantly improve reaching intracellular targets and
                                 can potentially enable high tissue concentration across a range of therapeutic applications

                                                                               Long Half-Life                                                                                                            Upregulation via Exon Skipping                                          Splice Correction via CUG Repeat Block

                                                                 10 6                                                                                                              Cardiac Dystrophin Expression                                                                                                                                              Splicing of Mbnl1
                                                                                                                                   30 mg/kg IV in NHP
                                                                 10 5                                                                                                                    40                                                                                                              15
                                            Concentration (nM)

                                                                                                                                                                                                                                                                                  Exon 5 Inclusion (%)
                                                                 10 4

                                                                                                                                                                    % of WT Dystrophin
                                                                 10 3                                                                                                                    30
                                                                                                                                                                                                                                                                                                         10
                                                                                                                                                                                                                                                                                                                                                                                        EEV-PMO corrected
                                                                 10 2
                                                                                                                                                                                         20                                                                                                                                                                                            DM1 associated splicing
                                                                 10 1                                                                                                                                                                                                                                                                                                                   defects with a single
                                                                                                                                                                                                                                                                                                                5
                                                                 10 0
                                                                                                                                                                                         10
                                                                                                                                                                                                                                                                                                                                                                                                dose
                                                                 10 -1
                                                                                                                                                                                                                                                                                                                                                                                           **
                                                                                                                                                                                                                                                                                                                                                                                                          **
                                                                         0        10        20      30   40                        50                                                                                                                                                                           0
                                                                                                                                                                                         0
                                                                                             Time (hr)                                                                                                                                                                                                                                    WT Vehicle   DM1 Vehicle     30 mg/kg         15 mg/kg        30 mg/kg
                                                                                                                                                                                                               1W       2W           4W                                                                                                                              PMO-DM1             EEV-PMO-DM1

                                         High Concentration and                                                                                                                          Downregulation via Exon Skipping and                                                      Downregulation via Exon Skipping and
                                       Concomitant Gene Expression                                                                                                                         Nonsense Mediated Degradation                                                             Nonsense Mediated Degradation
                                                                                                                                                          Enables                                               1.5
                               10000                                                                     100
                                                                                                                                   Tissue Concentration                                                                                                                                                                             1.5                                  Knockdown of target protein
                                                                                                                                                                                                                                                           Near complete
 Tissue Concentration (ng/g)

                                                                                                                                                                                                                                                                                                                                                                        expression relevant to multiple
                                                                                                                                                                                          Proportion of GYS1
                                                                                                                                                                                          mRNA Expression
                                                                                                         80
                                                                                                                                                                                                                                                         knockdown of gene

                                                                                                                                                                                                                                                                                                         Relative IRF5 expression
                                1000
                                                                                                               Exon Skipping (%)

                                                                                                                                        Exon Skipping
                                                                                                                                                                                                                1.0                                                                                                                                                   immune mediated diseases with a
                                                                                                         60
                                                                                                                                                                                                                                                        expression relevant to                                                      1.0                                          single dose
                                 100                               DMD example                                                                                                                                                                          Pompe disease with a
                                                                                                         40                                                                                                     0.5                                          single dose                                                                                                                           ✱

                                  10                                                                                                                                                                                                                                                                                                0.5
                                                                                                         20
                                                                                                                                                                                                                0.0
                                                                                                                                                                                                                                                         **            **                                                                                                         ✱✱

                                                                                                                                                                                                                                                                                                                                                                 ✱✱✱
                                   1                                                                     0
                                                                                                                                                                                                                            e

                                                                                                                                                                                                                                         O

                                                                                                                                                                                                                                                                        O
                                                                                                                                                                                                                                                         O
                                                                                                                                                                                                                          cl

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                                                                                                                                                                                                                                                                        PM
                                                                                                                                                                                                                                                         PM
                                                                                                                                                                                                                        hi

                                                                                                                                                                                                                                                                                                                                    0.0
                                                                                                                                                                                                                      Ve

