Virus Powered Immunotherapies against Solid Tumors - Corporate Presentation 29 June 2021
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Disclaimer This presentation contains forward-looking statements, which are subject to numerous risks and uncertainties, which could cause actual results to differ materially from those anticipated. There can be no guarantee that (i) the results of pre-clinical work and prior clinical trials will be predictive of the results of the clinical trials currently under way, (ii) regulatory authorities will agree with the Company’s further development plans for its therapies, or (iii) the Company will find development and commercialization partners for its therapies in a timely manner and on satisfactory terms and conditions, if at all. The occurrence of any of these risks could have a significant negative outcome for the Company’s activities, perspectives, financial situation, results and development. For a discussion of risks and uncertainties which could cause the Company's actual results, financial condition, performance or achievements to differ from those contained in the forward-looking statements, please refer to the Risk Factors (“Facteurs de Risques”) section of the Universal Registration Document, available on the AMF website (http://www.amf-france.org) or on Transgene’s website (www.transgene.fr). Forward-looking statements speak only as of the date on which they are made and Transgene undertakes no obligation to update these forward-looking statements, even if new information becomes available in the future. 2
A World-Leader in Virus Powered Immunotherapies Click to edit Master title style Ability to Customised Demonstrated Integrated Ability Attractive Transgene’s select and and off-the- induction GMP to conduct technologies technologies engineer shelf products of immune manufacturing clinical could deliver Collaborations various response, capacity for studies until with NEC, a game products, including rapid delivery POC Merck/Pfizer, Solid safety of pilot scale changing thanks to our tumor-specific AstraZeneca, experience in track record T cell response, batches approach viral vectors, associated with to the Mayo Clinic, protein anti-tumor Institut Curie treatment of engineering, activity solid tumors and tumor antigens Right virus Right payload Right indication Right patient population 3
Our Expertise Translates into Two Unique Technology Platforms Able Click toto edittarget multiple Master title style solid tumors THERAPEUTIC VACCINE (MVA) Patient specific antigens selected to generate the optimal immune response Vaccinia Immune T cell activation through multi-mechanisms vector • Priming of innate and adaptive TUMOR CELL Enlarged immunity immune DEATH response & • Demonstrated safety repertoire ONCOLYTIC VIRUS (VVcopTK-RR-) Direct and specific tumor oncolysis Immune cells activation through multi-mechanisms Additional activity generated by therapeutic payloads 4
Multiple Opportunities to Transform Solid Tumor Therapy Click to edit Master title Product style Indication Target/Transgene Design Preclinical Phase I Phase II Next step THERAPEUTIC VACCINES Ovarian cancer 1st data 4Q 2021 TG4050 30 neoantigens Head and neck cancers 1st data 4Q 2021 Anogenital HPV+ Interim analysis TG4001 cancers HPV 16 E6 – E7 around end 2022 ONCOLYTIC VIRUSES (OV) Gastro-intestinal Last patient enrolled cancers (IV*) 5-FU Q4 2021 TG6002 chemotherapy 1st safety/translational Colorectal cancer (IHA*) 2H 2021 BT-001 Solid tumors Anti-CTLA4 1st Phase I data + GM-CSF 1H 2022 Best candidates OVs Solid tumors Undisclosed selection to enter into clinical dev. Potential option 5 OVs Undisclosed exercise 5 * IV: intravenous administration, IHA: intrahepatic artery administration
Individualized Neoantigen Vaccine Taking the Treatment of Each Patient’s Tumor to a New Level Cutting-Edge Approach one patient • one genome • one vaccine
