Epizyme announced positive interim data from the fully enrolled epithelioid sarcoma cohort of its ongoing Phase 2 study of its lead candidate tazemetostat, a potent, selective, orally available EZH2 inhibitor. The data were presented by the study's lead investigator, Mrinal Gounder, M.D., attending physician, Sarcoma Medical Oncology and Early Drug Development Services, Memorial Sloan Kettering Cancer Center, during the European Society for Medical Oncology 2018 Congress in Munich, Germany. Interim data as of August 21, 2018 from the 62 patients enrolled show that tazemetostat treatment demonstrated clinically meaningful activity for patients with epithelioid sarcoma, or ES. Oral, twice daily administration of tazemetostat resulted in durable objective responses and encouraging overall survival in both treatment-naive patients and patients who had been previously treated with an anticancer therapy. In addition, tazemetostat was generally well-tolerated.
