Adastra Pharmaceuticals is a clinical-stage biopharmaceutical company that develops therapies for the treatment of cancer and other diseases. The company's lead product candidate, zotiraciclib, is a small molecule inhibitor of cyclin-dependent kinases (CDKs) that is being evaluated in clinical trials for the treatment of solid tumors. Adastra Pharmaceuticals was founded in 2014 and is headquartered in Emeryville, CA.