FDA Updates Keytruda Gastric Cancer Indication
FDA revised 11/7 the existing indication of Merck’s Keytruda (pembrolizumab) with trastuzumab, fluoropyrimidine, and platinum-containing chemotherapy for the first-line treatment of patients with locally advanced unresectable or metastatic HER2-positive gastric or gastroesophageal junction adenocarcinomas. An agency post says the updated indication, which remains approved under accelerated approval regulations, restricts its use to patients whose tumors express PD-L1 as determined by an FDA-approved test.
The agency also approved the Agilent PD-L1 IHC 22C3 pharmDx as a companion diagnostic device to select patients with adenocarcinomas whose tumors express PD-L1.