FGFR1 and urinary bladder cancer: Of the 94 enrolled patients initially, partial responses were seen in 4 FGFR3 mutated bladder cancers, 2 FGFR1 amplified SqCLC, and a reduction in tumor burden was seen in FGFR2 fusion cholangiocarcinoma as well as in FGFR1 amplified breast cancer [92].