NYU Langone Health Apr 22 2026 A drug that helps the immune system find cancer cells also helps patients avoid having their bladders surgically removed (cystectomy), a new study shows. The findings apply to serious cases after tumors have already spread into the bladder's surrounding muscle wall. Led by researchers at NYU Langone Health and its Perlmutter Cancer Center, the phase 2 study showed that adding pembrolizumab, also known as Keytruda, to standard chemotherapy and radiation with