ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF

 
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ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
ProMIS Neurosciences Overview, updated July 29, 2020

Toronto Stock Exchange (TSX) ticker: PMN   OTCQB ticker: ARFXF
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ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
Forward looking statement: safe harbor

This slide deck may contain certain forward-looking information. Such information involves known and unknown
risks, uncertainties and other factors that may cause actual results, performance or achievements to be
materially different from those implied by statements herein, and therefore these statements should not be
read as guarantees of future performance or results. All forward-looking statements are based on the
Company’s current beliefs as well as assumptions made by and information currently available to it as well as
other factors. Readers are cautioned not to place undue reliance on these forward-looking statements, which
speak only as of the date of this slide deck. Due to risks and uncertainties, including the risks and uncertainties
identified by the Company in its public securities filings available online at www.sedar.com. Actual events may
differ materially from current expectations. The Company disclaims any intention or obligation to update or
revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
ProMIS Neurosciences overview
• Unique technology platform, rapid, cost-effective value creation

• COVID serology test – current test among industry best, goal to create a 2nd iteration that can
  confirm immunity using ProMIS proprietary reagents
    § Expected need for MMs – 100’s of MM’s of accurate immunity tests

• Alzheimer’s and dementia mission and portfolio: Treat – Detect – Prevent
    § PMN310 potential best in class therapy, scientific superiority to likely first in class Biogen’s aducanumab
        § Mid-2021 expected approval for aducanumab

    • Entered rapidly growing AD/dementia screening and diagnosis market – JV with leading diagnostic lab

    • Initial proof of concept for Alzheimer’s vaccine – ramping up vaccine development

• Numerous near-term catalysts

• Highly experienced management team and Boards

                                                                                                                    3
ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
Unique proprietary platform offers multiple opportunities for value
creation: timelines contingent on availability of adequate capital

                        Q3 2020                Q4 2020           Q1 2021              Q2 2021              Q3 2021              Q4 2021

     COVID-19         Scientific evaluations
Serology/Immunity           and assay                            COVID-19 Serology/Immunity Assay potential revenue – multiple sources
      Assay               development

     PMN310                                                                                                    PMN310 Phase 1 clinical trial in AD
  Best in class AD                 PMN310 IND enabling work (CMC – manufacturing; GLP Toxicology)               patients – biomarker and clinical
 antibody therapy                                                                                                           endpoints

Neurodegenerative     Equipment purchase                          Neurodegenerative disease: potential detection assay revenue, potential
     Disease          and assay validation                                                 diagnostic revenue
Diagnostics/Assays

Alzheimer’s Vaccine        Develop vaccine using ProMIS proprietary peptide antigens, preclinical validation, initiate IND enabling work

                          Therapy Development                       Diagnostic Development                       Diagnostic Revenue            4
ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
ProMIS unique technology platform: the key to unlocking value

            Antibody
                          Y

  Toxic Protein     Conformational
    or virus           Epitope

Antibodies bind to targets called EPITOPES ( )
 which have a specific conformation or shape

                                                                  5
ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
ProMIS unique technology platform: the key to unlocking value

            Antibody                             ProMIS has unique capability to predict epitopes including
                          Y                       their shape and make precise replicas – peptide antigens

                                                    Predict epitope
                                                                              Design and
                                                   including shape:
                                                                            create an exact
                                                    Supercomputer
                                                                                replica
                                                     Computations
                                                                                                  Peptide Antigen

  Toxic Protein     Conformational                                         Highly Specific                - Antibody Therapies
    or virus           Epitope                                             Peptide antigens               - Diagnostics
                                                                           Make “best in class”           - Vaccines

Antibodies bind to targets called EPITOPES ( )
 which have a specific conformation or shape

                                                                                                                      6
ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
ProMIS portfolio of therapies and diagnostics is based on the unique platform

       Alzheimer’s Disease                                                    COVID Serology

         PMN310                                             Epitopes for                    Serology Assay
      “Best in class”       Y                               neutralizing                 detecting neutralizing
      Alzheimer’s Tx                                         antibodies                       antibodies:
                                                                                               Immunity

