PIK3CA and urinary bladder neoplasm: Ward et al. studied the mutations of a panel of 23 genes on a cohort of 956 bladder tumors (NMIBC and MIBC) including TERT (promoter), FGFR3, PIK3CA, ERCC2, ERBB2, HRAS, RXRA, KRAS, FBXW7, ERBB3, BRAF and NRAS12.