A Study of Belzutifan (MK-6482) in Combination With Palbociclib Versus Belzutifan Monotherapy in Participants With Advanced Renal Cell Carcinoma (MK-6482-024/LITESPARK-024)

Prior treatment

• Has received prior treatment of belzutifan or palbociclib
• Has received prior radiotherapy ≤2 weeks prior to first dose of study intervention. Participants must have recovered from all radiation-related toxicities and not require corticosteroids
• Has had major surgery ≤3 weeks prior to first dose of study intervention
• Has received colony-stimulating factors (eg, granulocyte colony-stimulating factor \[G-CSF\], granulocyte-macrophage colony-stimulating factor \[GM-CSF\], or recombinant erythropoietin \[EPO\]) ≤28 days prior to the first dose of study intervention

Other illness

• Has a known additional malignancy that is progressing or has required active treatment within the past 3 years
• Has clinically significant cardiac disease
• Has moderate to severe hepatic impairment
• Has a known history of human immunodeficiency virus (HIV) infection
• Has a history of hepatitis B (HBV) or known active hepatitis C (HCV) infection

Other

• Has hypoxia, requires intermittent supplemental oxygen, or requires chronic supplemental oxygen
• Has known central nervous system (CNS) metastases and/or carcinomatous meningitis

• Has a histologically confirmed diagnosis of unresectable Stage IV (per American Joint Committee on Cancer \[AJCC\], 8th Edition) RCC with clear-cell component
• Has had disease progression on or after having received at least 2 systemic treatments for unresectable Stage IV RCC with prior anti-programmed cell death 1 ligand 1 (PD-1/L1) and a vascular endothelial growth factor-tyrosine kinase inhibitor (VEGF-TKI) in sequence or in combination
• Has measurable disease per RECIST 1.1 as assessed by the investigator and verified by blinded independent central review (BICR)
• Has recovered from all AEs due to previous therapies