ClinicalTrials.gov record
Testing the Addition of Radiation Therapy to Immunotherapy for Merkel Cell Carcinoma
ClinicalTrials.gov ID: NCT03304639
Public ClinicalTrials.gov record NCT03304639. 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
A Randomized Phase II Study of Anti-PD1 Antibody [MK-3475 (Pembrolizumab)] Alone Versus Anti-PD1 Antibody Plus Stereotactic Body Radiation Therapy in Advanced Merkel Cell Carcinoma
Study identification
- NCT ID
- NCT03304639
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- National Cancer Institute (NCI)
- NIH
- Enrollment
- 9 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
- Jun 11, 2018
- Primary completion
- Jun 6, 2022
- Completion
- Feb 18, 2026
- Last update posted
- May 12, 2026
2018 – 2026
United States locations
- U.S. sites
- 73
- U.S. states
- 13
- U.S. cities
- 49
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Anchorage Associates in Radiation Medicine | Anchorage | Alaska | 98508 | — |
| 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 | — |
| 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 | — |
| CHI Saint Vincent Cancer Center Hot Springs | Hot Springs | Arkansas | 71913 | — |
| PCR Oncology | Arroyo Grande | California | 93420 | — |
| Providence Saint Joseph Medical Center/Disney Family Cancer Center | Burbank | California | 91505 | — |
| Penrose-Saint Francis Healthcare | Colorado Springs | Colorado | 80907 | — |
| Rocky Mountain Cancer Centers-Penrose | Colorado Springs | Colorado | 80907 | — |
| AdventHealth Porter | Denver | Colorado | 80210 | — |
| Saint Anthony Hospital | Lakewood | Colorado | 80228 | — |
| AdventHealth Littleton | Littleton | Colorado | 80122 | — |
| Longmont United Hospital | Longmont | Colorado | 80501 | — |
| AdventHealth Parker | Parker | Colorado | 80138 | — |
| Saint Mary Corwin Medical Center | Pueblo | Colorado | 81004 | — |
| Rocky Mountain Cancer Centers-Thornton | Thornton | Colorado | 80260 | — |
| Smilow Cancer Center/Yale-New Haven Hospital | New Haven | Connecticut | 06510 | — |
| Yale University | New Haven | Connecticut | 06520 | — |
| Mount Sinai Comprehensive Cancer Center at Aventura | Aventura | Florida | 33180 | — |
| Holy Cross Hospital | Fort Lauderdale | Florida | 33308 | — |
| Mount Sinai Medical Center | Miami Beach | Florida | 33140 | — |
| Lewis Cancer and Research Pavilion at Saint Joseph's/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 | — |
| 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 | — |
| Rush-Copley Medical Center | Aurora | Illinois | 60504 | — |
| 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 | — |
| Carle Physician Group-Effingham | Effingham | Illinois | 62401 | — |
| Northwestern Medicine Lake Forest Hospital | Lake Forest | Illinois | 60045 | — |
| Carle Physician Group-Mattoon/Charleston | Mattoon | Illinois | 61938 | — |
| SSM Health Good Samaritan | Mount Vernon | Illinois | 62864 | — |
| UC Comprehensive Cancer Center at Silver Cross | New Lenox | Illinois | 60451 | — |
| University of Chicago Medicine-Orland Park | Orland Park | Illinois | 60462 | — |
| Carle Cancer Center | Urbana | Illinois | 61801 | — |
| The Carle Foundation Hospital | Urbana | Illinois | 61801 | — |
| Rush-Copley Healthcare Center | Yorkville | Illinois | 60560 | — |
| Indiana University/Melvin and Bren Simon Cancer Center | Indianapolis | Indiana | 46202 | — |
| Sidney and Lois Eskenazi Hospital | Indianapolis | Indiana | 46202 | — |
| Mercy Cancer Center-West Lakes | Clive | Iowa | 50325 | — |
| UI Health Care Mission Cancer and Blood - West Des Moines Clinic | Clive | Iowa | 50325 | — |
| Greater Regional Medical Center | Creston | Iowa | 50801 | — |
| Iowa Methodist Medical Center | Des Moines | Iowa | 50309 | — |
| UI Health Care Mission Cancer and Blood - Des Moines Clinic | Des Moines | Iowa | 50309 | — |
| Broadlawns Medical Center | Des Moines | Iowa | 50314 | — |
| Mercy Medical Center - Des Moines | Des Moines | Iowa | 50314 | — |
| UI Health Care Mission Cancer and Blood - Laurel Clinic | Des Moines | Iowa | 50314 | — |
| Iowa Lutheran Hospital | Des Moines | Iowa | 50316 | — |
| Methodist West Hospital | West Des Moines | Iowa | 50266-7700 | — |
| Mercy Medical Center-West Lakes | West Des Moines | Iowa | 50266 | — |
| Central Care Cancer Center - Garden City | Garden City | Kansas | 67846 | — |
| Central Care Cancer Center - Great Bend | Great Bend | Kansas | 67530 | — |
| University of Kansas Cancer Center | Kansas City | Kansas | 66160 | — |
| Lawrence Memorial Hospital | Lawrence | Kansas | 66044 | — |
| Kansas Institute of Medicine Cancer and Blood Center | Lenexa | Kansas | 66219 | — |
| Minimally Invasive Surgery Hospital | Lenexa | Kansas | 66219 | — |
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 NCT03304639, 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 20, 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 NCT03304639 live on ClinicalTrials.gov.