ClinicalTrials.gov record
Testing Pembrolizumab Versus Observation in Patients With Merkel Cell Carcinoma After Surgery, STAMP Trial
ClinicalTrials.gov ID: NCT03712605
Public ClinicalTrials.gov record NCT03712605. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
STAMP: Surgically Treated Adjuvant Merkel Cell Carcinoma With Pembrolizumab, a Phase III Trial
Study identification
- NCT ID
- NCT03712605
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- National Cancer Institute (NCI)
- NIH
- Enrollment
- 280 participants
Conditions and interventions
Conditions
Not listed
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Nov 14, 2018
- Primary completion
- Dec 30, 2026
- Completion
- Dec 30, 2026
- Last update posted
- May 12, 2026
2018 – 2026
United States locations
- U.S. sites
- 126
- U.S. states
- 12
- U.S. cities
- 80
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Alabama at Birmingham Cancer Center | Birmingham | Alabama | 35233 | — |
| Anchorage Associates in Radiation Medicine | Anchorage | Alaska | 98508 | — |
| Anchorage Radiation Therapy Center | Anchorage | Alaska | 99504 | — |
| Alaska Breast Care and Surgery LLC | Anchorage | Alaska | 99508 | — |
| Alaska Oncology and Hematology LLC | Anchorage | Alaska | 99508 | — |
| Alaska Women's Cancer Care | Anchorage | Alaska | 99508 | — |
| Anchorage Oncology Centre | Anchorage | Alaska | 99508 | — |
| Katmai Oncology Group | Anchorage | Alaska | 99508 | — |
| Providence Alaska Medical Center | Anchorage | Alaska | 99508 | — |
| Fairbanks Memorial Hospital | Fairbanks | Alaska | 99701 | — |
| Kingman Regional Medical Center | Kingman | Arizona | 86401 | — |
| Banner University Medical Center - Tucson | Tucson | Arizona | 85719 | — |
| University of Arizona Cancer Center-North Campus | Tucson | Arizona | 85719 | — |
| Mercy Hospital Fort Smith | Fort Smith | Arkansas | 72903 | — |
| PCR Oncology | Arroyo Grande | California | 93420 | — |
| Sutter Auburn Faith Hospital | Auburn | California | 95602 | — |
| Sutter Cancer Centers Radiation Oncology Services-Auburn | Auburn | California | 95603 | — |
| Alta Bates Summit Medical Center-Herrick Campus | Berkeley | California | 94704 | — |
| Keck Medicine of USC Buena Park | Buena Park | California | 90621 | — |
| Providence Saint Joseph Medical Center/Disney Family Cancer Center | Burbank | California | 91505 | — |
| Mills-Peninsula Medical Center | Burlingame | California | 94010 | — |
| Sutter Cancer Centers Radiation Oncology Services-Cameron Park | Cameron Park | California | 95682 | — |
| Eden Hospital Medical Center | Castro Valley | California | 94546 | — |
| Sutter Davis Hospital | Davis | California | 95616 | — |
| Palo Alto Medical Foundation-Fremont | Fremont | California | 94538 | — |
| Keck Medicine of USC Huntington Beach | Huntington Beach | California | 92648 | — |
| Keck Medicine of USC Koreatown | Los Angeles | California | 90020 | — |
| Los Angeles General Medical Center | Los Angeles | California | 90033 | — |
| USC / Norris Comprehensive Cancer Center | Los Angeles | California | 90033 | — |
| Memorial Medical Center | Modesto | California | 95355 | — |
| Palo Alto Medical Foundation-Camino Division | Mountain View | California | 94040 | — |
| Palo Alto Medical Foundation-Gynecologic Oncology | Mountain View | California | 94040 | — |
| USC Norris Oncology/Hematology-Newport Beach | Newport Beach | California | 92663 | — |
| Sutter Cancer Research Consortium | Novato | California | 94945 | — |
| UC Irvine Health/Chao Family Comprehensive Cancer Center | Orange | California | 92868 | — |
