AzTrials
AzTrials

Pathologic Stage I Cutaneous Merkel Cell Carcinoma AJCC v8Phase 3NCT03712605

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

A Phase 3 study testing Best Practice, Biospecimen Collection and Computed Tomography in people with Pathologic Stage I Cutaneous Merkel Cell Carcinoma AJCC v8 and Pathologic Stage II Cutaneous Merkel Cell Carcinoma AJCC v8, run by National Cancer Institute (NCI) at 552 sites in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

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). Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Best Practice, Biospecimen Collection and Computed Tomography
Could I receive a placebo?
No, everyone receives an active treatment
How many people
280 participants
Where
552 sitesUnited States
Study dates
15 Nov 2018to 31 Dec 2026
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patient must be >= 18 years of age
  • Patients must have an Eastern Cooperative Oncology Group (ECOG) performance status: 0, 1, or 2 (However, those patients with a performance state of 3 because they are wheel chair bound due to congenital or traumatic events more than one year before the diagnosis of Merkel cell carcinoma are eligible).
  • Patient must not be pregnant or breast-feeding due to the unknown effects of the study drug in this setting. All patients of childbearing potential must have a blood test or urine study within 2 weeks prior to randomization to rule out pregnancy. A patient of childbearing potential is anyone, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria: 1) has achieved menarche at some point, 2) has not undergone a hysterectomy or bilateral oophorectomy; or 3) has not been naturally postmenopausal (amenorrhea following cancer therapy does not rule out childbearing potential) for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months).
  • Patients on Arm A pembrolizumab (MK-3475) must not conceive or father children by using accepted and effective method(s) of contraception or by abstaining from sexual intercourse from the time of registration, while on study treatment, and continue for 120 days after the last dose of study treatment. For patients on Arm B only receiving radiation therapy, contraception use should be per institutional standard.
  • Patient must have a histological confirmation of diagnosis of Merkel cell carcinoma (MCC), pathologic stages (American Joint Committee on Cancer [AJCC] version 8) I-IIIb.
  • Stage I patients with negative sentinel lymph node biopsy are ineligible. Patients who have a positive biopsy or for whom no biopsy was done are eligible.
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  • Patients with distant metastatic disease (stage IV) are ineligible.
  • The primary tumor must have grossly negative margins. (Microscopically positive margins are allowed).
  • Cancers of unknown primary that have regional disease only are eligible.
  • Complete nodal dissection is not required for eligibility.
  • Patients with all macroscopic Merkel cell carcinoma (either identified by physical exam or imaging) must have been completely resected by surgery within 16 weeks before randomization.
  • All patients must have disease-free status documented by a complete physical examination and conventional imaging studies within 8 weeks prior to randomization.
  • Patient may not have a history of distant metastatic disease.
  • NOTE: Loco-regional recurrent disease is acceptable, as long as this is not metastatic (prior surgery with or without radiation therapy is acceptable).
  • For patients with initial presentation of Merkel cell carcinoma, patient must have no previous systemic therapy or radiation therapy prior to surgery for Merkel cell carcinoma and cannot have completed adjuvant radiation therapy for Merkel cell carcinoma more than 6 weeks prior to randomization. Patients actively undergoing radiation therapy or having completed adjuvant radiation therapy within 6 weeks of randomization are eligible, as long as resection date is within 16 weeks of randomization. Patients with prior radiation at a non-Radiation Oncology Core (IROC) provider are eligible for the trial. If the patient has not received radiation, and treatment at a Radiation Oncology Core (IROC) provider is not possible, the patient can start and complete radiation prior to randomization, with recommendations to follow radiation protocol guidelines with submission of treatment records.
  • White blood count >= 2000/uL (within 4 weeks prior to randomization).
  • Absolute neutrophil count (ANC) >= 1000/uL (within 4 weeks prior to randomization).
  • Platelets >= 75 x 10^3/uL (within 4 weeks prior to randomization).
  • Hemoglobin >= 8 g/dL (>= 80 g/L; may be transfused) (within 4 weeks prior to randomization).
  • Creatinine =< 2.0 x institutional upper limit of normal (ULN) (within 4 weeks prior to randomization).
  • Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =< 2.5 x institutional ULN (within 4 weeks prior to randomization).
  • Total bilirubin =< 2.0 x institutional ULN, (except patients with Gilbert's syndrome, who must have a total bilirubin less than 3.0 mg/dL) (within 4 weeks prior to randomization).
  • Patients who are human immunodeficiency virus (HIV)+ with undetectable HIV viral load are eligible provided they meet all other protocol criteria for participation.
  • Patients with hepatitis B virus (HBV) or hepatitis C virus (HCV) infection are eligible provided viral loads are undetectable. Patients on suppressive therapy are eligible.
  • Patients must not be on active immunosuppression, have a history of life threatening virus, have had other (beside non-melanoma skin cancers, or recent indolent cancers e.g.: resected low grade prostate cancer) invasive cancer diagnoses in the last two years, or have had immunotherapy of any kind within the last 2 years prior to randomization.
  • Patients must not have a history of (non-infectious) pneumonitis that required steroids or has current pneumonitis.
  • Operative notes from patient's surgical resection must be accessible.

