Epizyme NDA Accepted for Tazemetostat
FDA has accepted for priority review an Epizyme NDA seeking accelerated approval for tazemetostat, indicated for treating metastatic or locally advanced epithelioid sarcoma not eligible for curative surgery. The agency has set a user fee review action target date of 1/23/2020.
The submission is based primarily on data from a 62-patient epithelioid sarcoma cohort of Epizyme’s ongoing Phase 2 study of tazemetostat. Data show that tazemetostat treatment resulted in clinically meaningful and durable responses, and was generally well-tolerated, the company says. “To support full approval of tazemetostat for epithelioid sarcoma, Epizyme will initiate a global confirmatory trial,” it adds. The company says it plans to conduct a 1:1 randomized, controlled clinical trial in the front-line treatment setting comparing tazemetostat in combination with doxorubicin versus placebo plus doxorubicin in approximately 150 patients. The primary efficacy endpoint will be progression-free survival, and secondary efficacy endpoints will include overall survival, disease control rate, overall response rate and duration of response.