Given the strong preclinical rationale for targeting angiogenesis in urothelial carcinoma (UC), the evidence supporting co-targeting of VEGFR2 and PDGF, the safety and efficacy of single-agent sunitinib in patients with UC, and preclinical evidence of synergy with the combination of sunitinib and cisplatin, the evaluation of sunitinib in combination with gemcitabine plus cisplatin in previously untreated patients with metastatic UC is warranted.