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A Study of MK-6482 in Combination with Lenvatinib Versus Cabozantinib for Treatment in Participants With Advanced Renal Cell Carcinoma (MK-6482-011)

Phase 1
Conditions
Renal cell carcinoma
MedDRA version: 20.0Level: LLTClassification code 10038409Term: Renal cell carcinoma NOSSystem Organ Class: 100000004864
Therapeutic area: Diseases [C] - Cancer [C04]
Registration Number
EUCTR2020-002075-35-FI
Lead Sponsor
Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc
Brief Summary

Not available

Detailed Description

Not available

Recruitment & Eligibility

Status
Authorised-recruitment may be ongoing or finished
Sex
All
Target Recruitment
708
Inclusion Criteria

1. Must have a histologically confirmed diagnosis of unresectable, locally advanced/metastatic RCC with clear cell component (with or without sarcomatoid features) ie, Stage IV RCC per AJCC (8th Edition). Previous nephrectomy or metastasectomy is allowed.
2. Has experienced disease progression on or after an anti-PD-1/L1 therapy as either first- or second-line treatment with for locally advanced/metastatic RCC or as adjuvant treatment with progression on or within 6 months of last dose. The anti-PD-1/L1 therapy may have been monotherapy or in combination with other agent(s) such as anti- CTLA4 or VEGF-targeted-TKI. The immediately preceding line of treatment has to have been an anti-PD-1/L1 therapy.
- Treatment progression is defined by meeting ALL of the following criteria:
o Has received at least 2 doses of an anti-PD-1/L1 mAb.
o Has shown radiographic disease progression during or after an anti-PD-1/L1 mAb as assessed by investigator.
3. Has measurable disease per RECIST 1.1 as assessed by the local site investigator/radiology. Lesions situated in a previously irradiated area are considered measurable if progression has been shown in such lesions.
4. Has a KPS =70% [Karnofsky, D. A., et al 1948] assessed within 10 days before randomization.
5. Has received no more than 2 prior systemic regimens.
6. Has received only 1 prior anti-PD-1/L1 therapy for adjuvant or locally advanced/metastatic RCC.
7. Has recovered from all AEs due to previous therapies to =Grade 1 or baseline. Participants with =Grade 2 neuropathy may be eligible. Participants with endocrine-related AEs Grade =2 requiring treatment or hormone replacement may be eligible.
8. If participants received major surgery or radiation therapy of >30 Gy, they must have recovered from the toxicity and/or complications from the intervention.
9. Is male or female, at least 18 years of age, at the time of signing the informed consent.
10. Male participants are eligible to participate if they agree to the following during the intervention period and for at least 7 days after the last dose of belzutifan or lenvatinib in the belzutifan+lenvatinib arm, whichever occurs last, and 23 days after the last dose of cabozantinib:
• Be abstinent from heterosexual intercourse as their preferred and usual lifestyle and agree to remain abstinent
OR
•Must agree to use contraception unless confirmed to be azoospermic.
-Contraceptive use by men should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
-If the contraception requirements in the local label for any of the study interventions is more stringent than the requirements above, the local label requirements are to be followed.
11. A female participant is eligible to participate if she is not pregnant or breastfeeding, and at least 1 of the following conditions applies:
• Is not a WOCBP.
OR
• Is a WOCBP and using a contraceptive method that is highly effective during the treatment period and for at least 120 days after the last dose of cabozantinib for participants in the cabozantinib arm, or during the treatment period and for at least 30 days after the last dose of belzutifan or lenvatinib (whichever occurs last) for participants in the belzutifan +lenvatinib arm.
- A WOCBP must have a negative highly sensitive pregnancy test within 24 hours (urine) or 72 hours (serum) before the first dose of study intervention.
- Contraceptive use by women should be consistent with local r

