GeoVax Labs, Inc. announced that it will be represented during two upcoming scientific meetings, including Vaccines Summit Boston 2023 in Boston, MA, May 22-24, 2023 and CYTO 2023 in Montréal, Québec, Canada, May 20-24, 2023. Vaccines Summit Presentation: May 22, 2023, 3:00 pm -3:30 pm ET, Session Talks – II. On May 22, Don Diamond, Ph.D., Professor, Department of Hematology & Hematopoietic Cell Transplantation, City of Hope, will deliver a presentation titled, “Assessment of GEO-CM04S1 for Prevention of COVID-19 in Immunocompromised Cell Therapy Patients; An Open-Label Safety Study.”Dr. Diamond's presentation will include a description of the development and clinical testing of GeoVax's vaccine candidate, GEO-CM04S1.

CM04S1 is a next-generation COVID-19 vaccine based on the use of the MVA viral vector platform, which presents multiple antigens to the immune system to induce both antibody and T cell responses. The vaccine is designed to provide durable protection against new and continually emerging variants of COVID-19, limiting the need for frequent modification and updating. GeoVax is focusing on the clinical development of this vaccine for use in patients with impaired ability to mount adequate protective immune responses to currently available COVID-19 vaccines, to include those with certain malignancies and autoimmune disorders, cell and organ transplant patients, individuals with end-stage kidney disease receiving hemodialysis, and potentially elderly individuals who respond poorly to other vaccines.

These individuals may not be able to raise or maintain protective antibody responses following receipt of first-generation mRNA vaccines, contributing to reduced vaccine efficacy. Dr. Diamond's presentation will include new and unpublished data from the open-label portion of the Phase 2 trial in patients undergoing hematological cancer treatment. CYTO Poster Presentation: May 23, 2023, 5:30 pm – 6:00 pm ET, Exhibit Hall 210 On May 23, Sandra Ortega-Francisco, Ph.D., Department of Hematology and Hematopoietic Cell Transplantation and Hematologic Malignancies Research Institute, City of Hope, will participate in a poster presentation titled, “Induction of multi-antigen specific T cell responses by a synthetic MVA-SARS-CoV-2 vaccine in patients with hematological malignancies.” Similar to the Vaccines Summit presentation by Dr. Diamond, Dr. Ortega-Francisco's poster presentation will also address preliminary data from the ongoing Phase 2 study of CM04S1 in patients with hematologic malignancies who are at a heightened risk of severe COVID-19.

CM04S1 is a next-generation COVID-19 vaccine based on GeoVax's MVA viral vector platform, which supports the presentation of multiple vaccine antigens to the immune system in a single dose. CM04S1 presents both the spike and nucleocapsid antigens of SARS-CoV-2 and is specifically designed to induce both antibody and T cell responses to non-variable parts of the virus. The more broadly specific and functional engagement of the immune system is designed to provide protection against the new and continually emerging variants of COVID-19.

Based on data from animal models and a completed Phase 1 clinical study, vaccine-induced immune responses were shown to recognize both early and later variants of SARS-CoV-2, including the Omicron variant. Vaccines of this format should not require repeated modification and updating. CM04S1 continues to advance in two Phase 2 clinical studies, one as a primary vaccine for immunocompromised cancer patients, in direct comparison to either the Pfizer or Moderna mRNA vaccine (ClinicalTrials.gov Identifier: NCT04977024), and the second as a booster for healthy patients who have previously received either the Pfizer or Moderna vaccine as their initial inoculation (ClinicalTrials.gov Identifier: NCT04639466).