The FGFR-specific inhibitors NPV-BGJ398, AZD4547 and JNJ-42756493 are under development for treating lung and breast cancers with FGFR1 amplification, gastric cancer with FGFR2 amplification, cholangiocarcinomas with an FGFR2 fusion, and urothelial cancers with FGFR3 alterations28. The gene discussed is FGFR2; the disease is breast cancer.