Gritstone Oncology, Inc. is an immuno-oncology company that develops tumor-specific cancer immunotherapies to fight multiple cancer types. The Company focuses to identify and deploy therapeutic neo-antigens from individual patients' tumors to develop treatments for lung cancer. It provides Gritstone EDGE, which is a tumor-specific neo-antigen (TSNA) prediction platform that predicts the presence of a patient’s TSNA on tumor cells. It also develops and manufactures a patient-specific therapeutic to direct a robust thymus (T) cell response to those TSNA predicted to be presented on the patient’s tumor. In its GRANITE product candidate each of the viral prime and RNA boost immunizations contain a patient-specific set of predicted TSNA, and the viral prime and RNA boost in its SLATE product candidate series contains a fixed TSNA cassette that is designed for the subset of patients with tumor neoantigens.