Who cannot join

None listed.

Trial locations and contacts

552 sites in 1 country.

300 sites in 1 country

United States300 sites

  • Providence Regional Cancer System-Aberdeen

    Aberdeen, Washington, 98520

  • Riverwood Healthcare Center

    Aitkin, Minnesota, 56431

  • Lehigh Valley Hospital-Cedar Crest

    Allentown, Pennsylvania, 18103

  • OSF Saint Anthony's Health Center

    Alton, Illinois, 62002

  • Community Hospital of Anaconda

    Anaconda, Montana, 59711

  • 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

  • Trinity Health Saint Joseph Mercy Hospital Ann Arbor

    Ann Arbor, Michigan, 48106

  • ThedaCare Regional Cancer Center

    Appleton, Wisconsin, 54911

  • PCR Oncology

    Arroyo Grande, California, 93420

  • Messino Cancer Centers

    Asheville, North Carolina, 28806

  • Duluth Clinic Ashland

    Ashland, Wisconsin, 54806

  • Northwest Wisconsin Cancer Center

    Ashland, Wisconsin, 54806

  • Emory University Hospital Midtown

    Atlanta, Georgia, 30308

  • Emory University Hospital/Winship Cancer Institute

    Atlanta, Georgia, 30322

  • Emory Saint Joseph's Hospital

    Atlanta, Georgia, 30342

  • Sutter Auburn Faith Hospital

    Auburn, California, 95602

  • Sutter Cancer Centers Radiation Oncology Services-Auburn

    Auburn, California, 95603

  • Rocky Mountain Cancer Centers-Aurora

    Aurora, Colorado, 80012

  • The Medical Center of Aurora

    Aurora, Colorado, 80012

  • Rush-Copley Medical Center

    Aurora, Illinois, 60504

  • UM Sylvester Comprehensive Cancer Center at Aventura

    Aventura, Florida, 33180

  • UH Seidman Cancer Center at UH Avon Health Center

    Avon, Ohio, 44011

  • Saint Alphonsus Cancer Care Center-Baker City

    Baker City, Oregon, 97814

  • Mercy Oncology and Hematology - Clayton-Clarkson

    Ballwin, Missouri, 63011

  • MedStar Franklin Square Medical Center/Weinberg Cancer Institute

    Baltimore, Maryland, 21237

  • Johns Hopkins University/Sidney Kimmel Cancer Center

    Baltimore, Maryland, 21287

  • Bronson Battle Creek

    Battle Creek, Michigan, 49017

  • Essentia Health - Baxter Clinic

    Baxter, Minnesota, 56425

  • UHHS-Chagrin Highlands Medical Center

    Beachwood, Ohio, 44122

  • Overlake Medical Center

    Bellevue, Washington, 98004

  • PeaceHealth Saint Joseph Medical Center

    Bellingham, Washington, 98225

  • Sanford Joe Lueken Cancer Center

    Bemidji, Minnesota, 56601

  • Saint Charles Health System

    Bend, Oregon, 97701

  • Alta Bates Summit Medical Center-Herrick Campus

    Berkeley, California, 94704

  • Lehigh Valley Hospital - Muhlenberg

    Bethlehem, Pennsylvania, 18017

  • Billings Clinic Cancer Center

    Billings, Montana, 59101

  • Saint Vincent Healthcare

    Billings, Montana, 59101

  • Saint Vincent Frontier Cancer Center

    Billings, Montana, 59102

  • University of Alabama at Birmingham Cancer Center

    Birmingham, Alabama, 35233

  • Sanford Bismarck Medical Center

    Bismarck, North Dakota, 58501

  • Illinois CancerCare-Bloomington

    Bloomington, Illinois, 61704

  • Saint Joseph's/Candler - Bluffton Campus

    Bluffton, South Carolina, 29910

  • Saint Alphonsus Cancer Care Center-Boise

    Boise, Idaho, 83706

  • Saint Luke's Cancer Institute - Boise

    Boise, Idaho, 83712

  • Central Care Cancer Center - Bolivar

    Bolivar, Missouri, 65613

  • Parkland Health Center-Bonne Terre