                                                                                                                                                                                                                                                                     V-
                                                                                                                                                                                                                                                      V-
                                       10                                20            30          40                                                                                                                               kg

                                                                                                                                                                                                                                                                   EE
                                                                                                                                                                                                                                                    EE
                                                                                                                                                                                                                                 g/
                                                                                                                                                                                                                                 m

                                                                                                                                                                                                                                                                   g
                                                                                                                                                                                                                                                    g
                                                                              Dose (mg/kg)

                                                                                                                                                                                                                                                                  k
                                                                                                                                                                                                                                                   k

                                                                                                                                                                                                                                                                                                                                                               μM

                                                                                                                                                                                                                                                                                                                                                                                  μM
                                                                                                                                                                                                                                                                                                                                                   e

                                                                                                                                                                                                                                                                                                                                                                                                    M
                                                                                                                                                                                                                                27

                                                                                                                                                                                                                                                               g/
                                                                                                                                                                                                                                                g/

                                                                                                                                                                                                                                                                                                                                                 cl

                                                                                                                                                                                                                                                                                                                                                                                                  3μ
                                                                                                                                                                                                                                                               m
                                                                                                                                                                                                                                               m

                                                                                                                                                                                                                                                                                                                                               hi

                                                                                                                                                                                                                                                                                                                                                             30

                                                                                                                                                                                                                                                                                                                                                                              10

                                                                                                                                                                                                                                                                                                                                                                                                3.
                                                                                                                                                                                                                                                              27
                                                                                                                                                                                                                                               .5

                                                                                                                                                                                                                                                                                                                                             Ve
                                                                                                                                                                                                                                             13
                                                                                                                                                                                                                                                                                                                                                                                                                   11

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DUCHENNE MUSCULAR DYSTROPHY (DMD)

                                                                                                12

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DMD DISEASE OVERVIEW

                             A significant therapeutic need exists within a validated DMD market;
                        A safe and effective approach is necessary to treat patients over the long term

•   Disease caused by mutations in the DMD gene and altered levels of                                            7.6%
    normal dystrophin
                                                                                                         8.1%
•   Lack of functional dystrophin leads to muscle cell membrane damage
    and progressive loss of function
                                                                                                  9.0%
•   Progressive muscle degeneration, wasting and paralysis generally
    leads to death via respiratory and/or cardiac failure in the third or
    fourth decade

•   ~30,000 patients in the US and Europe                                                         14.0%

•   Corticosteroids are the current standard of care

•   Exon skipping therapeutics have been approved based on a very
    modest improvement in dystrophin levels ranging from ~1 to ~6%                                    ~40% (~12,000 US and Europe total) of
                                                                                                        patients with DMD have mutations
•   Continued FDA approval of existing exon skipping drugs may                                       amenable to exon skipping of exons 44,
    require verification of clinical benefit in confirmatory clinical trials                                      45, 51 and 53

                                                                                                                                              13

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IN VIVO DATA IN THE RIGOROUS D2-mdx MODEL
SUPPORTS EEV POTENTIAL
                  Robust exon 23 skipping was observed using in the more rigorous D2-mdx model which closely
                    represents human disease due to the development of more fibrosis and less regeneration

                                            Heart                                                                       Diaphragm                                                             Quadricep
                                                                                                                                 ****                                                                   ****
                  100                                                                                       100                                                            120
                                                   **                                                                                                                                                           ****
                                                                                                                                        ****
                                                                                                                                                                           100

                                                                                          % Exon Skipping
                                                             **

                                                                                                                                                         % Exon Skipping
                                                                                                            80
% Exon Skipping

                   80
                                                                                                                                                                           80
                   60                                                                                       60
                                                                                                                                                                           60
                   40                                                                                       40
                                                                                                                                                                           40
                   20                      n.s.                                                             20            n.s.
                                                                                                                                                                           20
                                                                                                                                                                                                 n.s.