                                                                   RBD1 of
                                                                    spike

                                                                           Coronavirus
  Toxic Oligomers       Conformational
    of amyloid             Epitope

                                   1RBD   = Receptor binding domain of spike protein                         7
ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
COVID-19 pandemic: need for serology assays that can
confirm protective immunity
• Situation
    • Currently limited, evolving understanding of human immune response to COVID-19 exposure
    • Historically rapid vaccine development; vaccines will be approved with very little information about
      variability and durability of immune response
    • Numerous existing serology assays provide accurate information about exposure to COVID-19,
      including Roche, Siemens, ProMIS/BCNI
    • But exposure does not necessarily mean immunity, the ability to resist re-infection

• ProMIS approach to evaluation of protective immunity
    • ProMIS peptide antigens (n=18) identified on RBD of COVID-19 virus
    • Peptide antigens may represent targets for neutralizing antibodies
    • Test sera from patients exposed to COVID-19 for neutralizing activity in laboratory assays with live
      coronavirus or pseudo-coronavirus
    • Goal: A high throughput, cost effective assay that accurately correlates with gold standard
      tests of antibody-based immunity

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ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
There is a way to measure antibody immunity…but much too expensive and
 cumbersome…ProMIS/BCNI are working to create a high volume, cost-effective assay

                  PROMIS ASSAY
                                                             COVID-19 Immunity is complex
              Do antibodies in the blood
            sample bind COVID-19 antigen?                    • Cellular (T-cells) vs humoral (antibodies)
                                                   YES       • High variability
                  Y Y Y Y                      Patient has
                                              been exposed   • Quality of immunity after COVID infection
  Y
YY    Y                                                      • Quality of immunity after vaccination
                                                             • Duration of immunity (months, years?)

 Blood            Y Y Y Y                        YES         • Immunity in elderly, other subgroups
sample                                         Patient is    • Infection may not lead to immunity from re-
                                               immune          infection
            Do neutralizing antibodies bind                  v ProMIS assay to provide answers
              ProMIS peptide epitopes?

                                                                                                       9
ProMIS Neurosciences Overview, updated July 29, 2020 Toronto Stock Exchange (TSX) ticker: PMN OTCQB ticker: ARFXF
If results of neutralization assay based on ProMIS proprietary antigens
are positive in Q4 2020, ProMIS may seek revenue in several ways

 • Offer ProMIS unique peptide antigens in multiple non-exclusive licenses to multiple global
   diagnostics players (Roche, Siemens, etc) ; $2-$6 per test potential
 • Deals with vaccine manufacturers for serology testing in clinical trials and post-marketing
 • Collaborate with a SPR instrument company (Danaher, Bruker), to seek EUA (Emergency
   Use Authorization) approval for our assay on a high throughput SPR platform
 • Serology testing for large projects e.g. province of Ontario, BC
 • Potential revenue opportunity Q4/2020, 2021

                                                                                                 10
COVID serology testing opportunity

               Roche                             Abbott                            Siemens                            Ortho

            - Major global players in current COVID serology, all sell test kits to diagnostics labs
            - Common to validate reagents on SPR (our platform), then sell reagents on a cost/test basis to them
            - Goal: create an assay that provides information about antibody immunity useful enough so that
             none of the four want to be left out

  Abbott CEO Robert Ford in FORBES, July 17
  “As vaccines become available, we would anticipate continued surveillance testing to monitor and assess for both natural and
  vaccine related immune response, which would be followed by a steady state of ongoing monitoring and tracking of vaccine
  protection…..that’s where I think we will see an increase in serology and antibody testing. I see that that’s going to be an
  opportunity for us and other companies that have the antibody test, I see that as being a real demand driver on the serology side”

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Alzheimer’s disease profoundly impacts patients, caregivers and society

      “Will Bankrupt Medicare
   if Therapy is not developed”

     Direct and Indirect Costs
    Today in the US $500BB….
         …. and the number
       is tripling by 2030….

