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Phase 3 study of belzutifan plus pembrolizumab as adjuvant treatment in renal cell carcinoma (RCC)

A Multicenter, Double-blind, Randomized Phase 3 Study to Compare the Efficacy and Safety of Belzutifan (MK-6482) Plus Pembrolizumab (MK-3475) Versus Placebo Plus Pembrolizumab, in the Adjuvant Treatment of Clear Cell Renal Cell Carcinoma (ccRCC) Post Nephrectomy (MK-6482-022) - Phase 3 study of belzutifan plus pembrolizumab as adjuvant treatment in renal cell carcinoma (RCC)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2021-003436-92-DE
Enrollment
1600
Registered
2021-11-29
Start date
2022-03-28
Completion date
Unknown
Last updated
2025-03-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Renal Cell Carcinoma MedDRA version: 21.1 Level: PT Classification code 10067946 Term: Renal cell carcinoma System Organ Class: 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps)

Interventions

Sponsors

Merck Sharp & Dohme LLC
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Has a histologically or cytologically confirmed diagnosis of RCC with clear cell component per AJCC (8th Edition), with or without sarcomatoid features. 2. Has intermediate-high risk, high risk, or M1 NED RCC as defined by the following pathological tumor-node metastasis and tumor grading: a) Intermediate-high risk RCC: • pT2, Grade 4 or sarcomatoid, N0, M0 • pT3, any grade, N0, M0 b) High-risk RCC: • pT4, any grade, N0, M0 • pT, any stage, any grade, N+, M0 c) M1 NED RCC participants who present not only with the primary kidney tumor, but also solid, isolated, soft tissue metastases that can be completely resected at 1 of the following: • the time of nephrectomy (synchronous), or • =2 years from nephrectomy (metachronous) 3. Has undergone complete resection of the primary tumor (partial or radical nephrectomy) and complete resection of solid, isolated, soft tissue metastatic lesion(s) in M1 NED participants. 4. Must have undergone a nephrectomy and/or metastasectomy =12 weeks prior to randomization. 5. Must be tumor-free before randomization as assessed by the investigator and verified by BICR by either CT or MRI scan of the brain and CAP (=28 days from randomization) and a bone scan (=42 days from randomization). 6. Must have provided tissue per any of the following: • Nephrectomy only: tissue from nephrectomy (required). • Synchronous M1 NED: tissue from nephrectomy (required) and tissue from metastasectomy (if available). • Metachronous M1 NED: tissue from metastasectomy (required) and tissue from nephrectomy (if available). 7. Is male or female, at least 18 years of age, at the time of signing the informed consent. 8. Has ECOG performance status of 0 to 1 within 10 days before randomization. 9. Agrees to the following during the intervention period and for at least the time needed to eliminate the study intervention after the last dose of study intervention. The length of time required to continue contraception for the study intervention is as follows: - Belzutifan/placebo – at least 7 days after the last dose • Abstains from heterosexual intercourse as their preferred and usual lifestyle and agree to remain abstinent OR • Uses contraception unless confirmed to be azoospermic as detailed below: - Uses a male condom plus partner use of an additional contraceptive method when having penile-vaginal intercourse with a WOCBP who is not currently pregnant. - 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. 10. A female participant is eligible to participate if she is not pregnant or breastfeeding, and at least one of the following conditions applies: • Not a WOCBP OR • A WOCBP and: - Uses a contraceptive method that is highly effective (with a failure rate of <1% per year), with low user dependency, or be abstinent from heterosexual intercourse as their preferred and usual lifestyle, during the intervention period and for at least the time needed to eliminate each study intervention after the last dose of study intervention. The length of time required to continue contraception for each study intervention is as follows: - At least 120 days after the last dose of pembrolizumab or - At least 30 days after last dose of belzutifan/placebo, whichever occur