| Palo Alto Medical Foundation Health Care | Palo Alto | California | 94301 | — |
| Stanford Cancer Institute Palo Alto | Palo Alto | California | 94304 | — |
| VA Palo Alto Health Care System | Palo Alto | California | 94304 | — |
| Keck Medical Center of USC Pasadena | Pasadena | California | 91105 | — |
| Sutter Cancer Centers Radiation Oncology Services-Roseville | Roseville | California | 95661 | — |
| Sutter Roseville Medical Center | Roseville | California | 95661 | — |
| Sutter Medical Center Sacramento | Sacramento | California | 95816 | — |
| California Pacific Medical Center-Pacific Campus | San Francisco | California | 94115 | — |
| Palo Alto Medical Foundation-Santa Cruz | Santa Cruz | California | 95065 | — |
| Sutter Pacific Medical Foundation | Santa Rosa | California | 95403 | — |
| Palo Alto Medical Foundation-Sunnyvale | Sunnyvale | California | 94086 | — |
| Sutter Solano Medical Center/Cancer Center | Vallejo | California | 94589 | — |
| Rocky Mountain Cancer Centers-Aurora | Aurora | Colorado | 80012 | — |
| The Medical Center of Aurora | Aurora | Colorado | 80012 | — |
| Boulder Community Foothills Hospital | Boulder | Colorado | 80303 | — |
| Rocky Mountain Cancer Centers-Boulder | Boulder | Colorado | 80304 | — |
| Rocky Mountain Cancer Centers - Centennial | Centennial | Colorado | 80112 | — |
| Cancer Center of Colorado at Sloan's Lake | Denver | Colorado | 80204 | — |
| National Jewish Health-Main Campus | Denver | Colorado | 80206 | — |
| The Women's Imaging Center | Denver | Colorado | 80209 | — |
| Colorado Blood Cancer Institute | Denver | Colorado | 80218 | — |
| Presbyterian - Saint Lukes Medical Center - Health One | Denver | Colorado | 80218 | — |
| Rocky Mountain Cancer Centers-Midtown | Denver | Colorado | 80218 | — |
| Saint Joseph Hospital - Cancer Centers of Colorado | Denver | Colorado | 80218 | — |
| Rocky Mountain Cancer Centers-Rose | Denver | Colorado | 80220 | — |
| Rose Medical Center | Denver | Colorado | 80220 | — |
| Western Surgical Care | Denver | Colorado | 80220 | — |
| Mountain Blue Cancer Care Center - Swedish | Englewood | Colorado | 80113 | — |
| Rocky Mountain Cancer Centers - Swedish | Englewood | Colorado | 80113 | — |
| Swedish Medical Center | Englewood | Colorado | 80113 | — |
| The Melanoma and Skin Cancer Institute | Englewood | Colorado | 80113 | — |
| Lutheran Hospital - Cancer Centers of Colorado | Golden | Colorado | 80401 | — |
| National Jewish Health-Western Hematology Oncology | Golden | Colorado | 80401 | — |
| Saint Mary's Hospital and Regional Medical Center | Grand Junction | Colorado | 81501 | — |
| Banner North Colorado Medical Center | Greeley | Colorado | 80631 | — |
| Good Samaritan Hospital - Cancer Centers of Colorado | Lafayette | Colorado | 80026 | — |
| Rocky Mountain Cancer Centers-Lakewood | Lakewood | Colorado | 80228 | — |
| Rocky Mountain Cancer Centers-Littleton | Littleton | Colorado | 80120 | — |
| Rocky Mountain Cancer Centers-Sky Ridge | Lone Tree | Colorado | 80124 | — |
| Sky Ridge Medical Center | Lone Tree | Colorado | 80124 | — |
| Banner North Colorado Medical Center - Loveland Campus | Loveland | Colorado | 80539 | — |
| National Jewish Health-Northern Hematology Oncology | Thornton | Colorado | 80260 | — |
| Rocky Mountain Cancer Centers-Thornton | Thornton | Colorado | 80260 | — |
| Intermountain Health Lutheran Hospital | Wheat Ridge | Colorado | 80401 | — |
| Smilow Cancer Center/Yale-New Haven Hospital | New Haven | Connecticut | 06510 | — |
| Yale University | New Haven | Connecticut | 06520 | — |
