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)

Renal Cell Carcinoma Clinical Trial

Official title:

A Multicenter, Open-label, Randomized, Phase 1/2 Study of Belzutifan in Combination With Palbociclib Versus Belzutifan Monotherapy in Participants With Advanced Renal Cell Carcinoma

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT05468697
• Other study ID #: 6482-024
• Secondary ID: MK-6482-024LITES
• Status: Recruiting
• Phase: Phase 1/Phase 2
• Start date: August 10, 2022
• Est. completion date: March 16, 2027

Study information

• Verified date: January 2024
• Source: Merck Sharp & Dohme LLC
• Contact: Toll Free Number
• Phone: 1-888-577-8839
• Email: Trialsites[@]merck.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

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. Part 1 will establish the safety of belzutifan plus palbociclib and determine a recommended dosage of palbociclib for the combination therapy by ascending dose escalation. Part 2 will evaluate the efficacy and safety of belzutifan plus palbociclib at the dosage level determined in Part 1.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 180
• Est. completion date: March 16, 2027
• Est. primary completion date: March 16, 2027
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

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

Related Conditions & MeSH terms

• Carcinoma
• Carcinoma, Renal Cell
• Renal Cell Carcinoma

Intervention

Drug:
• Belzutifan
40 mg tablet administered orally at a dose of 120 mg.
• Palbociclib
75, 100, or 125 mg tablet administered orally according to randomized dose for 21 days consecutive days followed by 7 days off.

Locations

Country	Name	City	State
Australia	Macquarie University-MQ Health Clinical Trials Unit ( Site 2001)	Macquarie University	New South Wales
Israel	Rambam Health Care Campus-Oncology ( Site 3000)	Haifa
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	Georgetown University Medical Center ( Site 1002)	Washington	District of Columbia

Sponsors (1)

Lead Sponsor	Collaborator
Merck Sharp & Dohme LLC

Countries where clinical trial is conducted

United States,  Australia,  Israel, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Part 1 - 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 for Part 1.	Up to approximately 28 days
Primary	Part 1 - 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 for Part 1.	Up to approximately 4.5 years
Primary	Part 1 - 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 for Part 1.	Up to approximately 4.5 years
Primary	Part 2 - Objective Response Rate (ORR) Per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Investigator	ORR is defined as the percentage of participants who have a complete response (CR: Disappearance of all target lesions) or a partial response (PR: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1. The percentage of participants who experience a CR or PR as assessed by the investigator based on RECIST 1.1 will be presented for Part 2.	Up to approximately 4.5 years
Secondary	Part 2 - Clinical Benefit Rate (CBR) Per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Investigator	CBR is defined as the percentage of participants who have a complete response (CR: Disappearance of all target lesions) or a partial response (PR: At least a 30% decrease in the sum of diameters of target lesions) or stable disease (SD: Neither sufficient decrease to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum diameters while on study) for =6 months per RECIST 1.1. The percentage of participants with CBR will be presented for Part 2.	Up to approximately 4.5 years
Secondary	Part 2 - Duration of Response (DOR) Per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Investigator	For participants who demonstrate a confirmed complete response (CR: Disappearance of all target lesions) or confirmed partial response (PR: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1, DOR is defined as the time from first documented evidence of CR or PR until disease progression or death. The DOR as assessed by the investigator will be presented for Part 2.	Up to approximately 4.5 years
Secondary	Part 2 - Progression-Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Investigator	PFS is defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first. Per RECIST 1.1, PD is defined as =20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of =5 mm. The appearance of one or more new lesions is also considered PD. PFS as assessed by the investigator will be presented for Part 2.	Up to approximately 4.5 years
Secondary	Part 2 - Overall Survival (OS)	OS is defined as the time from randomization to death due to any cause. OS will be reported for Part 2.	Up to approximately 4.5 years
Secondary	Part 2 - 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 for Part 2.	Up to approximately 4.5 years
Secondary	Part 2 - 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 for Part 2.	Up to approximately 4.5 years

External Links

•   Merck Clinical Trials Information
•   Plain Language Summary