   Despite two active decades of clinical trials, there are not yet any approved
         disease modifying therapies → a pressing, unmet medical need

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ProMIS Neurosciences: an integrated strategy
                      to address Alzheimer’s disease
                                                      Using ProMIS proprietary epitope prediction platform

AD characterized by brain accumulation
of misfolded proteins:                                  Detect                  Treat                  Prevent
• Extracellular Amyloid Beta (Aβ), then
• Intracellular Tau (Neurofibrillary Tangles)     ProMIS/BCNI Joint             PMN310              Amyloid Vaccine
Toxic oligomeric species lead to:                        Venture          Provide best in class   Devise safe, effective
                                                  Create state-of-the-        anti-amyloid        anti-amyloid and/or
•   Synaptic dysfunction and loss
                                                      art diagnostic          therapeutic         anti-tau vaccines to
•   Degeneration and death of neurons
                                                  clinical platform for   antibody that binds       induce a specific
•   Neuroinflammation                                 AD and other              only toxic         immune response
•   Brain atrophy                                 neurodegenerative          oligomers, not           against toxic
                                                         diseases         monomer or plaque            oligomers

         Aβ accumulation is slow and protracted, taking 20 to 30 years before cognitive symptoms
      This lengthy pre-symptomatic phase of AD provides a substantial opportunity to detect neuropathology,
                  prevent further brain abnormalities and treat patients before symptoms appear

                                                                                                                13
Billions of neurons are killed leading to the
Alzheimer’s (AD) brain

                                                Brain with Mild         Brain with AD1
      Healthy Brain
                                              Cognitive Impairment
    15 years pre-symptomatic                              5 years MCI   10 years Alzheimer’s

    Toxic oligomers of amyloid cause tau to become toxic, increase neuroinflammation, neurons and
                                              synapses die

                Neurofilament light (NfL) increases as neurons die at faster rate, P-tau181 increases as
                                   amyloid oligomers increase toxic tau oligomers

                1   Reviewed in Bloom 2014, JAMA Neurol
                                                                                                           14
Alzheimer’s disease: soluble toxic Aβ oligomers – not plaque or
  monomers – are the most neuropathogenic Aβ species
• Synapse abnormalities and memory impairment correlate poorly                                             In vivo impairment of recognition memory
  with plaque burden in human and mouse AD1,2
                                                                                                         by Ab oligomers, not monomers and not fibrils10
• Aβ monomers and Aβ insoluble fibrils (plaque) have little or no                                                            Monomers            Oligomers                Fibrils
  demonstrable toxicity in vitro or in vivo3-5

• Soluble Aβ oligomers show the highest degree of neurotoxicity6
    • Toxicity in primary neuron cultures and brain slices3,5,7-9
    • Induction of cognitive impairment in rodents3,4,10

            Synaptotoxicity of human Ab oligomers
               on hippocampal neurons in vitro7
                5min           6h                 24h        24h control

                                                                                                                   Normal         Monomers          Oligomers         Fibrils
                                                                                                                                              Ab species injected

                             1Jacobsen  et al, 22006, PNAS; 2Brier et al, 2016, Science Trans Med; 3Shankar et al, 2008, Nature Med; 4Cleary et al, 2005, Nature
                             Neuroscience; 5Hong et al, 2016, Science; 6Benilova et al, 2012, Nature Neuroscience - Review; 7Lacor et al, 2007, J Neuroscience; 8Jin et         15
                             al, 2011, PNAS; 9Lauren et al, 2009, Nature; 10Balducci et al, 2010, PNAS
PMN310: an anti-Aβ-oligomer antibody with strong
         potential to demonstrate best-in-class characteristics
Biogen’s aducanumab EMERGE study validates the amyloid hypothesis
Aducanumab and BAN2401 are only partially selective for amyloid
oligomers
    • Aducanumab (phase 3) and BAN2401 (phase 2) showed modest but meaningful
      efficacy in reducing cognitive worsening
    • Both significantly bind amyloid plaque → ARIA-E (patchy brain swelling)
    • Neither bind monomer (the physiologic amyloid species)