    Bonne Terre, Missouri, 63628

  • Massachusetts General Hospital Cancer Center

    Boston, Massachusetts, 02114

  • Dana-Farber Cancer Institute

    Boston, Massachusetts, 02215

  • Boulder Community Foothills Hospital

    Boulder, Colorado, 80303

  • Rocky Mountain Cancer Centers-Boulder

    Boulder, Colorado, 80304

  • Bozeman Health Deaconess Hospital

    Bozeman, Montana, 59715

  • Essentia Health Saint Joseph's Medical Center

    Brainerd, Minnesota, 56401

  • Cox Cancer Center Branson

    Branson, Missouri, 65616

  • Lafayette Family Cancer Center-EMMC

    Brewer, Maine, 04412

  • Trinity Health IHA Medical Group Hematology Oncology - Brighton

    Brighton, Michigan, 48114

  • Trinity Health Medical Center - Brighton

    Brighton, Michigan, 48114

  • 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

  • Fairview Ridges Hospital

    Burnsville, Minnesota, 55337

  • Minnesota Oncology - Burnsville

    Burnsville, Minnesota, 55337

  • Saint James Community Hospital and Cancer Treatment Center

    Butte, Montana, 59701

  • Saint Alphonsus Cancer Care Center-Caldwell

    Caldwell, Idaho, 83605

  • Cambridge Medical Center

    Cambridge, Minnesota, 55008

  • Sutter Cancer Centers Radiation Oncology Services-Cameron Park

    Cameron Park, California, 95682

  • Illinois CancerCare-Canton

    Canton, Illinois, 61520

  • Trinity Health IHA Medical Group Hematology Oncology - Canton

    Canton, Michigan, 48188

  • Trinity Health Medical Center - Canton

    Canton, Michigan, 48188

  • Mercy Cancer Center - Cape Girardeau

    Cape Girardeau, Missouri, 63703

  • Saint Francis Medical Center

    Cape Girardeau, Missouri, 63703

  • Memorial Hospital of Carbondale

    Carbondale, Illinois, 62902

  • Caro Cancer Center

    Caro, Michigan, 48723

  • Saint Anthony Regional Hospital

    Carroll, Iowa, 51401

  • Carson Tahoe Regional Medical Center

    Carson City, Nevada, 89703

  • SIH Cancer Institute

    Carterville, Illinois, 62918

  • Illinois CancerCare-Carthage

    Carthage, Illinois, 62321

  • Eden Hospital Medical Center

    Castro Valley, California, 94546

  • Mercy Hospital

    Cedar Rapids, Iowa, 52403

  • Oncology Associates at Mercy Medical Center

    Cedar Rapids, Iowa, 52403

  • Rocky Mountain Cancer Centers - Centennial

    Centennial, Colorado, 80112

  • Centralia Oncology Clinic

    Centralia, Illinois, 62801

  • Saint Mary's Hospital

    Centralia, Illinois, 62801

  • Providence Regional Cancer System-Centralia

    Centralia, Washington, 98531

  • Geauga Hospital

    Chardon, Ohio, 44024

  • Medical University of South Carolina

    Charleston, South Carolina, 29425

  • University of Virginia Cancer Center

    Charlottesville, Virginia, 22908

  • Chelsea Hospital

    Chelsea, Michigan, 48118

  • Trinity Health IHA Medical Group Hematology Oncology - Chelsea Hospital

    Chelsea, Michigan, 48118

  • Cheyenne Regional Medical Center-West

    Cheyenne, Wyoming, 82001

  • Northwestern University

    Chicago, Illinois, 60611

  • Rush MD Anderson Cancer Center

    Chicago, Illinois, 60612

  • University of Chicago Comprehensive Cancer Center

    Chicago, Illinois, 60637

  • University of Cincinnati Cancer Center-UC Medical Center

    Cincinnati, Ohio, 45219

  • Siteman Cancer Center at Saint Peters Hospital

    City of Saint Peters, Missouri, 63376

  • Clackamas Radiation Oncology Center

