CHMP recommends approval of Keytruda plus Herceptin in HER2-positive gastric or gastroesophageal junction adenocarcinoma
Merck Inc announced that the European Medicines Agency’s Committee for Medicinal Products for Human Use (CHMP) adopted a positive opinion recommending approval of Keytruda (pembrolizumab), Merck’s anti-PD-1 therapy, in combination with trastuzumab, fluoropyrimidine- and platinum-containing chemotherapy, for the first-line treatment of locally advanced unresectable or metastatic human epidermal growth factor receptor 2 (HER2)-positive gastric or gastroesophageal junction (GEJ) adenocarcinoma in adults whose tumors express PD-L1 (Combined Positive Score [CPS] of at least 1)
The recommendation is based on interim results from the Phase III KEYNOTE-811 trial, in which the Keytruda regimen demonstrated a statistically significant improvement in progression-free survival (PFS) and objective response rate (ORR) compared to trastuzumab and chemotherapy alone in patients whose tumors expressed PD-L1 (CPS of at least 1). In the study, more than 80% of patients had tumors that were PD-L1 positive. These PFS results will be presented at an upcoming medical meeting.
The CHMP’s recommendation will now be reviewed by the European Commission for marketing authorization in the European Union, and a final decision is expected in the third quarter of 2023.