myvac® | Taking the Treatment of Each Patient’s Tumor to a New Level by Clickcapitalizing onstyle to edit Master title multiple cutting-edge technologies Demonstrated capability of MVA to induce antigen specific immune response – well-established safety profile 2 ongoing clinical trials TG4050: Patient specific neoantigens 1st candidate based on are highly immunogenic – the myvac® platform different from self and specific to each patient Transgene has Click here in-house expertise (VacDesignR™) to optimize insertion of NEC covers 50% Improved genetic engineering neoantigens design for the myvac® MVA in the myvac® MVA backbone of the development vector cost of TG4050 NEC’s AI uses multiple biological and physico- chemical parameters to identify most immunogenic neoantigens* *Source: Mallone et al., “Performance of neoantigen prediction for the design of TG4050, a patient specific neoantigen cancer vaccine”, AACR, 7 June 2020, Poster presentation
Producing TG4050, First Clinical Batches of the Individualized Immunotherapy Already Released Click to edit Master title style GMP facility Manufacturing process Current lead-time in place in place and being from tumor biopsy to tailored progressively vaccine shipment in line with automated objectives 8
TG4050 | First Individualized Vaccine Based on the myvac® Technology 2Click ongoing clinical to edit Master trials title style Moderately mutated myvac® tumors MVA Ovarian and Head Established safety & Neck cancers and Limited efficacy of immunogenicity checkpoint blockers DESIGNED TG4050 (low/medium TMB*) TO TREAT PATIENTS INDIVIDUALIZED CANCER WITH VACCINE ESTABLISHED Selected Patients in clinical remission DISEASE patients with undetectable residual neoantigens disease Highly immunogenic Allows the use of TG4050 Optimized gene editing technologies as monotherapy 9 *TMB: tumor mutation burden
TG4050 | Ovarian Cancer Trial after Surgery and Adjuvant Chemotherapy Phase I trial Click to edit in title Master 13style patients (NCT03839524) First patient Surgery Asymptomatic relapse enrolled in January 2020 Adjuvant Clinical remission TG4050 (single agent) treatment Platinum chemotherapy | TG4050 production Complete response ANALYSES INCLUDE LEAD INVESTIGATOR: Matthew S. Block, MD, PhD, Mayo Clinic (Rochester) characterization of T-cell immune response change in tumor micro-environment clinical outcome First clinical data in 4Q 2021 10
TG4050 | HPV-Negative Head and Neck Cancer Trial after Surgery and Adjuvant Therapy Randomized Click to edit MasterPhase I trial in 30 patients (NCT04183166) title style Arm First patient Surgery Complete A Recurrence response TG4050 enrolled in single agent Adjuvant Chemo/radio therapy TG4050 + SOC January 2020 | TG4050 production (incl. checkpoint blockers) Patient monitoring Arm Recurrence B ANALYSES INCLUDE LEAD INVESTIGATOR: Pr. Christian Ottensmeier, Clatterbridge cancer care center, Liverpool characterization of T-cell immune response change in tumor micro-environment clinical outcome First clinical data in 4Q 2021 11
TG4050 | Next Milestones Ongoing Click to edit trials – Could Master title style treat patients with an established disease Our strategy is to: Clinical program backed by extensive genomic First clinical and immunologic translational research data from Demonstrate vaccine activity at biological and clinical project in collaboration with academic and private ongoing trials stages in patients with minimal disease (allowing the top-level players (Institut Curie, HalioDx, expected use of vaccine in monotherapy) BostonGene, Mayo Clinic, University of Liverpool). The programs aims at: 4Q 2021 Characterize vaccine biology and mechanism Will serve as comprehensively and validate our design Accelerating future clinical development basis for Potentially identifying particular subpopulation partnering Based on vaccine biology, determine the most relevant with a differentiated response discussions clinical positioning including potential combination and target populations TG4050 monotherapy has potential to expand to other solid tumors in patients with minimal residual disease 12
TG4001 Potential to Transform the Treatment of Anogenital HPV Positive Solid Tumors Interim analysis expected around the end of 2022
