Cercek Cercek A A Lumish Lumish M M Sinopoli Sinopoli J J PD-1 Blockade in Mismatch Repair-Deficient, Locally Advanced Rectal Cancer PD-1 Blockade in Mismatch Repair-Deficient, Locally Advanced Rectal Cancer N Engl J Med N Engl J Med 2022 2022 386 386 2363 2363 2376 2376 10.1056/NEJMoa2201445 10.1056/NEJMoa2201445 supplied-pmid 35660797? Here, PDCD1 is linked to rectal cancer.