FDA Approves New Indication for Merck’s Keytruda
FDA has approved Merck’s Keytruda (pembrolizumab) for intravenous injection for first-line treatment of patients with unresectable or metastatic microsatellite instability-high or mismatch repair deficient colorectal cancer. The agency says it is the first immunotherapy approved for this patient population as a first-line treatment that is administered to patients without also giving chemotherapy. Keytruda was previously approved by FDA for treating other types of cancer.
Keytruda reportedly works by targeting the cellular pathway of proteins found on the body’s immune cells and some cancer cells. FDA says that by blocking the pathway, Keytruda may help the body’s immune system fight the cancer cells and provide a benefit for patients with the cancers listed in the indication.
The approval was based on the results of one multicenter, international, open-label, active-controlled trial that compared Keytruda with chemotherapy treatment in 307 patients with the listed colorectal cancers. The study reportedly demonstrated a statistically significant improvement in progression-free survival.
The application received priority review and also used the real-time oncology review program, the assessment aid, and summary level review. FDA says it collaborated with international agency counterparts on the application review under Project Orbis.