...gastric FGFR2-amplified SNU-16 and endometrial FGFR2-N549K-mutated AN3CA mouse xenograft models, respectively, by measuring relative tumor volume (RTV). In xenograft models, vs monotherapy, a significant reduction (P<0.01) in RTV occurred with futibatinib plus S-1, paclitaxel (Table), or cisplatin and a numerically greater reduction with futibatinib plus gemcitabine.