A Phase 2 Study of Belzutifan (PT2977, MK-6482) for the Treatment of Von Hippel Lindau (VHL) Disease-Associated Renal Cell Carcinoma (RCC) (MK-6482-004)
This open-label Phase 2 study will evaluate the efficacy and safety of belzutifan in participants with VHL disease who have at least 1 measurable RCC tumor. Belzutifan will be administered orally and treatment will be continuous. Participants will be evaluated radiologically approximately 12 weeks after initiation of treatment and every 12 weeks thereafter while continuing in the study for a minimum of 3 years and then every 24 weeks or more frequently if clinically indicated. Changes in VHL disease-associated non-RCC tumors will also be evaluated.
Has a diagnosis of von Hippel Lindau disease, based on a germline VHL alteration Has at least 1 measurable solid RCC tumor and no RCC tumor that requires immediate surgical intervention. The diagnosis of RCC can be radiologic (histologic diagnosis not required). Participants may have VHL disease-associated tumors in other organ systems
Exclusion Criteria:
Has received prior treatment with belzutifan or another HIF-2α inhibitor Has had any systemic anti-cancer therapy (includes anti-vascular endothelial growth factor [VEGF] therapy or any systemic investigational anti-cancer agent) Has an immediate need for surgical intervention for tumor treatment Has evidence of metastatic disease on screening imaging
