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)

Phase 2Active Not RecruitingNCT05468697

Merck Sharp & Dohme LLC60 enrolled

Overview

The purpose of this study is to evaluate the efficacy and safety of belzutifan monotherapy and belzutifan plus palbociclib combination therapy in participants with advanced clear-cell renal cell carcinoma (ccRCC) who experienced disease progression on or after receiving prior therapy. The study will establish the safety of belzutifan plus palbociclib and determine a recommended dosage of palbociclib for the combination therapy by ascending dose escalation.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Renal Cell Carcinoma

Interventions

BelzutifanDRUG

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * 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 Exclusion Criteria: * Has hypoxia, requires intermittent supplemental oxygen, or requires chronic supplemental oxygen * Has a known additional malignancy that is progressing or has required active treatment within the past 3 years * Has known central nervous system (CNS) metastases and/or carcinomatous meningitis * 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 * 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

Locations (13)

Georgetown University Medical Center ( Site 1002)

Washington D.C., District of Columbia, United States

University of Chicago Medical Center ( Site 1007)

Chicago, Illinois, United States

Beth Israel Deaconess Medical Center-Cancer Clinical Trials Office ( Site 1001)

Boston, Massachusetts, United States

Huntsman Cancer Institute-HCI Clinical Trials Office ( Site 1004)

Salt Lake City, Utah, United States

Macquarie University-MQ Health Clinical Trials Unit ( Site 2001)

Macquarie University, New South Wales, Australia

Westmead Hospital ( Site 2006)

Westmead, New South Wales, Australia

Frankston Hospital-Oncology and Haematology ( Site 2005)

Frankston, Victoria, Australia

One Clinical Research ( Site 2008)

Nedlands, Western Australia, Australia

Emek Medical Center-oncology ( Site 3003)

Afula, Israel

Rambam Health Care Campus-Oncology ( Site 3000)

Haifa, Israel

...and 3 more locations

Outcomes

Primary Outcomes

Number of Participants Who Experience at Least One Dose-limiting Toxicity (DLT)

A DLT consists of one or more of the following toxicities: Grade (Gr) 3 or 4 hypoxia or dyspnea; Gr 3 or 4 nausea, vomiting, or diarrhea if persistent for \>48 hours despite therapy; Gr 3 or 4 cardiovascular, vascular, or thrombotic events; Nonhematologic AE ≥Gr 3 in severity with exceptions; Gr 3 rash that does not resolve within 2 weeks; Gr 3 nonhematologic toxicity if persisting despite optimal medical treatment; Gr 3 or 4 hematologic toxicities; Gr 3 or 4 febrile neutropenia; Gr 3 or 4 nonhematologic laboratory value; Any aspartate aminotransferase or alanine aminotransferase \>8x the upper limit of normal (ULN) or 5 to 8x ULN persisting for \>2 weeks; \>2 weeks delay in dosing due to intervention-related toxicity; Intervention-related toxicity causing intervention discontinuation in the first 28 days of dosing; Missing \>20% of intervention doses due to drug-related AEs; Gr 5 toxicity. The number of participants who experience at least one DLT will be reported.

Time frame: Up to approximately 28 days

Number of Participants Who Experience at Least One Adverse Event (AE)

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who experience at least one AE will be reported.

Time frame: Up to approximately 4 years

Number of Participants Who Discontinue Study Treatment Due to an AE

An AE is any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product or protocol-specified procedure, whether or not considered related to the medicinal product or protocol-specified procedure. The number of participants who discontinued from the study treatment due to an AE will be reported.

Time frame: Up to approximately 4 years