    Clackamas, Oregon, 97015

  • Providence Cancer Institute Clackamas Clinic

    Clackamas, Oregon, 97015

  • Hematology Oncology Consultants-Clarkston

    Clarkston, Michigan, 48346

  • Newland Medical Associates-Clarkston

    Clarkston, Michigan, 48346

  • Wake Forest University at Clemmons

    Clemmons, North Carolina, 27012

  • Case Western Reserve University

    Cleveland, Ohio, 44106

  • MetroHealth Medical Center

    Cleveland, Ohio, 44109

  • Cleveland Clinic Foundation

    Cleveland, Ohio, 44195

  • Billings Clinic-Cody

    Cody, Wyoming, 82414

  • Kootenai Health - Coeur d'Alene

    Coeur d'Alene, Idaho, 83814

  • Coffeyville Regional Medical Center

    Coffeyville, Kansas, 67337

  • Ohio State University Comprehensive Cancer Center

    Columbus, Ohio, 43210

  • Mercy Hospital

    Coon Rapids, Minnesota, 55433

  • Bay Area Hospital

    Coos Bay, Oregon, 97420

  • UM Sylvester Comprehensive Cancer Center at Coral Gables

    Coral Gables, Florida, 33146

  • Heartland Oncology and Hematology LLP

    Council Bluffs, Iowa, 51503

  • Methodist Jennie Edmundson Hospital

    Council Bluffs, Iowa, 51503

  • Siteman Cancer Center at West County Hospital

    Creve Coeur, Missouri, 63141

  • UT Southwestern/Simmons Cancer Center-Dallas

    Dallas, Texas, 75390

  • Carle at The Riverfront

    Danville, Illinois, 61832

  • Geisinger Medical Center

    Danville, Pennsylvania, 17822

  • Sutter Davis Hospital

    Davis, California, 95616

  • Cancer Care Specialists of Illinois - Decatur

    Decatur, Illinois, 62526

  • Decatur Memorial Hospital

    Decatur, Illinois, 62526

  • Essentia Health - Deer River Clinic

    Deer River, Minnesota, 56636

  • UM Sylvester Comprehensive Cancer Center at Deerfield Beach

    Deerfield Beach, Florida, 33442

  • 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

  • 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

  • Iowa Lutheran Hospital

    Des Moines, Iowa, 50316

  • Henry Ford Health Saint John Hospital

    Detroit, Michigan, 48236

  • Essentia Health Saint Mary's - Detroit Lakes Clinic

    Detroit Lakes, Minnesota, 56501

  • Illinois CancerCare-Dixon

    Dixon, Illinois, 61021

  • Essentia Health Cancer Center

    Duluth, Minnesota, 55805

  • Essentia Health Saint Mary's Medical Center

    Duluth, Minnesota, 55805

  • Miller-Dwan Hospital

    Duluth, Minnesota, 55805

  • Saint Luke's Hospital of Duluth

    Duluth, Minnesota, 55805

  • Duke University Medical Center

    Durham, North Carolina, 27710

  • Henry Ford River District Hospital

    East China Township, Michigan, 48054

  • Pocono Medical Center

    East Stroudsburg, Pennsylvania, 18301

  • Marshfield Medical Center-EC Cancer Center

    Eau Claire, Wisconsin, 54701

  • Mayo Clinic Health System-Eau Claire Clinic

    Eau Claire, Wisconsin, 54701

  • Fairview Southdale Hospital

    Edina, Minnesota, 55435

  • Swedish Cancer Institute-Edmonds

    Edmonds, Washington, 98026

  • Carle Physician Group-Effingham

    Effingham, Illinois, 62401

  • Crossroads Cancer Center

    Effingham, Illinois, 62401

  • Essentia Health - Ely Clinic

    Ely, Minnesota, 55731

  • Walter Knox Memorial Hospital

    Emmett, Idaho, 83617

  • 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

  • Illinois CancerCare-Eureka

    Eureka, Illinois, 61530

  • Providence Regional Cancer Partnership

    Everett, Washington, 98201