PMN310 is a next-generation, best-in-class anti-amyloid therapy
    • Highly selective for only toxic oligomers
                                                                                        Aβ amino acids 13-16 (HHQK)
    • Dose will not be limited by off-target binding or side effects
                                                                                        A unique, Aβ oligomer specific
         • Does not bind monomer                                                        epitope targeted by PMN310
         • Does not bind plaque → likely no ARIA-E
    • All dosed PMN310 will focus on neutralizing toxic oligomers → potential greater
      clinical efficacy

                                                                                                                16
There are three forms of amyloid, choosing the correct target is critical….

                                                 Toxic oligomers –
                                               Toxic oligomers
                                              thousands
                                                                  –
                                                         of scientific
                                                                                  Plaque
                                                                              Plaque        – usually
                                                                                      – usually  present,
              Monomer – Important               Toxic oligomers  –
Forms of     Monomer    – health
                          Important          thousands   of scientific        butpresent,
                                                                                   no –significant
                                                                              Plaque               role
                                                                                                   no in
                                                                                              butpresent,
                                                                                         usually
                for brain
              Monomer   – Important              studies showing
                                              thousands  of scientific
Amyloid         for brain health                studies  showing              but       diseaserole
                                                                                 significant
                                                                                   no significant    in in
                                                                                                   role
                 for brain health                  neurotoxicity
                                                 studies showing
                                                  neurotoxicity                        disease
                                                                                       disease
                                                   neurotoxicity
             10 programs/25 phase
              2 and 3 clinical trials
              targeting monomer
 Amyloid        All negative
 Binding      4 programs/13 phase 2 and 3 clinical trials non-selectively targeting all forms of amyloid, wasted
profile of                    too much ammunition on abundant monomer to be effective
 clinical                                                All negative
programs                                     Two drugs: Biogen’s aducanumab and EISAI’s BAN2401 partially selective
                                             FOUR OUT OF FOUR POSITIVE*(Two Phase 2 trials, one
                                             Phase 3 program*)
                                             !!! DOSE-LIMITING TOXICITY side effect ARIA-E** due to plaque binding !!!

              * Using Biogen’s presentation of patients consenting to V4 amendment, receiving 10mg dosing
                                                                                                                   17
              ** ARIA-E (Amyloid Related Imaging Abnormality- Edema) also known as brain swelling
Four positive trials…partially selective antibodies…higher dose over long duration
leads to better outcomes, but all limited by patchy brain swelling (ARIA-E)

   Biogen Ph1b “PRIME”   Eisai BAN2401 Phase 2             Biogen pivotal EMERGE                     Biogen pivotal ENGAGE
      December 2014             July 2018                        Dec 2019*                                Dec 2019**

                                                 * Final Intent-to-treat data set   ** Post-protocol version 4 data set   18
The three largest products in industry history were not first in class, but
“best in class” – the inventors identified improvements to existing drugs

                                                       ProMIS following the “best in
                                                       class” playbook with PMN310
 Peak
 Sales                                                 • Improved selectivity for toxic
 $BB’s                                                    oligomers
                                       $25BB           • No binding to plaque = Lower
                                                          risk of ARIA-E = Better safety
                        $16BB                          • Ability to safely dose higher
          $12BB                                        • No “waste of ammunition” on
                                                         non-toxic amyloid -> Greater
                                                         efficacy
         Lipitor       Humira        Sovaldi/Harvoni
         Cholesterol   RA, Crohn’s   Hepatitis C
         1996          2003          2014

                                                                                  19
Binding the right form of toxic oligomer is critical……

              Bapineuzumab (Pfizer) Solanezumab (Eli Lilly)         Aducanumab (Biogen)            PMN310
              •      Phase 2 failure          •   Phase 2 failure   •   Phase 2 & 3 success   •  Selective binding to
              •      Phase 3 failure          •   Phase 3 failure   •   ARIA-E side effect       oligomers
              •      ARIA-E side effect                                                       -> Expected improvement in
                                                                                                 efficacy & safety

MONOMERS
- binding wastes
therapeutic ammunition

FIBRILS (Plaque)
- binding wastes
therapeutic ammunition
- contributes to ARIA-E
side effect

