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Study identifier: NCT03712605 Synced from ClinicalTrials.gov · August 02, 2026
● Active Not Recruiting

Testing Pembrolizumab Versus Observation in Patients With Merkel Cell Carcinoma After Surgery, STAMP Trial

Condition: Pathologic Stage I Cutaneous Merkel Cell Carcinoma AJCC v8 · Pathologic Stage II Cutaneous Merkel Cell Carcinoma AJCC v8 · Pathologic Stage III Cutaneous Merkel Cell Carcinoma AJCC v8  ·  Sponsor: National Cancer Institute (NCI)

PhasePhase 3
Planned participants280
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This phase III trial studies how well pembrolizumab works compared to standard of care observation in treating patients with stage I-III Merkel cell cancer that has been completely removed by surgery (resected). Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread.

This description comes directly from the study's public registry record.

Talk to the study team

No contact information is available for this study as per the public registry record.

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Locations (553)

University of Alabama at Birmingham Cancer CenterBirmingham, Alabama, United States
Anchorage Associates in Radiation MedicineAnchorage, Alaska, United States
Anchorage Radiation Therapy CenterAnchorage, Alaska, United States
Alaska Breast Care and Surgery LLCAnchorage, Alaska, United States
Alaska Oncology and Hematology LLCAnchorage, Alaska, United States
Alaska Women's Cancer CareAnchorage, Alaska, United States
Anchorage Oncology CentreAnchorage, Alaska, United States
Katmai Oncology GroupAnchorage, Alaska, United States
Providence Alaska Medical CenterAnchorage, Alaska, United States
Fairbanks Memorial HospitalFairbanks, Alaska, United States
Kingman Regional Medical CenterKingman, Arizona, United States
Banner University Medical Center - TucsonTucson, Arizona, United States

+ 541 more locations — full list on the registry record.

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