SQZ Biotechnologies Company, a clinical-stage biotechnology company, develops transformative cell therapies for patients with cancer, infectious diseases, and other serious conditions. The company's lead product candidate, SQZ-PBMC-HPV, from its SQZ Antigen Presenting Cells platform, which is in a Phase I clinical trial as a monotherapy and in combination with other immuno-oncology agents for the treatment of HPV16+ advanced or metastatic solid tumors, including cervical, head-and-neck, anal, penile, vulvar, and vaginal cancer. Its additional platforms in development are SQZ Activating Antigen Carriers; and SQZ Tolerizing Antigen Carriers. The company was incorporated in 2013 and is headquartered in Watertown, Massachusetts.