| MedStar Georgetown University Hospital | Washington D.C. | District of Columbia | 20007 | — |
| Sibley Memorial Hospital | Washington D.C. | District of Columbia | 20016 | — |
| UM Sylvester Comprehensive Cancer Center at Aventura | Aventura | Florida | 33180 | — |
| UM Sylvester Comprehensive Cancer Center at Coral Gables | Coral Gables | Florida | 33146 | — |
| UM Sylvester Comprehensive Cancer Center at Deerfield Beach | Deerfield Beach | Florida | 33442 | — |
| Holy Cross Hospital | Fort Lauderdale | Florida | 33308 | — |
| Regional Cancer Center-Lee Memorial Health System | Fort Myers | Florida | 33905 | — |
| University of Miami Miller School of Medicine-Sylvester Cancer Center | Miami | Florida | 33136 | — |
| Miami Cancer Institute | Miami | Florida | 33176 | — |
| Orlando Health Cancer Institute | Orlando | Florida | 32806 | — |
| UM Sylvester Comprehensive Cancer Center at Plantation | Plantation | Florida | 33324 | — |
| Moffitt Cancer Center-International Plaza | Tampa | Florida | 33607 | — |
| Moffitt Cancer Center - McKinley Campus | Tampa | Florida | 33612 | — |
| Moffitt Cancer Center | Tampa | Florida | 33612 | — |
| Emory University Hospital Midtown | Atlanta | Georgia | 30308 | — |
| Emory University Hospital/Winship Cancer Institute | Atlanta | Georgia | 30322 | — |
| Emory Saint Joseph's Hospital | Atlanta | Georgia | 30342 | — |
| Lewis Cancer and Research Pavilion at Saint Joseph's/Candler | Savannah | Georgia | 31405 | — |
| Summit Cancer Care-Candler | Savannah | Georgia | 31405 | — |
| Saint Alphonsus Cancer Care Center-Boise | Boise | Idaho | 83706 | — |
| Saint Luke's Cancer Institute - Boise | Boise | Idaho | 83712 | — |
| Saint Alphonsus Cancer Care Center-Caldwell | Caldwell | Idaho | 83605 | — |
| Kootenai Health - Coeur d'Alene | Coeur d'Alene | Idaho | 83814 | — |
| Walter Knox Memorial Hospital | Emmett | Idaho | 83617 | — |
| Saint Luke's Cancer Institute - Fruitland | Fruitland | Idaho | 83619 | — |
| Idaho Urologic Institute-Meridian | Meridian | Idaho | 83642 | — |
| Saint Luke's Cancer Institute - Meridian | Meridian | Idaho | 83642 | — |
| Saint Alphonsus Cancer Care Center-Nampa | Nampa | Idaho | 83687 | — |
| Saint Luke's Cancer Institute - Nampa | Nampa | Idaho | 83687 | — |
| Kootenai Clinic Cancer Services - Post Falls | Post Falls | Idaho | 83854 | — |
| Kootenai Clinic Cancer Services - Sandpoint | Sandpoint | Idaho | 83864 | — |
| Saint Luke's Cancer Institute - Twin Falls | Twin Falls | Idaho | 83301 | — |
| OSF Saint Anthony's Health Center | Alton | Illinois | 62002 | — |
| Rush-Copley Medical Center | Aurora | Illinois | 60504 | — |
| Illinois CancerCare-Bloomington | Bloomington | Illinois | 61704 | — |
| Illinois CancerCare-Canton | Canton | Illinois | 61520 | — |
| Memorial Hospital of Carbondale | Carbondale | Illinois | 62902 | — |
| SIH Cancer Institute | Carterville | Illinois | 62918 | — |
| Illinois CancerCare-Carthage | Carthage | Illinois | 62321 | — |
| Centralia Oncology Clinic | Centralia | Illinois | 62801 | — |
| Saint Mary's Hospital | Centralia | Illinois | 62801 | — |
| Northwestern University | Chicago | Illinois | 60611 | — |
| Rush MD Anderson Cancer Center | Chicago | Illinois | 60612 | — |
| University of Chicago Comprehensive Cancer Center | Chicago | Illinois | 60637 | — |
| Carle at The Riverfront | Danville | Illinois | 61832 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03712605, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted May 12, 2026 · Synced May 16, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03712605 live on ClinicalTrials.gov.