The trial is taking place at:

ONCOVIDA | Santiago, Chile

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A Study of Adjuvant Pembrolizumab/Vibostolimab (MK-7684A) Versus Pembrolizumab for Resected High-Risk Melanoma in Participants With High-Risk Stage II-IV Melanoma (MK-7684A-010/KEYVIBE-010)

Merck Sharp & Dohme (MSD) logo

Merck Sharp & Dohme (MSD)

Status and phase

Active, not recruiting
Phase 3




Biological: Pembrolizumab/Vibostolimab
Biological: Pembrolizumab

Study type


Funder types



jRCT2031230099 (Registry Identifier)
2022-501417-31-00 (Registry Identifier)
MK-7684A-010 (Other Identifier)
KEYVIBE-010 (Other Identifier)

Details and patient eligibility


The primary purpose of this study is to compare pembrolizumab/vibostolimab to pembrolizumab with respect to recurrence-free survival (RFS). The primary hypothesis is that pembrolizumab/vibostolimab is superior to pembrolizumab with respect to RFS as assessed by the investigator in participants with high-risk resected Stage IIB, IIC, III and IV melanoma.

Full description

With Amendment 4, participants will discontinue treatment with pembrolizumab/vibostolimab. No formal analysis of RFS will occur and no analysis of distant metastasis-free survival (DMFS), overall survival (OS), or change from baseline in the European Organization for Research and Treatment of Cancer (EORTC)-Quality of Life Questionnaire-Core 30 (QLQ-C30) outcome measures will occur.


1,594 patients




12+ years old


No Healthy Volunteers

Inclusion criteria

  • Has surgically resected and histologically or pathologically confirmed diagnosis of Stage IIB and IIC (pathological or clinical), III, or IV cutaneous melanoma per the American Joint Committee on Cancer (AJCC) eighth edition guidelines
  • Has not received any prior systemic therapy for melanoma beyond surgical resection
  • Has had no more than 12 weeks between final surgical resection and randomization
  • Human immunodeficiency virus (HIV)-infected participants must have well controlled HIV on anti-retroviral therapy (ART)
  • Participants who are hepatitis B surface antigen (HBsAg) positive are eligible if they have received hepatitis B virus (HBV) antiviral therapy for at least 4 weeks and have undetectable HBV viral load before randomization
  • Participants with history of hepatitis C virus (HCV) infection are eligible if HCV viral load is undetectable at screening

Exclusion criteria

  • Has ocular, mucosal, or conjunctival melanoma
  • 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 medication
  • Has not adequately recovered from major surgical procedure or has ongoing surgical complications
  • Has received prior radiotherapy within 2 weeks of start of study intervention or has had a history of radiation pneumonitis
  • Received a live or live attenuated vaccine within 30 days before the first dose of study intervention. Administration of killed vaccines is allowed
  • Has received an investigational agent or has used an investigational device within 4 weeks before study intervention administration
  • Has a history of (noninfectious) pneumonitis/interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease
  • Has a known additional malignancy that is progressing or has required active treatment within the past 3 years
  • Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis
  • Has an active autoimmune disease that has required systemic treatment in past 2 years
  • Has an active infection requiring systemic therapy
  • Has had an allogenic tissue/solid organ transplant

Trial design

Primary purpose




Interventional model

Parallel Assignment


Double Blind

1,594 participants in 2 patient groups

Experimental group
Participants receive pembrolizumab/vibostolimab (coformulation of 200 mg pembrolizumab and 200 mg vibostolimab) via intravenous (IV) infusion on Day 1 of each cycle (cycle length = 3 weeks) for up to 17 cycles (up to \~1 year).
Biological: Pembrolizumab/Vibostolimab
Active Comparator group
Adult participants receive 200 mg and adolescent participants ≥40 kg receive 2 mg/kg (up to a max of 200 mg) pembrolizumab via IV infusion on Day 1 of each cycle (cycle length = 3 weeks) for up to 17 cycles (up to \~1 year).
Biological: Pembrolizumab

Trial contacts and locations



Central trial contact

Toll Free Number

Data sourced from

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