Vaccinex Reports First Quarter 2024 Financial Results and Provides Corporate Update

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Vaccinex, Inc.
Vaccinex, Inc.

Last patient last visit in randomized, double-blind, SIGNAL-AD Phase 2a study of pepinemab treatment for Alzheimer’s Disease is scheduled for early June 2024

ROCHESTER, N.Y., May 15, 2024 (GLOBE NEWSWIRE) -- Vaccinex, Inc. (Nasdaq: VCNX), a clinical-stage biotechnology company pioneering a differentiated approach to treating neurodegenerative disease and cancer through the inhibition of Semaphorin 4D (SEMA4D), today announced financial results for the first quarter ended March 31, 2024, and provided a corporate update on its key program for Alzheimer’s disease.

Treatment with pepinemab believed to halt or slow progression of neurodegenerative disease:

Vaccinex expects to complete the planned 12-months of treatment of the last patients enrolled in its randomized, double-blind, Phase 2a SIGNAL-AD trial of pepinemab anti-SEMA4D antibody for mild Alzheimer’s disease (NCT04381468) in early June 2024. Database lock will follow by early July to enable final analysis of the major study outcomes.

Of interest to investors:

  • Vaccinex’s lead product, pepinemab, is designed to block astrocyte activation that is otherwise triggered by SEMA4D upregulation on stressed or damaged neurons in the brain during progression of Alzheimer’s Disease (AD) and Huntington’s Disease (HD).

  • Astrocytes, which are key brain cells that support the health and function of neurons, express high affinity receptors for SEMA4D and undergo substantial changes in morphology and gene expression when SEMA4D binds to these receptors. As a result, they switch from normal supportive functions to neurotoxic inflammatory activity that is believed to accelerate and aggravate progression of neurodegenerative diseases.

  • The Company’s hypothesis, which is being tested in the SIGNAL-AD study, is that treating with pepinemab antibody can block signaling by SEMA4D and prevent some or all damaging consequences of astrocyte activation.

  • The Company has previously reported that antibody blockade of SEMA4D appears to protect and restore healthy astrocyte functions and, by some measures, also appears to slow or prevent cognitive decline in Huntington’s disease.

  • The Company believes that the prevalence of AD (6 million people diagnosed with AD in the US alone) and current concerns about the limitations of treatment with anti-Aβ amyloid antibodies could make pepinemab, if approved, attractive as a potential alternative treatment or possibly for use in combination with anti-Aβ to enhance the benefit to patients. Pepinemab has, to date, been well-tolerated in clinical trials that enrolled a total of more than 600 patients, with no evidence of amyloid-related imaging abnormalities (ARIA).