                    0                                                                                        0                                                              0
                                PBS               PMO             EEV-PMO                                         PBS            PMO           EEV-PMO                                 PBS              PMO            EEV-PMO

                                                                                                                                                                             *p
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 REPEAT LOWER DOSE TREATMENT RESTORES
 MUSCLE INTEGRITY IN D2-mdx MICE
                                                                                                                                                  EEV-PMO-23 treated D2-mdx mice exhibited broad dystrophin expression
                     Robust exon 23 skipping after repeat 20 mg/kg doses of
                                                                                                                                                    and restoration of muscle integrity when compared to wild type and
                               EEV-PMO-23 in the D2-mdx model
                                                                                                                                                                        control treated D2-mdx mice
                                                                                                                                                  Immunofluorescence (dystrophin staining in bright green) at 22 weeks, taken 4 weeks after last dose in treated animals
                                            Heart                                                              Diaphragm
                     100                          ****                                          100                         ****

                                                          ****                                                                       ****
                      80                                                                             80

                                                                            Exon skipping (%)
Exon skipping (%)

                      60                                                                             60

                      40                                                                             40

                      20                                                                             20              n.s.
                                         n.s.

                       0                                                                              0
                               Vehicle           PMO              EEV-PMO                                  Vehicle          PMO         EEV-PMO

                                                                                                                                                  Histopathology at 22 weeks, taken 4 weeks after last dose in treated animals
                                                TiA                                                                  Triceps
                                                ****
                                                                                                                            ****
                                                         ****
                                                                                                                              ****
                     100                                                                             100

                      80
 Exon skipping (%)

                                                                                                      80
                                                                                 Exon skipping (%)

                      60                                                                              60

                      40                                                                              40
                                                                                                                     n.s.
                      20             n.s.                                                             20

                       0                                                                               0
                               Vehicle          PMO              EEV-PMO                                   Vehicle          PMO        EEV-PMO    •     D2-mdx mice (n=6) were treated once monthly IV with 20 mg/kg of vehicle, PMO-23
                     *p
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CK CORRECTION AND FUNCTIONAL IMPROVEMENT
IN THE D2-mdx MOUSE MODEL
              EEV-PMO-23 delivers durable correction of serum CK and a correspondingly
significant improvement in functional outcomes when compared with PMO-23 alone after only 12 weeks

                                     Creatine Kinase:                                                                    Wire Hang Time:                                                           Normalized Grip Strength:
                                  12 Weeks Post Dosing                                                                12 Weeks Post Dosing                                                           12 Weeks Post Dosing
                                                                                                                                    ✱✱✱✱                                                                            ns
                                                 ns
                                                                                                                                          ✱✱✱                                                                            ✱✱

                                                       ✱✱
                                                                                                                             ✱✱✱✱                                                                            ✱✱✱✱

                                         ✱✱✱✱

                                                                                                                                                          Normalized grip strength F-gm/gm
                                                                                                                       ✱✱✱✱          ns         ✱                                            5         ✱✱✱✱         ns         ✱✱✱
                       400                                                                                 400
                                    ✱✱           ✱          ✱✱✱✱

                                                                                    Wire Hang Time (Sec)
                                                                                                                                                                                             4
 Creatine Kinase U/L

                       300                                                                                 300
                                                                                                                                                                                             3
                       200                                                                                 200
                                                                                                                                                                                             2

                       100                                                                                 100                                                                               1

                         0                                                                                   0                                                                               0
                             Wild Type    Veh         PMO       EEV-PMO                                          Wild Type    Veh         PMO   EEV-PMO                                          Wild Type    Veh        PMO    EEV-PMO

       •                D2-mdx mice (n=6) were treated once monthly IV with 20 mg/kg of vehicle, PMO-23                                                          *p
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SIGNIFICANT PROMISE OF ENTR-601-44 IN PATIENT
CELLS AND TRANSGENIC MOUSE MODELS
    Robust dose-dependent exon 44 skipping and
                                                                                                                                                                       Dose-dependent tissue exposure and exon skipping in cardiac and skeletal
 dystrophin protein restoration was observed in DMD
                                                                                                                                                                        muscles in a transgenic mouse carrying the full-length human DMD gene
patient-derived muscle cells treated with ENTR-601-44