  • Fairbanks Memorial Hospital

    Fairbanks, Alaska, 99701

  • Inova Schar Cancer Institute

    Fairfax, Virginia, 22031

  • Essentia Health Cancer Center-South University Clinic

    Fargo, North Dakota, 58103

  • Sanford South University Medical Center

    Fargo, North Dakota, 58103

  • Sanford Medical Center Fargo

    Fargo, North Dakota, 58104

  • Sanford Broadway Medical Center

    Fargo, North Dakota, 58122

  • Sanford Roger Maris Cancer Center

    Fargo, North Dakota, 58122

  • Parkland Health Center - Farmington

    Farmington, Missouri, 63640

  • UPMC Cancer Center at UPMC Horizon

    Farrell, Pennsylvania, 16121

  • Lake Region Healthcare Corporation-Cancer Care

    Fergus Falls, Minnesota, 56537

  • Cancer Hematology Centers - Flint

    Flint, Michigan, 48503

  • Genesee Hematology Oncology PC

    Flint, Michigan, 48503

  • Genesys Hurley Cancer Institute

    Flint, Michigan, 48503

  • Hurley Medical Center

    Flint, Michigan, 48503

  • UI Healthcare Mission Cancer and Blood - Fort Dodge

    Fort Dodge, Iowa, 50501

  • Holy Cross Hospital

    Fort Lauderdale, Florida, 33308

  • Regional Cancer Center-Lee Memorial Health System

    Fort Myers, Florida, 33905

  • Mercy Hospital Fort Smith

    Fort Smith, Arkansas, 72903

  • Essentia Health - Fosston

    Fosston, Minnesota, 56542

  • Palo Alto Medical Foundation-Fremont

    Fremont, California, 94538

  • Unity Hospital

    Fridley, Minnesota, 55432

  • Saint Luke's Cancer Institute - Fruitland

    Fruitland, Idaho, 83619

  • Gibbs Cancer Center-Gaffney

    Gaffney, South Carolina, 29341

  • Illinois CancerCare-Galesburg

    Galesburg, Illinois, 61401

  • Western Illinois Cancer Treatment Center

    Galesburg, Illinois, 61401

  • Central Care Cancer Center - Garden City

    Garden City, Kansas, 67846

  • Tidelands Georgetown Memorial Hospital

    Georgetown, South Carolina, 29440

  • Lutheran Hospital - Cancer Centers of Colorado

    Golden, Colorado, 80401

  • National Jewish Health-Western Hematology Oncology

    Golden, Colorado, 80401

  • Altru Cancer Center

    Grand Forks, North Dakota, 58201

  • Saint Mary's Hospital and Regional Medical Center

    Grand Junction, Colorado, 81501

  • Corewell Health Grand Rapids Hospitals - Butterworth Hospital

    Grand Rapids, Michigan, 49503

  • Corewell Health Grand Rapids Hospitals - Helen DeVos Children's Hospital

    Grand Rapids, Michigan, 49503

  • Trinity Health Grand Rapids Hospital

    Grand Rapids, Michigan, 49503

  • Central Care Cancer Center - Great Bend

    Great Bend, Kansas, 67530

  • Benefis Sletten Cancer Institute

    Great Falls, Montana, 59405

  • Great Falls Clinic

    Great Falls, Montana, 59405

  • Banner North Colorado Medical Center

    Greeley, Colorado, 80631

  • Bellin Memorial Hospital

    Green Bay, Wisconsin, 54301

  • Saint Vincent Hospital Cancer Center Green Bay

    Green Bay, Wisconsin, 54301

  • Saint Vincent Hospital Cancer Center at Saint Mary's

    Green Bay, Wisconsin, 54303

  • UPMC Cancer Centers - Arnold Palmer Pavilion

    Greensburg, Pennsylvania, 15601

  • East Carolina University

    Greenville, North Carolina, 27834

  • Saint Francis Hospital

    Greenville, South Carolina, 29601

  • Saint Francis Cancer Center

    Greenville, South Carolina, 29607

  • Gibbs Cancer Center-Pelham

    Greer, South Carolina, 29651

  • Henry Ford Saint John Hospital - Academic

