Merck & Co., Inc. posted two Phase III trial failures – one of the PD-1 inhibitor Keytruda in unresected locally advanced head and neck squamous cell carcinoma (HNSCC) and another of the PARP inhibitor Lynparza (olaparib) in colorectal cancer (CRC) – back to back. However, while the news marks a setback for Merck’s oncology development program, Keytruda has a label for HNSCC and is in development for further settings of the disease that leave additional opportunities open, while Lynparza faces little in the way of serious competition in CRC.
Merck made the announcement for the Phase III LYNK-003 trial, testing the PARP inhibitor with or without Roche Holding...