                                                                     Exon Skipping
                                                                                                                                                                                         Heart                                                                                  Tibialis Anterior (TiA)                                                                                  Diaphragm

                                                                                                                                                                                                                                                                                                                                                                           100000
                                                                                                                                                                     10000                                                                                              10000                                                                                                                                           100

                                                                                                                                                                                                                                                                                                                                             Tissue Concentration (ng/g)
                                                                                                                                                                                                                100                                                                                                100

                                                                                                                                       Tissue Concentration (ng/g)

                                                                                                                                                                                                                                          Tissue Concentration (ng/g)
                                                                                                                                                                                                                                                                                                                                                                            10000

                                                                                                                                                                                                                                                                                                                                                                                                                              Exon Skipping (%)
                                                                                                                                                                                                                                                                                                                                                                                                                        80
                                                                                                                                                                      1000

                                                                                                                                                                                                                      Exon Skipping (%)
                                                                                                ****                                                                                                            80                                                       1000

                                                                                                                                                                                                                                                                                                                         Exon Skipping (%)
                                                                                                                                                                                                                                                                                                                   80
                                                                                  ****                                                                                                                                                                                                                                                                                       1000                                       60
                                                                          ****                                                                                                                                  60
                                         120                                                                                                                                                                                                                                                                       60
                % DMD Exon 44 Skipping

                                                                                        100.0                                                                          100
                                         100
                                                                                                        98.7     93.0                                                                                                                                                     100                                                                                                 100                                       40
                                                                                                                                                                                                                40
                                          80
                                                                                                                                                                                                                                                                                                                   40
                                                                                                                                                                        10                                                                                                                                                                                                     10                                       20
                                          60                                                                                                                                                                    20                                                         10                                      20
                                          40                                                                                                                                                                                                                                                                                                                                                                            0
                                                                                                                                                                                                                0                                                                                                                                                               1
                                                                                                                                                                         1                                                                                                                                         0
                                          20                    10.9                                                                                                                                                                                                        1                                                                                                       0    20     40    60     80   100
                                                       0                                                                                                                     0   20     40   60      80   100
                                              0
                                                                                                                                                                                      Dose (mg/kg)
                                                                                                                                                                                                                                                                                0   20     40   60      80   100                                                                              Dose (mg/kg)
                                                    Healthy    DMDΔ45                   10 µM           3 µM     1 µM
                                                                                                                                                                                                                                                                                         Dose (mg/kg)                                                                          Tissue Concentration
                                                                                                                                                                                                                                                                                                                                                                               (ng/g)                         Exon Skipping (%)

                                                            Dystrophin Restoration

                                                                                                                                                                      • hDMD transgenic mice express full-length human dystrophin gene which
                                                                                                                                                                        allows for preclinical testing (target engagement) of human sequence-
                                  140                                                                                                                                   specific PMO for DMD transcript correction
       % Dystrophin Restoration

                                  120                                                     ****
                                                  100.0
                                  100                                            ****

                                                                                                                                                                      • Exon skipping and tissue concentrations in various muscles groups
                                         80                             ****

                                         60                                             43.7

                                                                                                                                                                        assessed 5-day post 10, 20, 40 and 80 mg/kg IV dosage
                                                                                                       33.8
                                         40                                                                    24.7
                                         20
                                                               4.2
                                         0
                                                  Healthy     DMDΔ45                10 µM              3 µM    1 µM

                                                                                                                        ****p
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ENTR-601-44 IN NHP CONFIRMS LEAD CANDIDATE
                                                                                                  A single 30 mg/kg IV dose of ENTR-601-44 resulted in meaningful
     An extended circulating half-life for ENTR-601-44
                                                                                                levels of exon skipping in both skeletal muscles and the heart of the
               was observed in the NHP
                                                                                                      NHP which provides confidence in translational potential