OLIGOMERS*
- the right target

                                 * Synthetic oligomers                                                            20
ARIA-E associated with aducanumab, BAN2401 & bapineuzumab; PMN310 lack of binding
to Aβ plaque strongly suggests a potential safety advantage

              Aducanumab                                            PMN310

 Plaque
                                                                                         No binding to plaque
 binding
                                                                                         or vascular deposits

                                                                                         Most likely no ARIA-E*

 Vascular
 deposit
 binding

              * ARIA-E (Amyloid Related Imaging Abnormality- Edema) also known as brain swelling      21
PMN310 shows superior binding to toxic oligomers from human AD brains vs other
antibodies directed against amyloid-beta

                                 50

                                                                                                     • Binding of antibodies to the toxic oligomer-
         Binding Response (RU)

                                 40
                                                                                                       enriched LMW fraction of soluble human AD
                                                                                                       brain extract was evaluated by surface
                                 30                                                                    plasmon resonance (SPR)

                                 20                                                                  • Results representative of over 10 SPR runs
                                                                                                       with extracts from 11 different AD brains
                                 10                                                                  • huIgG1 = Background control

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                                                           Source for comparative reagents: Creative Biolabs                                   22
Administration of PMN310 to mice: prevents loss of short-term memory
formation caused by toxic oligomers, by saving mouse neurons

                   THE EXPERIMENT                                                                                     0.6                     THE RESULTS

                                                                                               Discrimination Index
• Mice are tested for discriminating objects after                                                                             *                           *
                                                                                                                      0.4
  brain injection of:
    • Buffer (vehicle) - normal response                                                                              0.2

    • Toxic Aβ oligomer                                                                                               0.0                     #

    • PMN310 and buffer (vehicle)                                                                                                                       PMN310             PMN310
                                                                                                                      -0.2
                                                                                                                              Vehicle        AβO        + vehicle           + AβO
    • PMN310 and Aβ Oligomer                                                                          N=12 per arm, *different from AβO (p < 0.05), #different from vehicle (p
PMN310: potential for value-creating clinical data in the near term
  - likely positive market developments could amplify PMN value

            2020                            2021                                  2022

                Aducanumab     Aducanumab    Aducanumab Launch and Market Development     BAN2401
                   Filing        Approval     - Reimbursement, Med Ed: ARIA-E screening   Ph 3 data

                             ProMIS                   Sporadic AD Phase 1: 3 month Pbo control,
                     Final IND enabling work               9 month extension, MAD design

                                                             AD in Down Syndrome - prevention,        Potential Approval Path:
                                                             treatment, or both: Biomarker and         AD in Down Syndrome
                                                                   clinical endpoint readout

    • Recent advances in blood-based biomarkers may allow ProMIS to detect an objective treatment
      signal as early as Phase 1, potentially providing rapid & cost-effective proof-of-concept

                                                                                                                         24
ProMIS plans to use biomarkers in its first clinical study, which could show a
disease modifying treatment effect at a cost of $5MM-$10MM

                                                                                           Placebo/ Large
                                  Placebo dataset as an historical control                 natural history
   100*                                                                                    dataset
                                                                                                             Potential biomarkers:

                                                                                           3 mg/kg           NfL – Neuronal Loss

Blood                                                                                      10 mg/kg          P-tau181 - tau toxicity
NfL               Potential for meaningful data                                            20 mg/kg          Others
                    in 6-12 months from trial start…
                                                                                           40 mg/kg
                                                                                           80 mg/kg

            0                                      6                                  12      Months

 * 100 = patient baseline value                Dose escalation design: 3-month placebo-control, then 9-month open-label extension

                                                                                                                                     25
Alzheimer’s/Dementia screening, diagnosis, and disease monitoring

     Historical: AD       Recent advance:                            …Plus proprietary
                                             Future Vision A/T/N
  diagnosis at autopsy        A/T/N                                       assays

                            Amyloid PET                            TDP43 , Alpha Synuclein
                                                  P-tau181          - Differential diagnosis
                                                Blood based
                               Tau PET

