Genocea Provides Second Quarter 2021 Corporate Update
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Genocea Provides Second Quarter 2021 Corporate Update

GEN-011 neoantigen-targeted peripheral T cell therapy clinical trial continues

GEN-009 neoantigen vaccine candidate shows promising long-term clinical results

Conference call today at 8:30 a.m. E.T.

CAMBRIDGE, Mass., July 29, 2021 (GLOBE NEWSWIRE) -- Genocea Biosciences, Inc. (Nasdaq: GNCA), a biopharmaceutical company developing next-generation neoantigen immunotherapies, today provided a business update for the second quarter ended June 30, 2021.

“I am pleased with the GEN-011 program progress. We continue to believe that GEN-011 has the potential to represent a major advancement in solid tumor T cell therapies based on the use of optimal T cells and targets. These T cells are derived from easily accessible peripheral blood as opposed to the tumor itself and are activated to pursue the surface-presented neoantigens of anti-tumor CD8+ and CD4+ T cell responses, prioritized by our proprietary ex vivo discovery platform, ATLAS™,” said Chip Clark, Genocea’s President and Chief Executive Officer.

Clinical updates
GEN-011 (investigational neoantigen-targeted peripheral T cell therapy – or NPT)

  • Genocea previously announced dosing of the first patient in its GEN-011 TiTAN™ clinical trial. GEN-011 is a next-generation solid tumor therapy comprised of neoantigen-targeted peripheral T cells (“NPTs”) selectively expanded on neoantigens of anti-tumor CD8+ and CD4+ T cell responses identified by ATLAS. The TiTAN trial is an open-label, multi-center Phase1/2a trial evaluating safety, tolerability, T cell persistence and proliferation and clinical efficacy. Preliminary clinical response data from an initial subset of patients is expected in late Q4 2021 or Q1 2022.

GEN-009 (investigational neoantigen vaccine)

  • At the American Society of Clinical Oncology (“ASCO”) 2021 Annual Meeting in June, the Company presented long-term follow-up clinical and immunogenicity data from its ongoing Phase 1/2a clinical study demonstrating that GEN-009 continues to generate broad immune responses against neoantigens that can lead to sustained clinical responses. In Part B of the clinical trial, of the nine CPI-sensitive patients, the data show four patients experienced novel reduction in tumor volume post-GEN-009 dosing and achieved independent RECIST responses after vaccination, including three partial responses (“PRs”) and one complete response (“CR”). This is an increase from the two PRs and one CR previously reported at the Society for Immunotherapy of Cancer’s (“SITC”) 2020 Annual Meeting. The remaining five CPI-sensitive patients all achieved disease stabilization. Across the CPI-sensitive cohort, the median duration without disease progression after initial GEN-009 vaccination was 15 months. Of the seven CPI-refractory patients, two achieved stable disease after initial GEN-009 vaccination for up to 10 months. Expanded immunogenicity data revealed that vaccine-specific T cell responses were detected ex vivo after the first dose of the vaccine and continued to rise with each subsequent dose. Vaccine-specific T cell responses remained significantly elevated over baseline and post-CPI, pre-vaccine timepoints for at least 6 months, showing persistence of the vaccine response.