 •     At 7 days post 1 hour IV infusion at 30 mg/kg, robust exon 44 skipping observed across different muscle groups isolated from the ENTR-
       601-44 treated NHP
                                                                                                                                                                        18

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ENTRADA DMD DATA SUMMARY

                                       Entrada’s mouse and NHP data are consistent and promising;
                                        These advances represent a robust set of translational data

  •     Promising exon skipping across mdx, D2-mdx, human dystrophin mouse and NHP studies
  •     Exon skipping translates to promising dystrophin production in heart and skeletal muscles
  •     Dystrophin production sufficient to result in functional improvement
  •     Durable dystrophin production over 4+ weeks from a single injection
  •     ENTR-601-44 candidate selected on the basis of exon skipping and tolerability with IND planned in 2H 2022
  •     Accelerating exon 45 candidate expected to enable second DMD candidate selection in quick succession

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MYOTONIC DYSTROPHY TYPE 1 (DM1)

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DM1 OVERVIEW

      DM1 is a debilitating multi-systemic disease with no available treatments; CUG repeats in DMPK
      mRNA sequester MBNL1 proteins, resulting in aberrant gene expression and protein expression

•     DM1 affects over 40,000 in US and over 50,000 in Europe
             Prevalence of at least 1 in 8,000* worldwide
             Congenital 15%, childhood 10%, or classical (adult onset) 75%
             Multisystemic; including myotonia, muscle weakness and atrophy,
              cardiac and pulmonary complications, cataracts and endocrine
              dysfunction
             Currently no approved therapies

•     DM1 is caused by CUG repeats in the mRNA that sequester
      MBNL proteins and retain them in the nucleus
            Mutant DMPK mRNA and MBNL proteins form aggregates called
             foci in the nucleus

•     MBNL activity is decreased as a result of sequestration
            MBNL proteins are responsible for splicing and expression of many
             downstream transcripts, including MBNL1, BIN1, INSR, LDB3 and
             SOS1

•     ASOs can be used to bind to mutant DMPK mRNA or to the
      CUG repeats
             Decrease the number of foci in the nucleus
             Increase MBNL activity and restore splicing and expression                          * Meola, 2013   Adapted from Todd and Paulson, 2012

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CUG-REPEAT BLOCKING PMO IN DM1 MYOTUBES

   Administration of EEV-PMO in a DM1 patient-derived cell line resulted in a dose-dependent
decrease in MBNL1 gene splicing associated with muscle tissue development and insulin response

                                                                                                                 MBNL1                                                                       SOS1                                                                              BIN1
                                                                                               80                                                                      80                                                                        100
                                                                                                                                        *
                                                                                                                               **                                              ***                ***                                                  80
                                                                                                                                                                                                                                                                     ***

                                                                                                                                                                                                                           % Exon 11 Inclusion
                                                                                                                                                 % Exon 25 Inclusion
                                                                          % Exon 5 Inclusion
                                                                                               60                                                                      60
                                                                                                                                                                                                                                                       60

                                                                                                                                                                                                                                                       40
                                                                                               40                                                                      40                                                                               4
              CUG repeat blocking                                                                                                                                                                           *
                                                                                                                                                                                                                                                            3                       ***
                                                                                                                     ***
              with EEV-PMO Steric                                                              20                                                                      20                                                                                   2

                    Blocker                                                                           ***                                                                                                                                                   1                              **

                                                                                                                                                                        0                                                                                   0
                                                                                               0

                                                                                                                                                                                                                                                                                                        µM
                                                                                                                                                                                                                                                                           1

                                                                                                                                                                                                                                                                                          µM

                                                                                                                                                                                                                                                                                                   µM
                                                                                                                                                                                                                                                                   y

                                                                                                                                                                                                                                                                                µM
                                                                                                                                                                                                                      µM
                                                                                                                                                                                       1

                                                                                                                                                                                                        µM

                                                                                                                                                                                                                µM

                                                                                                                                                                                                                                                                           M
                                                                                                                                                                                y