                                                                    Other assays – overall
                                                    NfL                  algorithm
                            Cortical MRI        Blood based

                                                   ~$100
                         $10,000 - $15,000

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ProMIS/BCNI Joint Venture to build a diagnostic revenue base

• Significant progress over past several yrs. to advance a more precise diagnosis of AD
• Introduction of A/T/N (amyloid/tau/neurodegeneration) criteria 2 years ago offered an unbiased approach for
  objective biological diagnosis of AD
    • However, the A/T/N diagnostic approach, until recently, required either costly PET and MRI scan assessments or
      invasive lumbar puncture to measure specific biomarkers in cerebrospinal fluid (CSF)
• Blood levels of NfL (neurofilament light chain) and P-tau181 (phosphorylated tau181)
    • Provide equally precise A/T/N characterization as imaging or CSF measurements, and can thus offer convenient, cost-
      effective and objective detection and monitoring of the AD process
• JV/collaboration to first offer existing blood-based assays for NfL and P-tau181
• Further assays to be added potentially incorporating ProMIS’ proprietary peptide antigens & tests for additional
  neurodegenerative diseases
• ProMIS’ ultimate mission with its partner, BCNI, is to build a portfolio of assays that enables early detection and
  monitoring of disease progression before symptoms arise
• Discussions for screening projects have started – goal revenue in 2021, possibly Q4 2020

                                                                                                                  27
ProMIS therapeutic vaccine for Alzheimer’s disease

• Large patient population with symptomatic AD in need of effective treatment (n≥5M, USA) –> Therapeutic vaccination

• Ever greater number of individuals in the pre-symptomatic phase of the disease (potentially 40% of the population over 65, ~50M) –
  > Prophylactic preventative vaccine

• Vaccine approach will benefit from recent progress in the development of blood-based biomarkers of neurodegeneration to diagnose
  AD and identify individuals at risk of developing disease

• ProMIS discovery platform being applied to devise a safe and effective vaccine to induce a specific immune response
  against toxic Ab oligomers
    • Identified a set of 6 conformational peptide epitopes selectively exposed on toxic Ab oligomers
    • All 6 peptide epitopes shown to be capable of inducing selective and protective antibodies against toxic Ab oligomers
    • Successful proof of concept vaccination study conducted with one of the peptides (cSNK) in a mouse model of AD (APP/PS1
      mice): Neuronal protection and improvement in cognitive deficits2
    • Concept: multivalent vaccine with some or all 6 Ab peptides. Tau peptides recently identified could also be included.

• Immediate aims: Construct and test multivalent Ab vaccine for ability to induce a protective antibody response

                                1Marciani   DJ, 2019, AAAS Research, https://doi.org/10.34133/2019/5341375; 2Silverman, JM et al, 2018, ACS Chem Neurosci
                                                                                                                                                            28
Benefit of vaccination with ProMIS Ab oligomer (AbO) epitope

      Mice vaccinated with conformational Ab oligomer                              Biological support for multivalent vaccine approach:
              epitope (cSNK) coupled to KLH                                          Greater binding with mixture of sera from mice
                                                                                   immunized with different AbO epitopes vs immune
Robust, sustained antibody             Improvement in behavioral                             serum against individual peptides
     response (SPR)                     deficits of APP/PS1 mice
                                                                                                              HFIP Ab              Untreated Ab
                                                                                                              monomers
                                                                                                              AbM(HFIP)           monomers
                                                                                                                                 AbM(untreated)              AbO
                                                                                                                                                             AbO(SynAging)
                                                                                             80
                                                                                                                                                                                    SPR

                                                                                             60

                                                                   Binding Response (RU)
                                                                                             40

                    Protection against synaptic damage
                                                                                             20

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Neurosci 9: 1591-

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ProMIS: current portfolio of antibodies selectively targeting
   toxic mis-folded proteins
                                        Predict                          Produce                               Prioritize                 Lead program early POC