    Grosse Pointe Woods, Michigan, 48236

  • Henry Ford Saint John Hospital - Breast

    Grosse Pointe Woods, Michigan, 48236

  • Henry Ford Saint John Hospital - Van Elslander

    Grosse Pointe Woods, Michigan, 48236

  • Hackensack University Medical Center

    Hackensack, New Jersey, 07601

  • HaysMed

    Hays, Kansas, 67601

  • Essentia Health-Hayward Clinic

    Hayward, Wisconsin, 54843

  • Geisinger Medical Center-Cancer Center Hazleton

    Hazleton, Pennsylvania, 18201

  • Lehigh Valley Hospital-Hazleton

    Hazleton, Pennsylvania, 18201

  • Saint Peter's Community Hospital

    Helena, Montana, 59601

  • Cancer and Blood Specialists-Henderson

    Henderson, Nevada, 89052

  • Comprehensive Cancer Centers of Nevada - Henderson

    Henderson, Nevada, 89052

  • Comprehensive Cancer Centers of Nevada-Horizon Ridge

    Henderson, Nevada, 89052

  • Las Vegas Cancer Center-Henderson

    Henderson, Nevada, 89052

  • Comprehensive Cancer Centers of Nevada-Southeast Henderson

    Henderson, Nevada, 89074

  • Las Vegas Urology - Green Valley

    Henderson, Nevada, 89074

  • Las Vegas Urology - Pebble

    Henderson, Nevada, 89074

  • Oncology Las Vegas - Henderson

    Henderson, Nevada, 89074

  • Urology Specialists of Nevada - Green Valley

    Henderson, Nevada, 89074

  • Margaret R Pardee Memorial Hospital

    Hendersonville, North Carolina, 28791

  • Penn State Milton S Hershey Medical Center

    Hershey, Pennsylvania, 17033-0850

  • Essentia Health Hibbing Clinic

    Hibbing, Minnesota, 55746

  • South Carolina Cancer Specialists PC

    Hilton Head Island, South Carolina, 29926-3827

  • Keck Medicine of USC Huntington Beach

    Huntington Beach, California, 92648

  • Indiana University/Melvin and Bren Simon Cancer Center

    Indianapolis, Indiana, 46202

  • Essentia Health - International Falls Clinic

    International Falls, Minnesota, 56649

  • Swedish Cancer Institute-Issaquah

    Issaquah, Washington, 98029

  • Essentia Health - Jamestown Clinic

    Jamestown, North Dakota, 58401

  • MU Health Care Goldschmidt Cancer Center

    Jefferson City, Missouri, 65109

  • Freeman Health System

    Joplin, Missouri, 64804

  • Mercy Hospital Joplin

    Joplin, Missouri, 64804

  • Bronson Methodist Hospital

    Kalamazoo, Michigan, 49007

  • West Michigan Cancer Center

    Kalamazoo, Michigan, 49007

  • Beacon Kalamazoo Cancer Center

    Kalamazoo, Michigan, 49009

  • Beacon Kalamazoo

    Kalamazoo, Michigan, 49048

  • Logan Health Medical Center

    Kalispell, Montana, 59901

  • University of Kansas Cancer Center

    Kansas City, Kansas, 66160

  • University Health Truman Medical Center

    Kansas City, Missouri, 64108

  • University of Kansas Cancer Center - North

    Kansas City, Missouri, 64154

  • Kadlec Clinic Hematology and Oncology

    Kennewick, Washington, 99336

  • Illinois CancerCare-Kewanee Clinic

    Kewanee, Illinois, 61443

  • Kingman Regional Medical Center

    Kingman, Arizona, 86401

  • University of Tennessee - Knoxville

    Knoxville, Tennessee, 37920

  • Gundersen Lutheran Medical Center

    La Crosse, Wisconsin, 54601

  • Providence Regional Cancer System-Lacey

    Lacey, Washington, 98503

  • Good Samaritan Hospital - Cancer Centers of Colorado

    Lafayette, Colorado, 80026

  • Northwestern Medicine Lake Forest Hospital

    Lake Forest, Illinois, 60045