Exclusion Criteria

1. A WOCBP who has a positive urine pregnancy test within 24 hours before first dose of study intervention. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required.
2. Has any of the following:
- A pulse oximeter reading <92% at rest, or
- Requires intermittent supplemental oxygen, or
- Requires chronic supplemental oxygen.
3. Has a known additional malignancy that is progressing or has required active treatment within the past 3 years.
4. Has known CNS metastases and/or carcinomatous meningitis.
5. Has clinically significant cardiovascular disease within 12 months from first dose of study intervention, including but not limited to New York Heart Association Class III or IV congestive heart failure, unstable angina, myocardial infarction, cerebral vascular accident, or cardiac arrhythmia.
6. Prolongation of QTc interval to >480 ms.
7. Has a LVEF below the institutional (or local laboratory) normal range as determined by MUGA or ECHO.
8. Has urine protein =1 g/24 hours.
9. Has symptomatic pleural effusion (for example cough, dyspnea, pleuritic chest pain). A participant who is clinically stable after treatment for these conditions (including therapeutic thoraco- or paracentesis) is eligible.
10. Has pre-existing =Grade 3 gastrointestinal or nongastrointestinal fistula.
11. Has moderate to severe hepatic impairment (Child-Pugh B or C).
12. Has clinically significant hematuria, hematemesis or hemoptysis (>2.5 ml) of red blood, or other history of significant bleeding (eg, pulmonary hemorrhage) within 3 months before randomization.
13. Has other clinically significant disorders such as:
a. Serious active nonhealing wound/ulcer/bone fracture
b. Requirement for hemodialysis or peritoneal dialysis
c. History of solid organ transplantation
14. Received colony-stimulating factors (eg, G-CSF, GMCSF or recombinant EPO) within 28 days before randomization.
15. Has a known psychiatric or substance abuse disorder that would interfere with cooperation with the requirements of the study.
16. Is unable to swallow orally administered medication or has a gastrointestinal disorder affecting absorption (eg, gastrectomy, partial bowel obstruction, malabsorption).
17. Has known hypersensitivity or allergy to the active pharmaceutical ingredient or any component of the study intervention (belzutifan, lenvatinib, or cabozantinib) formulations.
18. Has received prior treatment with belzutifan or another HIF-2a inhibitor.
19. Has received prior treatment with lenvatinib.
20. Has received prior treatment with cabozantinib.
21. Has received any type of small molecule kinase inhibitor (including investigational kinase inhibitor) within 2 weeks before randomization.
22. Has received any type of systemic anticancer antibody (including investigational antibody) =28 days before randomization.
23. Has received prior radiotherapy within 2 weeks before randomization. Participants must have recovered from all radiation-related toxicities and not require corticosteroids. A 1-week washout is required for palliative radiation (=2 weeks of radiotherapy) to non-CNS disease.
24. Has had major surgery within 3 weeks before randomization.
25. Is receiving concomitant treatment, in therapeutic doses, with anticoagulants such as heparin, thrombin or Factor Xa inhibitors, or antiplatelet agents (eg, clopidogrel).
26. Is currently receiving strong inhibitors of CYP3A4 (eg, boceprevir, cobicistat, itraconazole, ketoconazole, clarithrom

Study & Design

Study Type
Interventional clinical trial of medicinal product
Study Design
Not specified
Primary Outcome Measures
NameTimeMethod
Main Objective: 1. To compare belzutifan+lenvatinib to cabozantinib with respect to progression-free survival (PFS) per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 as assessed by blinded independent central review (BICR)<br>2. To compare belzutifan+lenvatinib to cabozantinib with respect to overall survival (OS)<br>;Secondary Objective: 1. To compare belzutifan+lenvatinib to cabozantinib with respect to objective response rate (ORR) based on RECIST 1.1 as assessed by BICR<br>2. To evaluate the duration of response (DOR) as assessed by BICR according to RECIST 1.1<br>3. To evaluate the safety and tolerability of belzutifan+lenvatinib compared to cabozantinib;Primary end point(s): 1. Progression-Free Survival (PFS) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review (BICR)<br>2. Overall Survival (OS);Timepoint(s) of evaluation of this end point: 1. Up to approximately 34 months <br>2. Up to approximately 44 months
Secondary Outcome Measures
NameTimeMethod
Secondary end point(s): 1. Objective Response Rate (ORR) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review (BICR)<br>2. Duration of Response (DOR) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review (BICR)<br>3. Number of Participants Who Experienced One or More Adverse Events (AEs)<br>4. Number of Participants Who Discontinued Study Treatment Due to an Adverse Event (AE);Timepoint(s) of evaluation of this end point: 1. Up to approximately 24 months<br>2. Up to approximately 44 months<br>3. Up to approximately 44 months<br>4. Up to approximately 44 months
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