Priority Review for Keytruda Head/Neck Cancer sBLA
FDA has accepted for priority review a Merck supplemental BLA for Keytruda (pembrolizumab) for treating patients with resectable locally advanced head and neck squamous cell carcinoma (LA-HNSCC) as neoadjuvant treatment. The submission also seeks approval for its continued adjuvant use in combination with standard-of-care radiotherapy with or without cisplatin, and then as a single agent. The agency has set a user fee review action target date of 6/23.
The submission is based on data from the Phase 3 KEYNOTE-689 trial, which showed that in patients with resectable LA-HNSCC, the Keytruda perioperative treatment regimen “demonstrated a statistically significant and clinically meaningful improvement in event-free survival (EFS) compared to adjuvant radiotherapy (with or without cisplatin) alone,” Merck says. The study also showed a statistically significant improvement in the secondary endpoint of major pathological response for patients ion Keytruda compared with adjuvant radiotherapy alone, it adds. The safety profile is said to be consistent with that seen in previously reported studies, and no new safety signals were identified.
Keytruda is currently approved as monotherapy and in combination regimens for certain patients with metastatic or with unresectable, recurrent HNSCC, according to the company.