  • Rocky Mountain Cancer Centers-Lakewood

    Lakewood, Colorado, 80228

  • University of Michigan Health - Sparrow Lansing

    Lansing, Michigan, 48912

  • Las Vegas Urology - Pecos

    Las Vegas, Nevada, 89074

  • Desert West Surgery

    Las Vegas, Nevada, 89102

  • OptumCare Cancer Care at Charleston

    Las Vegas, Nevada, 89102

  • University Medical Center of Southern Nevada

    Las Vegas, Nevada, 89102

  • Hope Cancer Care of Nevada

    Las Vegas, Nevada, 89103

  • Cancer and Blood Specialists-Shadow

    Las Vegas, Nevada, 89106

  • Radiation Oncology Centers of Nevada Central

    Las Vegas, Nevada, 89106

  • Urology Specialists of Nevada - Central

    Las Vegas, Nevada, 89106

  • HealthCare Partners Medical Group Oncology/Hematology-Maryland Parkway

    Las Vegas, Nevada, 89109

  • Sunrise Hospital and Medical Center

    Las Vegas, Nevada, 89109

  • HealthCare Partners Medical Group Oncology/Hematology-San Martin

    Las Vegas, Nevada, 89113

  • Las Vegas Prostate Cancer Center

    Las Vegas, Nevada, 89113

  • Las Vegas Urology - Sunset

    Las Vegas, Nevada, 89113

  • Urology Specialists of Nevada - Southwest

    Las Vegas, Nevada, 89113

  • Radiation Oncology Centers of Nevada Southeast

    Las Vegas, Nevada, 89119

  • Ann M Wierman MD LTD

    Las Vegas, Nevada, 89128

  • Cancer and Blood Specialists-Tenaya

    Las Vegas, Nevada, 89128

  • Comprehensive Cancer Centers of Nevada - Northwest

    Las Vegas, Nevada, 89128

  • HealthCare Partners Medical Group Oncology/Hematology-Tenaya

    Las Vegas, Nevada, 89128

  • Las Vegas Urology - Cathedral Rock

    Las Vegas, Nevada, 89128

  • Las Vegas Urology - Smoke Ranch

    Las Vegas, Nevada, 89128

  • Oncology Las Vegas - Tenaya

    Las Vegas, Nevada, 89128

  • OptumCare Cancer Care at MountainView

    Las Vegas, Nevada, 89128

  • Urology Specialists of Nevada - Northwest

    Las Vegas, Nevada, 89128

  • Alliance for Childhood Diseases/Cure 4 the Kids Foundation

    Las Vegas, Nevada, 89135

  • Comprehensive Cancer Centers of Nevada - Town Center

    Las Vegas, Nevada, 89144

  • Comprehensive Cancer Centers of Nevada-Summerlin

    Las Vegas, Nevada, 89144

  • Summerlin Hospital Medical Center

    Las Vegas, Nevada, 89144

  • Las Vegas Cancer Center-Medical Center

    Las Vegas, Nevada, 89148-2405

  • Comprehensive Cancer Centers of Nevada

    Las Vegas, Nevada, 89148

  • HealthCare Partners Medical Group Oncology/Hematology-Centennial Hills

    Las Vegas, Nevada, 89149

  • Comprehensive Cancer Centers of Nevada - Central Valley

    Las Vegas, Nevada, 89169

  • University Cancer Center

    Las Vegas, Nevada, 89169

  • OptumCare Cancer Care at Fort Apache

    Las Vegas, Nevada, 89183

  • Lawrence Memorial Hospital

    Lawrence, Kansas, 66044

  • Cancer Centers of Southwest Oklahoma Research

    Lawton, Oklahoma, 73505

  • Geisinger Medical Oncology-Lewisburg

    Lewisburg, Pennsylvania, 17837

  • Lewistown Hospital

    Lewistown, Pennsylvania, 17044

  • Rocky Mountain Cancer Centers-Littleton

    Littleton, Colorado, 80120

  • Cooperman Barnabas Medical Center

    Livingston, New Jersey, 07039

  • Hope Cancer Clinic

    Livonia, Michigan, 48154

Other trials in United States

About this study

Official title: STAMP: Surgically Treated Adjuvant Merkel Cell Carcinoma With Pembrolizumab, a Phase III Trial

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.

