Vaccinex, Inc., a clinical-stage biotechnology company, engages in the discovery and development of targeted biotherapeutics to treat cancer, neurodegenerative diseases, and autoimmune disorders. The company's lead drug candidate is pepinemab, a humanized monoclonal antibody that binds and blocks the activity of SEMA4D. It is developing Pepinemab, which is in phase 2 clinical for the treatment of Alzheimer's disease and has completed phase 2 study for the treatment of Huntington's disease; Pepinemab in combination with Pembrolizumab in phase 2 study for head and neck cancer; Pepinemab in combination with Avelumab in phase 2 study for pancreatic cancer, and completed phase 2 clinical trial with Avelumab for non-small cell lung cancer; and Pepinemab in combination with Nivolumab and/or Ipilimumab which is in phase 2 clinical trial for melanoma; Pepinemab in combination with Trastuzumab and dendritic cell vaccines in phase 2 clinical trial for breast cancer. The company has also developed ActivMAb, a human antibody discovery platform based on a novel method for expressing and presenting complex multipass membrane proteins, as well as full-length human monoclonal antibodies on the surface of mammalian pox viruses. In addition, it develops CHS-114 and anti-CCR8 antibody; and VX5, which is in preclinical development to treat related to autoimmune disorders.It has collaborations with Merck Sharp & Dohme; Ares Trading S.A.; Emory University; Huntington Study Group; Catalent Pharma Solutions, LLC; and Surface Oncology, Inc. The company was incorporated in 2001 and is headquartered in Rochester, New York.