Merck's sBLA for Keytruda granted priority review by FDA
Merck announced that the U.S. FDA accepted for review the supplemental Biologics License Application for KEYTRUDA, the company's anti-PD-1 therapy, for the treatment of previously treated patients with advanced microsatellite instability-high cancer. The FDA granted Priority Review with a PDUFA, or target action date, of March 8, 2017; the sBLA will be reviewed under the FDA's Accelerated Approval program based on tumor response rate and durability of response. The FDA recently granted Breakthrough Therapy Designation to KEYTRUDA for unresectable or metastatic MSI-H non-colorectal cancer, and previously granted it for the treatment of patients with unresectable or metastatic MSI-H colorectal cancer. The application, which is seeking approval for KEYTRUDA at a fixed dose of 200 mg every three weeks, is based on data from five uncontrolled, open-label, multi-cohort, multi-site phase I/II trials investigating the activity of KEYTRUDA in MSI-H cancer.