Migden Migden MR MR PD-1 blockade with cemiplimab in advanced cutaneous squamous-cell carcinoma PD-1 blockade with cemiplimab in advanced cutaneous squamous-cell carcinoma N Engl J Med N Engl J Med 2018 2018 379 379 4 4 341 341 351 351 10.1056/NEJMoa1805131 10.1056/NEJMoa1805131 29863979 29863979. The gene discussed is PDCD1; the disease is cutaneous squamous cell carcinoma.