“…These small molecule inhibitors, including BGJ398 (Novartis), TKI258/CHIR258 (Dovitinib, Novartis) (12-14), AZD4547 (Astra Zeneca) PD173074 (Pfizer, Groton, CT), and BMS-582664 (Brivanib, Bristol Myers Squibb) (15), generally target all members of the FGFR family, VEGFR2 and other tyrosine kinases (11, 12). This general FGF and VEGF pathway inhibition is associated with significant diarrhea, nausea, fatigue (16, 17), dyspnea (18), and abdominal pain (16-18), as well as thrombocytopenia and thromboembolic events (16). Hyperphosphatemia-mediated soft tissue calcification has been a further hurdle impeding preclinical development of pan-FGFR inhibitors (11).…”