 Scientific Literature:
mis-folded protein role                                                                                     Assess functional                   IND enabling
                                    Predict
                                                                  Immunize and screen                     benefit in vitro and in               development
       in disease               conformational
                                                                   antibody candidates                     vivo; assess binding              Biomarker readouts
    pathogenesis;              epitopes on target
                                                                      for selectivity                     strength to enriched                of pharmacologic
 role of other forms           molecular species
                                                                                                           patient biomaterial                   effect in Ph1
 (molecular species)

                                                                                                                                             PMN310, ready for final
      Amyloid beta
                                                                                                                                               IND enabling work
                                                                                                                  Several leads, active
    Alpha Synuclein                                                                                              partnering discussions

                                                                                                                 Several leads, active
         TDP43
                                                                                                                partnering discussions

          tau                                                         Early leads, immunization ongoing , active partnering discussions

  Many ongoing discovery: RACK1, DISC1, FUS, SOD1, Amylin, PrP,
                             other

                                                                                                                                                                  30
ProMIS Summary Investment Thesis

• Unique technology platform – rapid, cost-effective, differentiated
• Rapid response to COVID-19; goal to create differentiated immunity serology assay, potential near term revenue if
  successful
• Strategic portfolio in Alzheimer’s based on unique platform – Detect – Treat – Prevent
• PMN310 scientifically superior to likely “first in class” therapy Biogen’s aducanumab, PMN310 selective for toxic
  oligomers, stronger binding
• Biogen filed for regulatory approval, potential launch mid 2021, will be strong catalysts for the field, especially
  improved amyloid targeted therapies like PMN310
• ProMIS broad portfolio, programs targeting mis-folded versions of TDP43, alpha synuclein, tau, ongoing partnering
  discussions (timing affected by industry priority shift to COVID, lab closures, etc.)
• Aducanumab launch will also likely lead to dramatic growth in demand for screening and diagnosis of dementia
• ProMIS JV with BCNI will enable capitalizing on that growing demand with both established and proprietary assays
• ProMIS technology enables potential Alzheimer’s vaccine – building on early POC

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Experienced leadership team
Name                      Title            Years of Experience                    Prior Experience
                                                                 §   Former SVP at Genzyme, with senior roles integrating commercialization, drug
                                                                     development, and deal making
Gene Williams      Executive Chairman             25+            §   Recently the CEO of Dart Therapeutics, an Orphan Disease drug development
                                                                     company
                                                                 §   Founder and director of Adheris, which became the largest company in the
                                                                     patient adherence/compliance area
                                                                 §   Held positions as SVP of Strategic Product Development at SmithKline
                                                                     Beecham (now GSK)
Elliot Goldstein         CEO                      25+            §   Chief Operating Officer and Chief Medical Officer of Maxygen
                                                                 §   Chief Operating Officer at DART Therapeutics

                                                                 §   Holds the Canada Research Chair in Neurodegeneration and Protein
                                                                     Misfolding Diseases,
Neil Cashman       Chief Science Officer          25+            §   Serves as the Director of the University of British Columbia ALS
                                                                     Centre,
                                                                 §   Awarded the Jonas Salk Prize for biomedical research in 2000

                                                                 §   Professor at UBC in the Department of Physics and Astronomy since 2001
                                                                 §   Appointed as the Canada Research Chair in Theoretical Molecular Biophysics
Steven Plotkin     Chief Physics Officer          20             §   Associate member of the Genome Sciences and Technology Program, the
                                                                     Bioinformatics Program, and the Institute for Applied Mathematics at the
                                                                     University of British Columbia
                                                                 §   Founding Managing Director of Danforth Advisors
                                                                 §   Served as the Chief financial officer of Homology, Inc, GenePeeks,
Dan Geffken               CFO                     25+                Inc., Transkaryotic Therapies, Inc., Cidara, Inc., Apellis, Inc. and
                                                                     Stealth BioTherapeutics, Inc.