TG4001 | Virus Powered Candidate Vaccine Click to edit Master title style The right indication The right virus anogenital MVA HPV16-positive cancers Click here OPTIMIZED TREATMENT FOR HPV-POSITIVE TUMORS The right The right HPV antigens patient population E6 and E7 Patients without liver metastasis 14
TG4001 | Phase Ib/II Data of TG4001 with Avelumab Presented at SITC 2020 Promising results, Click to edit Master particularly in patients without liver metastasis (NCT03260023) title style Collaboration 34 heavily pretreated patients with with metastatic HPV16+ cancer (oropharyngeal, anogenital) Identified target population: Compares patients without favorably to liver metastasis (n=23) ICIs in monotherapy 34.8% vs patients with liver metastasis (n=11) 5.6 and vs 0% MONTHS competitive vs 1.4 month landscape Source: Le Tourneau et al. “TG4001 (Tipapkinogene sovacivec) and avelumab for 1 COMPLETE RESPONSE Patient with anal cancer and peritoneal 7 PARTIAL RESPONSES recurrent/metastatic (R/M) Human Papilloma Virus (HPV)- 16+ cancers: clinical efficacy and immunogenicity.” 2020 SITC Annual Meeting, 9-11 extension that all disappeared – still November 2020, Poster followed in the trial presentation 15 ORR: objective response rate (RECIST 1.1); mPFS: median progression-free survival
Expanded Trial Focuses on Patient Population that Derived Improved Clinical Benefit in Phase Ib/II Click to edit Master title style Patients with HPV16-positive anogenital cancer including cervical, vulvar, vaginal, penile and anal cancers With recurrent/metastatic disease Treated in first line or in second line (with a maximum of one prior systemic chemotherapy versus two allowed in Phase Ib/II trial) Without previous exposure to cancer immunotherapy Without liver metastasis at baseline Including all levels of PD-L1 expression 16
TG4001 | Randomized Controlled Phase II Trial Supported by Clinicians Trial to enroll up to ~ 140 patients (NCT03260023) Randomized (1:1) Arm A Patients with TG4001 + avelumab Patients with HPV16+ Anogenital Cancer recurrent/metastatic disease Avelumab single agent Arm B PRIMARY ENDPOINTS SECONDARY ENDPOINTS Interim analysis data expected Overall Response Rate around the end of 2022 Progression-Free Survival (RECIST 1.1) Disease Control Rate (~50 patients enrolled) Overall Survival Other immunological parameters Collaboration with 17
A Methodologically Sound Phase II Trial to Further Validate the Potential of TG4001 Click to edit Master title style First patient enrolled in June 2021 Interim analysis data expected around the Trial received regulatory clearance end of 2022 in the US, France and Spain Positive interim analysis data to be leveraged: to discuss best way forward to registration with health authorities for partnering opportunities TG4001 has potential to address all HPV positive cancers 18
Our Unique Invir.IO™ Platform Rapidly Generating Multiple Virus-Powered Off-the-Shelf Drug Candidates
Invir.IO™ Patented Virus Backbone Based on Vaccinia Virus Copenhagen Strain KeytotoeditTransformative Click Master title style therapies Tumor-specific replication Safe in a Targeted and Broad spectrum infectivity Accentuated with TK-RR- double deletion large variety Continuous Can infect all types of tumor cells Cytoplasm-restricted viral replication of routes, Delivery Potent Large and stable genome No risk of integration into host DNA including IV Payloads High payload potential Good tolerance in IV demonstrated from ongoing TG6002 trials Low-grade adverse events Proof of Concept of the functionality of the intravenous administration in human Short time to clinic from product In-house Multiple mode of action design to clinic (i.e. 18-24 mo) GMP Tumor · Oncolysis manufacturing Eradication · Immune mechanisms including mets · Therapeutic payloads Abscopal activity demonstrated in preclinical models for BT-001 Ongoing collaboration 20
