19/09/2025 Merck & Co/MSD received positive EU CHMP Opinions for perioperative pembrolizumab regimen in SCCHN, and for subcutaneous administration (Ref) The EMA's CHMP adopted a positive opinion recommending the approval of Merck & Co./MSD's pembro (anti-PD-1) mono as a neoadjuvant Tx followed by adjuvant pembro + RT ± cisplatin after surgery, then pembro mono for resectable locally advanced SCCHN with PD-L1 CPS ≥1. The recommendation is based on results from the Ph3 KEYNOTE