                                                                 §   Former VP of Research at Genzyme
                   Chief Development              25+
                                                                 §   Associate Immunopathologist at SmithKline Beecham where she
Johanne Kaplan           Officer
                                                                     established an Immunotoxicology program
                                                                 §   Her work has resulted in over 60 scientific publications and multiple patents

                                                                 §   Former VP, Global Clinical Leader for Parkinson’s disease, and Clinical Head
                                                                     of the Neuroscience Research Unit for Pfizer, Inc
James Kupiec       Chief Medical Officer          25+            §   Clinical focus on development of therapies for neurodegenerative disorders
                                                                 §   Held positions at Sanofi-Synthelabo and Ciba-Geigy Pharmaceuticals

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Independent board of directors
Name                 Years of Experience         Prior Experience
                                           §    President and CEO of Sunovion CNS Development
                          25+                  Canada ULC
Anthony Giovinazzo                         §   President, CEO and a Director of Cynapsus Therapeutics
                                               from 2009 to 2016 and one of the three original inventors
                                               and patent holders of the company’s Parkinson’s focused
                                               technology
                                           §   Chief Scientific Officer & Executive VP for Research at
                          25+                  ImmunoGen
Richard Gregory                            §   Held a variety of roles at Genzyme and Sanofi-Genzyme,
                                               including Vice President for Gene Therapy, Head of
                                               Corporate Research and Head of R&D

                                           §   Co-founded the management consulting firm, Oliver
                          40+                  Wyman & Co
Bill Wyman                                 §   Former President of the Management Consulting Group
                                               called Booz Allen and Hamilton

                          15+              §   Founding director and partner at FiveT Capital Holding AG
                                           §   A board member of Insilico Biotechnology AG
Johannes Roth

Pat Kirwin                                 §   Senior partner at Kirwin LLP
                          30+              §   Advises and represents businesses in a range of industries and
                                               sizes from local to multinational

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Scientific Advisory Board
Name                      Years of Experience                          Prior Experience                                                  Affiliations
                                                Medical Director & Principal Investigator of Toronto Memory Program
Sharon Cohen, MD                 20+            FRCPC in neurology from Royal College of Physicians of Canada and a fellowship in
                                                Behavioural Neurology from the University of Toronto

                                                Director of the Center for Translational Research in Neurodegenerative Disease at the
Todd Golde, MD, PhD              20+            University of Florida
                                                Dean for Neurosciences Initiatives, Distinguished Professor of Neurosciences, and
Bill Mobley, MD, PhD             25+            Florence Riford Chair for Alzheimer Disease at the University of California, San Diego

                                                Scientific Director, Alzheimer Prevention Program at Barcelonaβeta Brain Research
José Molinuevo, MD, PhD          20+            Center, Barcelona Spain
                                                Associate Professor, Pompeu Fabra University, Barcelona, Spain

                                                Previous Henry P & Georgette Goldschmidt Professor & Chairman, Department of
C. Warren Olanow, MD             25+            Neurology at Mount Sinai School of Medicine, presently Professor Emeritus Department
                                                of Neurology & Department of Neuroscience, CEO of CLINTREX

                                                Professor Institute of Psychiatry, Psychology and Neuroscience at King’s College
Andre Strydom, MD, PhD           25+            London
                                                Honorary Consultant psychiatrist, South London and the Maudsley NHS Foundation
                                                Trust
                                                Professor of Neurology at Harvard University, Vice Chair of Neurology, Director of
Rudy Tanzi, PhD                  20+            Genetics & Aging Research Unit, Co-Director McCance Center for Brain Health at Mass
                                                General Hospital
                                                Associate Professor of Neurology and Research Professor at Emory University Yerkes
Lary Walker, PhD                 20+            National Primate Research Center

Hans Frykman, MD, PhD                           Clinical assistant professor of medicine at the University of British Columbia
                                 20+            CEO and Medical Director of BC Neuroimmunology Lab (BCNI)

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Thank You
Please feel free to contact us with any additional questions.

Eugene Williams, Executive Chairman                             Elliot Goldstein, MD, CEO
eugene.williams@promisneurosciences.com                         elliot.goldstein@promisneurosciences.com
+1 (617) 460-0978                                               +1 (415) 341-5783

Website: www.promisneurosciences.com
Twitter: https://twitter.com/ProMISinc
LinkedIn:
https://www.linkedin.com/company/promis-
neurosciences

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