Building a Pipeline
of Immunotherapies

Our first product candidate, GRANITE, is a personalized neoantigen-based immunotherapy. It is being evaluated in the Phase 2 portion of a Phase 1/2 clinical study in combination with checkpoint inhibitors for patients with microsatellite stable colorectal cancer (MSS CRC) who have progressed on FOLFOX/FOLFIRI therapy and a second cohort for patients with gastro-esophageal cancer who have progressed on chemotherapy. GRANITE was granted Fast Track designation by the U.S. Food and Drug Administration for the treatment of MSS CRC.

Our second product candidate, SLATE, utilizes the same antigen delivery system as GRANITE but contains a fixed set of neoantigens that are shared across a subset of cancer patients rather than neoantigens unique to an individual patient, providing us with an off-the-shelf alternative to GRANITE. SLATE is being evaluated in the Phase 2 portion of a Phase I/2 clinical study in combination with checkpoint inhibitors for the treatment of non-small cell lung cancer in patients with relevant KRAS mutations who have progressed on prior immunotherapy, and for cancer types where a relevant TP53 mutation exists.

Additionally, we have a program focused on the development of bispecific antibody (BiSAb) therapeutics using highly tumor-specific antigens, including neoantigens, shared between patients with various solid tumors. Our BiSAb program is currently in lead optimization.

For a description of our ongoing clinical studies, please visit An overview of our compassionate use policy can be found here.

Gritstone is also leveraging EDGE™ as a unique antigen discovery platform to define targets for other immunotherapies such as T-cell receptor (TCR) directed cell therapies and bispecific antibody therapies. These additional targets that were identified and validated by EDGE™ enable us to partner with others or develop additional therapeutic approaches to redirect T cells onto tumors using these highly specific targets.

an Impact

We are committed to progressing the field of immunotherapy, with a goal to eradicate cancer by initially developing personalized immunotherapies that focus on the unique and individual nature of a patient’s tumor. Our dynamic team combines novel science with focus on team work, and we are looking for passionate, innovative people to join us.