Mixed Results for Adjuvant Immunotherapy in High-Risk Cutaneous Squamous Cell Carcinoma
- The phase 3 KEYNOTE-630 trial found that adjuvant pembrolizumab did not significantly improve progression-free survival in patients with high-risk cutaneous squamous cell carcinoma following surgery and radiation.
- Despite missing its primary endpoint, pembrolizumab demonstrated a 50% reduction in cancer recurrence rates, with locoregional recurrence occurring in 13.8% versus 25.3% of placebo patients.
- The competing phase 3 C-POST trial showed cemiplimab reduced the risk of recurrence or death by 68% compared to placebo, with FDA approval expected for this indication.
- Treatment paradigms are shifting toward neoadjuvant immunotherapy approaches, with upcoming trials exploring response-adapted surgery and radiation strategies.
Merck Sharp & Dohme LLC
Posted 4/1/2019
Regeneron Pharmaceuticals
Posted 6/4/2019
National Cancer Institute (NCI)
Posted 9/8/2015
Regeneron Pharmaceuticals
Posted 4/7/2016
SWOG Cancer Research Network
Posted 1/6/2021
Regeneron Pharmaceuticals
Posted 2/2/2015