                                                                                                                                                                                                                                                                lth
                                                                                                                                                                                              µM
                                                                                                                                            µM
                                                                                                            1

                                                                                                                           µM

                                                                                                                                    µM
                                                                                                       y

                                                                                                                 µM

                                                                                                                                                                                       M
                                                                                                                                                                             lth

                                                                                                                                                                                                                                                                           D
                                                                                                            M
                                                                                                    lth

                                                                                                                                                                                                                                                                                                         3
                                                                                                                                                                                                                                                                               10

                                                                                                                                                                                                                                                                                      3

                                                                                                                                                                                                                                                                                                1
                                                                                                                                                                                                                                                                ea
                                                                                                                                                                                     D

                                                                                                                                                                                                                                                                                                       0.
                                                                                                                                                                                                                      3
                                                                                                                                                                                             10

                                                                                                                                                                                                        3

                                                                                                                                                                                                                1
                                                                                                                                                                        ea
                                                                                                            D

                                                                                                                                          3
                                                                                                                10

                                                                                                                           3

                                                                                                                                    1

                                                                                                                                                                                                                    0.

                                                                                                                                                                                                                                                            H
                                                                                                ea

                                                                                                                                        0.

                                                                                                                                                                        H
                                                                                               H
                                                                                                                       EEV-PMO
                                                                                                                                                                                              LDB3                                                                             INSR
                                                                                                                                                                       120                                                                                  8

                                                                                               *p
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EEV-PMO-CAG IN DM1 MURINE MODEL

           Single administration of EEV-PMO-CAG in DM1 murine model resulted in full correction of disease
                    relevant splicing biomarkers in various muscle groups and myotonia phenotype

                              Splicing of Atp2a1                                             Splicing of Nfix                                     Splicing of Clcn1                                 Splicing of Mbnl1
                        100                ***   ***                               80                                                       25                                                 15
                                                                                                                                                                                                                           WT Vehicle
Exon 22 Inclusion (%)

                                                                                                                    Exon 7a Inclusion (%)
                                                            Exon 7 Inclusion (%)

                                                                                                                                                                        Exon 5 Inclusion (%)
                         80                                                                                                                 20                                                                             DM1 Vehicle
                                                                                   60
                                                                                                                                                                                               10                          30 mg/kg PMO-CAG
                         60                                                                                                                 15
                                                                                   40                                                                                                                                      15 mg/kg EEV-PMO-CAG
                         40                                                                                                                 10                                                                             30 mg/kg EEV-PMO-CAG
                                                                                                                                                                                               5
                                                                                   20                   ***                                                                                                                *p
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ADDITIONAL PROGRAMS

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THERAPEUTIC AREA EXPANSION

       We plan to advance beyond rare disease markets into broader therapeutic areas over the next
       several years, bringing EEV-therapeutic candidates to more patients with devastating diseases

                                                                                                        CNS and Beyond
                                                                                                            Beyond

                                                                              Immunology and Oncology

                  Neuromuscular

                                                                                                                         25

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IMMUNOLOGY

  IRF5 has been shown to be a master switch implicated in proinflammatory cytokine release and
 M1 polarization across high unmet need diseases, making this an attractive “pipeline in a product”

                    IRF5 Implicated Across a Wide Range of Diseases                                                                 Significant Knockdown
                                                                                                                                             IRF5              of IRF5
                                                                                                                                                  Protein expression 24hrExpression   in vitro
                                                                                                                                                                          post-treatment

                                                                                                                                                                    1.5

                                                                                                                                         Relative IRF5 expression
                                                                                    CNS/Pain
                                                                                        MS
                                                                                  Neuropathic pain
                                                                                                            Rheum                                                   1.0
                                                                                                               RA
                                                                                                              JRA
                                                                                                               OA                                                                                               ✱
  Interferon Regulatory                                       Cardiometabolic
                                                               Atherosclerosis
                                                                                                           Polyarthritis

         Factor 5                                                 Obesity
                                                               CHF post AMI            Multisystem
                                                                                                                                                                    0.5
                                                                                                                                                                                                  ✱✱

                                                                                            SLE                                                                                       ✱✱✱
                Glycolysis                                                          Sjogren’s Syndrome
                                                                                       Scleroderma
                                                                                           HLH                 Gastro                                               0.0
      Pro-inflammatory cytokines                                                                           Ulcerative Colitis
                                                                                                               Crohn’s

                                                                                                                                                                                     µM

                                                                                                                                                                                                µM

                                                                                                                                                                                                               M
                                                                                                                                                                                e
     (IFN, TNFa, IL6,12, 23, etc.)

