All of Transgene’s preclinical and clinical assets progressed in line with expectations in Q1 2022

• TG4050 – New positive preliminary Phase I results presented at AACR 2022; additional clinical data to be presented at ASCO 2022
• BT-001 – Preclinical data presented at AACR 2022. Phase I clinical update to be released in Q2 2022
• Alessandro Riva proposed as new independent Director and non-executive Chairman of the Board, separating the roles of Chairman and Chief Executive Officer
• €46.8 million in cash and cash equivalents as of March 31, 2022 – Confirmed financial visibility until the end of 2023

Strasbourg, France, May 10, 2022, 5:45 p.m. CEST – Transgene (Euronext Paris: TNG), a biotech company that designs and develops virus-based immunotherapies for the treatment of cancer, today announces its business update for the quarter ended March 31, 2022.

Over the first quarter of 2022, all of Transgene’s preclinical and clinical assets progressed in line with expectations. All clinical-stage immunotherapies are slated to deliver data by the end of the year.

Key events of the period and upcoming news flow

TG4050

At the American Association for Cancer Research (AACR) 2022 annual meeting, held in New Orleans, LA, April 8-13, Transgene discussed new preliminary positive data on TG4050, its individualized cancer vaccine. These immunological and clinical data highlight the potential of this highly innovative neoantigen vaccine.

A poster on the progress of the two ongoing Phase I trials of TG4050 has been accepted for presentation at the upcoming American Society of Clinical Oncology (ASCO) annual meeting, taking place in Chicago, IL, June 3-7, 2022. More information will be provided on May 27, 2022, after the release of the abstracts by ASCO.

An article on the two ongoing trials with TG4050 was also published in the Journal for ImmunoTherapy of Cancer [1]. The publication demonstrated that it is possible to develop a patient specific vaccine within a few weeks for patients with a low to moderate tumor mutational burden.

BT-001

Promising preclinical data with BT-001 were presented at AACR 2022 and published in the Journal for ImmunoTherapy of Cancer ^[2] demonstrating the broad and robust antitumor activity of this Invir.IO™ oncolytic virus.

Transgene and BioInvent will provide an update on the progress of the clinical trial of BT-001 in Q2 2022. Initial Phase I results will be presented at a scientific conference in H2 2022. These first results aim to establish the tolerability of BT-001 and to determine the dose and administration schedule for further development.

Invir.IO™ collaboration with PersonGen BioTherapeutics

Transgene announced the launch of a preclinical collaboration with PersonGen BioTherapeutics. This collaboration aims to evaluate the feasibility and efficacy of a combination therapy against solid tumors, combining PersonGen’s CAR-T cell injection with an oncolytic virus from the Invir.IO™ platform.

Governance

Transgene plans to reinforce its corporate governance by separating the roles of Chairman and CEO. Transgene’s Board of Directors has proposed Dr. Alessandro Riva, MD, as the Non-executive Chairman of the Company. If this nomination is accepted at the upcoming General Shareholder Meeting (May 25, 2022), the roles of Chairman and CEO will be separated. With 30 years of experience in the Life Sciences industry, Dr. Riva will be working closely with Transgene’s CEO Hedi Ben Brahim to realize the potential of the Company’s technology platforms and products to benefit cancer patients.

Transgene’s Board of Directors also proposed the appointment of Prof. Jean‑Yves Blay (subject to the authorization of the public authority to which he reports) and Laurence Espinasse as directors.

Steven Bloom joined Transgene as Vice President, Chief Business Officer (CBO). In this position, he has become a member of the executive committee, leading global business development strategy, alliance management and program management. In particular, he is focused on building the profile of Transgene in the US, where he is based, as part of establishing the Company as a world leader in virus-based immunotherapies.

Transgene also announced that the date of the release of the first half 2022 financial results and of the interim report has been advanced to September 7, 2022.

Summary of key ongoing clinical trials and expected milestones

Operating revenue

During the first quarter of 2022, revenue from collaborative and licensing agreements was mainly composed of revenue from the collaboration with AstraZeneca.

As of March 31, 2022, government financing for research expenditures mainly consisted of accrual of 25% of the research tax credit expected for 2022 (€1.7 million in the first quarter of 2022 compared to €1.5 million for the same period in 2021).

Cash, cash equivalents and other financial assets

Cash, cash equivalents and other financial assets stood at €46.8 million as of March 31, 2022, compared to €49.6 million as of December 31, 2021. In the first quarter of 2022, Transgene’s net cash burn was €2.8 million, compared to €7.2 million for the same period in 2021. This decrease is notably linked to the receipt in January 2022 of the $8 million payment from AstraZeneca following the exercise of a first license option in December 2021 for an oncolytic virus developed by Transgene.

The Company holds shares of Tasly BioPharmaceuticals valued at €18.9 million at the end of December 2021.

The Company has a financial visibility through the end of 2023.

^[[1]^] McCann K, von Witzleben A, Thomas J, et al, Targeting the tumor mutanome for personalized vaccination in a TMB low non-small cell lung cancer, Journal for ImmunoTherapy of Cancer 2022;10:e003821. doi: 10.1136/jitc-2021-003821

^[[2]^] Semmrich M, Marchand J, Fend L, et al. Vectorized Treg-depleting αCTLA-4 elicits antigen cross-presentation and CD8⁺ T cell immunity to reject ‘cold’ tumors. Journal for ImmunoTherapy of Cancer 2022;10:e003488. doi: 10.1136/jitc-2021-003488