Exclusion criteria

Exclusion criteria: 1. Has had a major surgery, other than nephrectomy plus resection of preexisting metastases for M1 NED participants, within 4 weeks prior to randomization. 2. Has residual thrombus post nephrectomy in the vena renalis or vena cava. 3. Has any of the following: • Pulse oximeter reading <92% at rest, or • Requires intermittent supplemental oxygen, or • Requires chronic supplemental oxygen. 4. Has clinically significant cardiovascular disease within 6 months from first dose of study intervention, including NYHA III or IV congestive heart failure, unstable angina, myocardial infarction, cerebrovascular accident, undergone CABG or PTCA, or cardiac arrhythmia. 5. Has other clinically significant disorders such as: • Serious active nonhealing wound/ulcer/bone fracture • Requirement for hemodialysis or peritoneal dialysis 6. Has preexisting brain or bone metastatic lesions. 7. Has received colony-stimulating factors (eg, G-CSF, GM-CSF) or recombinant EPO or transfusion within 28 days before study intervention initiation. 8. Is unable to swallow orally administered medication or has a history or current evidence of a GI condition (eg, inflammatory bowel disease, Crohn’s disease, ulcerative colitis) or impaired liver function or diseases that in the opinion of the investigator may significantly alter the absorption or metabolism of oral study intervention. 9. Has a severe hypersensitivity (Grade =3) reaction to belzutifan/placebo or pembrolizumab and/or any of their excipients. 10. Has received prior systemic therapy for RCC 11. Has received prior radiotherapy for RCC. 12. Has received a live or live-attenuated vaccine within 30 days before the first dose of study intervention. Administration of killed vaccines are allowed. 13. Is currently participating in or has participated in a study of an investigational agent or has used an investigational device within 4 weeks before the first dose of study intervention. 14. Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior the first dose of study intervention. 15. Has a known additional malignancy (other than RCC treated with nephrectomy and/or metastasectomy) that is progressing or has required active treatment within the past 3 years. 16. Has an active autoimmune disease that has required systemic treatment in past 2 years (ie, with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (eg, thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment and is allowed. 17. Has a history of (noninfectious) pneumonitis/interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease. 18. Has an active infection, requiring systemic therapy. 19. Has a known history of HIV infection, a known history of Hepatitis B (defined as HbsAg reactive), or known active Hepatitis C virus (defined as HCV RNA [qualitative] is detected) infection. 20. Has a history or current evidence of any condition, therapy, laboratory abnormality, or other circumstance that might confound the results of the study, interfere with the participant's participation for the full duration of the study, such that it is not in the best interest of the participant to participate, in the opinion of the treating inves

Design outcomes

Primary

MeasureTime frame
Main Objective: 1.To compare disease-free survival (DFS) as assessed by investigator for participants treated with belzutifan plus pembrolizumab versus those receiving placebo plus pembrolizumab.;Secondary Objective: 1.To compare overall survival (OS) for participants treated with belzutifan plus pembrolizumab versus those receiving placebo plus pembrolizumab. 2.To compare the safety and tolerability profiles for participants treated with belzutifan plus pembrolizumab versus those receiving placebo plus pembrolizumab. 3To compare measures of disease recurrence-specific survival (DRSS) as assessed by the investigator, in participants treated with belzutifan plus pembrolizumab versus those receiving placebo plus pembrolizumab. 4. To compare participants treated with belzutifan plus pembrolizumab versus those receiving placebo plus pembrolizumab with respect to mean change from baseline in health-related quality of life (HRQoL) and symptoms using the European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life 30 Questionnaire (QLQ-C30) and the Functional Assessment of Cancer Therapy –Kidney Symptom Index Disease-related Symptoms (FKSI-DRS).;Primary end point(s): 1.Disease-Free Survival (DFS);Timepoint(s) of evaluation of this end point: 1.Up to approximately 66 months

Secondary

MeasureTime frame
Secondary end point(s): 1.Overall Survival (OS) 2.Number of Participants Who Experience At Least One Adverse event (AE) 3.Number of Participants Who Discontinue Study Treatment Due to an AE 4.Disease Recurrence-Specific Survival 1 (DRSS1) 5.Disease Recurrence-Specific Survival 2 (DRSS2) 6.Change From Baseline in Health-Related Quality-of-Life (HRQoL) Using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30) Items 29 and 30 Score 7.Change From Baseline in Physical Functioning Using the EORTC QLQ-C30 Items 1- 5 Score 8.Change From Baseline in Role Functioning Using the EORTC QLQ-C30 Items 6 and 7 Score 9.Change From Baseline in Disease Symptoms Using the Functional Assessment of Cancer Therapy-Kidney Symptom Index-Disease-related Symptoms (FKSI-DRS) Items 1-9 Score ;Timepoint(s) of evaluation of this end point: 1.Up to approximately 94 months 2.Up to approximately 66 weeks 3.Up to approximately 54 weeks 4.Up to approximately 66 months 5.Up to approximately 66 months 6.Baseline (Day 1) and Up to approximately 66 months 7.Baseline (Day 1) and Up to approximately 66 months 8.Baseline (Day 1) and Up to approximately 66 months 9.Baseline (Day 1) and Up to approximately 66 months

Countries

Australia, Brazil, Bulgaria, Canada, Chile, China, Colombia, Czechia, Czech Republic, Finland, France, Germany, Greece, Hungary, Ireland, Israel, Italy, Japan, Korea, Republic of, Malaysia, Mexico, Netherlands, New Zealand, Poland, Romania, Russian Federation, Singapore, Spain, Sweden, Taiwan, Thailand, Turkey, Ukraine, United Kingdom, United States

Contacts

Public ContactManish Sharma

Merck Sharp & Dohme LLC

manish.sharma@merck.com+17325945535

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026