TG6002 | Chemotherapy Produced Directly in the Tumor Interim Click to editPhase I data Master title style (IV*) presented at AACR 2021 The right virus PoC clinical data for IV + payload administration 2 ongoing Phase I/II trials evaluating IV* and Oncolytic armed with FCU1 gene, IHA** administration prodrug activator After IV infusion, TG6002 was detected in the Converts 5-FC into 5-FU, a potent tumor and induced the production of 5-FU – chemotherapy agent no major SAE (Phase I interim results) First IV trial clinical data presented at AACR 2021 (April 2021) The right indication The right 5-FU sensitive cancers patient population Colorectal cancer with liver metastases Current SoC in 2L: bevacizumab + folfiri/folfox (3L: regorafenib, TAS-102) OS: ~13 months 2L: 180,000 pts/year – EU 28 & US 21 * IV: intravenous administration **IHA: intrahepatic artery administration
TG6002 | Interim Phase I Data Presented at AACR 2021 Clinical PoC Click to edit of title Master feasibility of IV route for our patented VVcop TK-RR- virus thestyle TG6002 replicates in tumor 5-FU is expressed in tumor Long-lasting expression tissue without sign of tissue in most of the of 5-FU widespread replication evaluable patients (3 cohorts) 5-FU (•) and 5-FC (•) quantification Fraction of tumor tissue positive for Correlation between plasma in plasma (1·109 pfu dose cohort) TG6002 by qPCR or plaque assay* and tumor 5-FU at day 5 10000 TG6002 infusion 5-FC administration 60 1/2 Plasma 5-FU (ng/ml) 1000 3/8 positive tumors 1/3 % of TG6002 40 100 Patient with direct 20 10 evidence of TG6002 in tumor are red dots ( ) 0 1 3108 pfu 1109 pfu 3109 pfu 1 10 100 1000 10000 Dose cohorts Tumor 5-FU (pg/mg) * Sensitivity of qPCR of plaque assay is impacted by scarcity of viable cells in Days tumor biopsies Source: Bendjama et al. “Oncolytic virus TG6002 locates to tumors after intravenous infusion and induces tumor-specific expression of a functional pro-drug activating enzyme in patients with advanced 22 gastrointestinal carcinomas” 2021 AACR Annual Meeting, April 9-14, 2021, Poster presentation
BT-001 | Oncolytic Virus Encoding for an Anti-CTLA4 Antibody (Ab) Click to edit Master title style Transgene’s patented BioInvent’s potent Invir.IO™ backbone anti-CTLA4 Ab · Oncolysis BT-001 is designed to achieve: · Activates and increases T-effector cells · Anti-tumor immune induction · Treg depleting activity · Safe delivery of payload Strong and sustained anti-tumor Selected activity publications: Kleinpeter et al., 2016 Better safety vs anti-CTLA4 IV Immune change in tumor Vargas F. et al., 2018 microenvironment Can be developed for multiple cancer GM-CSF Marchand et al., 2018 cytokine indications Stimulates immune cells (incl. APC) Semmrich et al., 2020 collaboration 23 50/50 with BioInvent
BT-001 | Phase I/II Trial Starting in Europe Leverage the IT* Click to edit Master title route style to accelerate development with anti-PD1 (NCT04725331) Patients with metastatic or Repeated and advanced ascending doses injectable solid Trial authorized of BT-001 IT* tumors such as: in Europe and in the US soft tissue sarcoma, First patient enrolled in Feb. 2021 Merkel cell carcinoma, melanoma, triple neg breast cancer, non-small cell lung cancer First Phase I data to be presented in 1H 2022 (safety and translational data) Repeated doses Repeated doses of BT-001 IT + of BT-001 IT + pembrolizumab IV** pembrolizumab IV** 24 *IT: intratumoral administration **IV: intravenous administration
Invir.IO™ Pipeline Will Allow us to Generate Significant Value Next Click tocandidates edit Master titleare stylealready in preclinical development Patented Potential to Optimize backbone generate multiple Invir.IO™ value Highly productive creation demonstrated: novel platform via a combination immunotherapies Several candidates of early out- with multiple modes in preclinical Ability to safely be licensing and of action against development administered IV in-house clinical established or novel development Express its payload targets until POC in the tumor, including with IV administration 25
Outlook 26
Company Funded to Deliver Multiple Value Generating Milestones €19.1 million in cash and cash equivalents at March 31, 2021 Ownership As of June 24, 2021 €34.1 million raised in June 2021 through a private placement In addition, Transgene holds: 62% Tasly BioPharmaceuticals shares valued at €32.3 million Free float 38% at the end of December 2020 • Listed on Euronext Paris FINANCIAL VISIBILITY until 4Q 2023 • ISIN: FR0005175080 - Ticker: TNG 27