                                                                                                                                                                              cl

                                                                                                                                                                                                             3µ
                                                                                                                 PBC

                                                                                                                                                                            hi

                                                                                                                                                                                     30

                                                                                                                                                                                               10

                                                                                                                                                                                                           3.
                                                                    Pulmonary

                                                                                                                                                                          Ve
                                                                                                                NASH
                                                                     Asthma                                      ALD                 *p
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ADDITIONAL PLATFORM OPPORTUNITIES

                   Entrada continues to invest in and build upon our EEV Platform to extend our efforts in
                                       developing novel EEV-therapeutic candidates
                    Target                                          Platform Approach                                            Goal

                          DNA                                          Gene editing             Deliver CRISPR enzyme and repair gene function with guide RNA

                                                                       RNA editing              Deliver oligonucleotide therapeutics for RNA editing

                                                                       RNA splicing             Modify RNA via exon/intron splicing to activate protein expression
                          RNA
                                                                       RNA blocking             Block trinucleotide repeats in RNA to inhibit adverse binding

                                                                       RNA silencing            Silence or knockdown RNA to prevent protein expression

                                                                       Protein replacement      Replace proteins and enzymes

                         Protein                                       Protein inhibition       Inhibit protein signaling pathways

                                                                       Protein degradation      Degrade disease-causing proteins

                                                                                                                                                                     27

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CORPORATE HIGHLIGHTS AND
MILESTONES

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KEY CORPORATE HIGHLIGHTS

  With ~$122M cash and cash equivalents as of September 30, 2021, and our recent IPO, Entrada is
   well capitalized to deliver initial DMD human data from ENTR-601-44 and progress the pipeline

         IPO on October 29, 2021                                                         33 Distinct Patent
             (Nasdaq: TRDA)                                                                                           >100 Employees
                                                                                          Families on File

      • IPO Price: $20                                                        • Exclusive EEV Platform rights   • Seasoned leadership team
                                                                                                                  across functions
      • Shares Issued: 10,436,250                                             • 5 families with one or more
                                                                                granted patents covering        • Recognized as a Top Place to
      • Gross Proceeds: $208.7M                                                 composition of matter,            Work 2021 by The Boston
      • Common Shares Outstanding:                                              manufacturing and use             Globe
        31,169,207*                                                                                             • ~70% have advanced degrees
                                                                                                                  and ~50% have PhDs

* pro forma as of 9/30 basic shares outstanding
                                                                                                                                                 29

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POTENTIAL VALUE CATALYSTS

         We intend to build the leading intracellular therapeutics company with a growing pipeline of
           oligonucleotide and protein-based therapeutics; First IND filing expected in 2H 2022

                                                                                                                     Future
                                                                                                2023
                            2022
                                                                                                            Entrada expands the
                                                                               Entrada anticipates                portfolio
        Entrada anticipates                                                   delivering clinical data
                                                                                                         • ENTR-601-44 MAD/Phase 2b
      becoming a clinical stage
             company                                                      • ENTR-601-44 clinical data    • DM1 clinical data
                                                                          • DM1 IND filing               • DMD exon 45 IND filing
    • ENTR-601-44 IND filing
    • DM1 and DMD exon 45                                                 • Pompe candidate selection    • Pompe IND filing
      candidate selection                                                 • Immunology/oncology          • Immunology/oncology/CNS
    • Immunology/oncology in vivo                                           candidate selection            candidate selection
      PoC
                                                                                                                                      30

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