We identified 78 pts treated with ICI for aUC with available genomic profiling results…n univariable analysis there was a trend towards longer OS in pts with TERTp mutations (HR 0.53, 95% CI 0.27-1.06, p = 0.07), and shorter OS in pts with CDKN2B mutations (HR 1.91, 95% CI 0.98-3.73, p = 0.06)....The presence of a TERTp mutation was an independent predictor of improved OS in a cohort of aUC pts treated with ICI.