Our Vision and Environmental, Social and Governance Policy Maintain Company’s Click to edit Master title style Sustainability by Creating Value, Strengthening Social Contribution and Minimizing Environmental Impact Transgene’s ESG strategy is 16 interns based on six commitments 1,883 h 85% permanent 4 PhD students dedicated to work contract 11 apprentices to patients occupational training to our partners to our employees to our shareholders and investors 100% to society and territories 91/100 of employee evaluations include ESG criterion Professional to the planet Equality Index Gaïa EthiFinance: 63/100 (+9 pts) Our ESG policy is detailed in the Universal Registration URD Vigeo Eiris: 44/100 (+20 pts) Document 2020, chapter 4. 2020 28 ➔ Above industry benchmark
2021-2022 Milestones AClick to editLeader World Master title style in Virus-Powered Immunotherapies against Solid Tumors TG4001 MVA personalised neo-antigen HPV-positive cancers therapeutic VVcopTK-RR- multi-armed oncolytic therapeutic cancer vaccines vaccine viruses TG4050 TG4001 TG6002 Phase I data (IHA) | 2H 2021 First data from two on-going clinical Interim analysis data | around the trials - ovarian and head and neck end of 2022 BT-001 Initial Phase I data | 1H 2022 cancer | 4Q 2021 AstraZeneca Potential option exercise TARGET: sign licensing agreements based on upcoming trial results 29
Investment Highlights Click to edit Master title style Unique virus A world leader Clinical-stage powered World-class in virus powered immunotherapy technologies scientific and clinical immunotherapies company to specifically target collaborations cancer cells myvac® and Biological and Invir.IO™: best- Multiple key Potentially clinical evidence in-class platforms milestones of anti-tumor potential to expected in 2021 game efficacy generate multiple and 2022 changer candidates of the treatment of solid tumors 30
Thank you for your attention 31
Appendices 32
TG4050 Process for Individualized Neoantigen Vaccination Combines bioengineering Click to edit Master title style and digital transformation ROUTINE DATA PROCESSING, GENE EDITING, TUMOR BIOPSY GENE SEQUENCING ARTIFICIAL INTELLIGENCE MANUFACTURING Patient Next Selection of Vaccine Treatment generation 30 neoantigens generation and administration sequencing manufacturing Database Epitope Scoring NEC’S NEOANTIGEN PREDICTION Sequencing data HLA Binding Epitope Ranking WXS Proprietary Database Normal Tumor presentation RNA Immunogenicity Candidate Generation Overall Ranking Vaccine HLA Typing Self-Similarity by recipe WXS Graph-based Tumor RNA Expression relational learning Variant Calling RNA 33
TG4001 | Treatment Induced Long-Lasting Responses and Changes in Clickthe Tumor to edit Master titleMicro-Environment style Evolution of tumor size in patients without liver metastases TG4001 elicits strong, long-lasting and specific T-cell response against HPV16 E6 and E7 Treatment shifts « cold » tumor into « hot » tumor Increased CD3+ and CD8+ infiltrate Higher PD-L1 expression Expression of several genes associated with activation of the immune system Source: Le Tourneau et al. “TG4001 (Tipapkinogene sovacivec) and avelumab for recurrent/metastatic (R/M) Human Papilloma Virus (HPV)- 16+ cancers: clinical efficacy and immunogenicity.” 2020 SITC Annual Meeting, 9-11 November 2020, Poster presentation 34
Significant Opportunity for TG4001 in Anogenital HPV16-Positive Cancers HPV16 etiology Click to edit creates Master title style a significant market opportunity Incidence of anogenital HPV16 positive cancers w/o liver metastases Newly diagnosed patients with metastatic disease and patients with recurrent disease Clinical outcome Vulval Cervix 8% 50% needs to be improved ~ 25,000 new patients per year Vaginal Current treatments, mostly radio/chemotherapy, 15% do not address the etiology (viral origin) of the disease Penile No IO drugs (ICIs) approved yet in 1L of treatment 2% Anal Pembrolizumab approved in 2L cervix cancer (USA) 25% 65% 35% EU27 + UK USA Estimated cancer cases (2025) based on: 1. ICO/IARC – HPV Information Center> Prevention at a glance // 2. HPV-positive cervical cancer: Globocan/IARC 2020 Cancer Fact Sheets: cervix uteri (C53); ICO/IARC – HPV Information Center Statistics // 3. HPV- positive vaginal cancer: Globocan/IARC 2020 Cancer Fact Sheets: vagina (C52); ICO/IARC – HPV Information Center Statistics // 4. HPV-positive vulvar cancer: Globocan/IARC 2020 Cancer Fact Sheets: vulva (C51); ICO/IARC – HPV Information Center Statistics; CDC United States Cancer Statistics: Data Visualizations; SEER Cancer stat facts: vulvar cancer // 5. HPV-positive anal cancer: Globocan/IARC 2020 Cancer Fact Sheets: anus (C21); ICO/IARC – HPV Information Center Statistics; CDC>Cancer Home>HPV and Cancer>Statistics>Rates by Race and Ethnicity>HPV-Associated Anal Cancer Rates by Race and Ethnicity; American Cancer Society: Anal Cancer // 6. HPV-positive penile cancer: Globocan/IARC 2020 Cancer Fact Sheets: penis (C60); ICO/IARC – HPV Information 35 Center Statistics; CDC>Cancer Home>HPV and Cancer>Statistics>Rates by Race and Ethnicity>HPV-Associated Cancers Rates by Race and Ethnicity
Multiple Payloads | Deliver Significant Patient Benefits Local Click to payload edit Master delivery title style helps better neutralize the tumor in an effective and safe manner by limiting systemic exposure Targeted insertion of recombinant payload at selected loci in the Vaccinia genome Several IMMUNE MODULATORS PRODRUG payloads can be ACTIVATORS encoded in one ICIs (e.g. PD-1/PD-L1, multi-armed OV CTLA4, TIM-3, …) e.g. Fcu1 (TG6002), an (several loci, up to 20- Monoclonal antibodies enzyme that locally 25 kb capacity) or fragments converts 5-FC into 5-FU, (scFV, Fab, …) a chemotherapeutic agent Enzymes controlling Multiple immunosuppressive payload metabolites (e.g. ADA) sourcing IMMUNE BOOSTERS approaches Cytokine (e.g. GM-CSF, interleukins, … ) Agonistic ligands (e.g. CD40L, Flt3L, …) Growth Factors (e.g. VEGF) 36
Ongoing Collaboration with AstraZeneca (AZ) Invir.IO™ platform Click to edit Master validation title style AstraZeneca 5 novel secured an therapeutic Of 5 novel oncolytic payloads to be immunotherapies, Possible option access to integrated in our 2 have been exercise by AZ Transgene’s VVCOPTK-RR- on each candidate Invir.IO™ delivered to AZ proprietary platform backbone Looking to augment To continue in-house expertise development in OVs in the clinic Transgene in charge of GMP manufacturing Could generate additional revenues for Transgene of clinical batches and further validate Invir.IO™ in the clinic 37
TG6002 | Two Phase I/IIa trials in 5-FU sensitive GI indications Two Click tonovel administration edit Master title style routes - IV and IHA Gastro-intestinal adenocarcinoma with liver Colorectal cancer patients with unresectable metastasis (colon cancer) - TG6002 IV + oral 5-FC liver metastases (CRLM) – TG6002 IHA + oral 5-FC Interim data Phase I (dose escalation) demonstrate 5-FU Phase I (dose escalation) up to 40 patients production in the up to 30 patients tumor - no major SAE PoC data presented Phase IIa part (efficacy) at AACR 2021 Phase IIa part (efficacy) 35 patients 38 patients PRINCIPAL INVESTIGATOR: Prof Philippe Cassier, PRINCIPAL INVESTIGATOR: Dr. Adel Samson, centre Léon Bérard (Lyon, France) St. James’ University Hospital (Leeds, UK) INDs granted in Belgium, Spain, France IND granted in the UK, France 38
BT-001 | Exciting Preclinical Data Click to edit Master title style Strong abscopal effect (impact on distant lesions) i.t. injection CT26 Semmrich et al., BT-001, an oncolytic vaccinia virus armed with a Treg-depleting human recombinant anti-CTLA4 antibody and GM-CSF to target the tumor microenvironment, SITC, Nov. 2020 39 39
C O N TA C T Lucie Larguier Director Investor Relations and Corporate Communication +33 6 7624 7227 larguier@transgene.fr 400 Boulevard Gonthier d’Andernach | Parc d’Innovation | CS80166 67405 Illkirch Graffenstaden Cedex | France Tél.: + 33 (0)3 88 27 91 21 | www.transgene.fr
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