Read the detailed description

PRIMARY OBJECTIVE:

  1. To compare recurrence free survival (RFS) and overall survival (OS) as co-primary endpoints across the two arms.

SECONDARY OBJECTIVES:

  1. To evaluate adverse events. II. To evaluate distant metastasis free survival (DMFS). III. To evaluate the impact of radiation on clinical outcomes (OS, RFS, DMFS).

OUTLINE: Patients are randomized to 1 of 2 arms.

ARM A: Patients receive pembrolizumab intravenously (IV) over 30 minutes on day 1 of each cycle. Treatment repeats every 21 days for up to 17 cycles in the absence of disease progression or unacceptable toxicity. Patients may also undergo standard of care radiation therapy within 14 days of day 1, cycle 1. Patients undergo positron emission tomography (PET)-computed tomography (CT), CT, or magnetic resonance imaging (MRI) throughout the trial. Patients may also undergo blood and utine sample collection as clinically indicated at the discretion of the treating investigator.

ARM B: Patients receive standard of care observation every 3 months for 1 year, and then every 6 months for 5 years. Patients may also undergo standard of care radiation therapy within 14 days of day 1, cycle 1. Patients undergo PET-CT, CT, or MRI throughout the trial. Patients may also undergo blood and urine sample collection as clinically indicated at the discretion of the treating investigator.

After completion of study treatment, patients are followed up every 3-6 months for 5 years from the date of registration.

Being tested
Best Practice, Biospecimen Collection, Computed Tomography, Magnetic Resonance Imaging, Pembrolizumab

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Best PracticeOther

    Also called standard of care, standard therapy

    Receive standard of care observation

  • Biospecimen CollectionProcedure or surgery

    Also called Biological Sample Collection, Biospecimen Collected, Sample Collection, Specimen Collection

    Undergo blood and urine sample collection

  • Computed TomographyProcedure or surgery

    Also called CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography

    Undergo PET-CT or CT

  • Magnetic Resonance ImagingProcedure or surgery

    Also called Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging Scan

    Undergo MRI

  • PembrolizumabBiological

    Also called BCD-201, GME 751, GME751, Keytruda

    Given IV

  • Positron Emission TomographyProcedure or surgery

    Also called Medical Imaging, Positron Emission Tomography, PET, PET Scan, Positron emission tomography (procedure)

    Undergo PET-CT

  • Radiation TherapyRadiation

    Also called Cancer Radiotherapy, Energy Type, ENERGY_TYPE, Irradiate

    Undergo radiation therapy

Study groups in NCT03712605
Study groupRoleWhat they receive
Arm A (pembrolizumab, radiation therapy)ExperimentalPatients receive pembrolizumab IV over 30 minutes on day 1. Treatment repeats every 21 days for up to 17 cycles in the absence of disease progression or unacceptable toxicity. Patients may also undergo standard of care radiation therapy within 14 days of day 1, cycle 1. Patients undergo PET-CT, CT, or MRI throughout the trial. Patients may also undergo blood and urine sample collection as clinically indicated at the discretion of the treating investigator.
Receives: Procedure: Biospecimen Collection; Procedure: Computed Tomography; Procedure: Magnetic Resonance Imaging; Biological: Pembrolizumab; Procedure: Positron Emission Tomography; Radiation: Radiation Therapy
Arm B (standard of care observation, radiation therapy)Active comparatorPatients receive standard of care observation every 3 months for 1 year, and then every 6 months for 5 years. Patients may also undergo standard of care radiation therapy within 14 days of day 1, cycle 1. Patients undergo PET-CT, CT, or MRI throughout the trial. Patients may also undergo blood and urine sample collection as clinically indicated at the discretion of the treating investigator.
Receives: Other: Best Practice; Procedure: Biospecimen Collection; Procedure: Computed Tomography; Procedure: Magnetic Resonance Imaging; Procedure: Positron Emission Tomography; Radiation: Radiation Therapy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Recurrence free survival (RFS)

    An intention-to-treat (ITT) analysis using the stratified log-rank test will be performed to compare overall survival (OS) and RFS between the two arms.

    Measured: From randomization until disease recurrence or death from any cause; assessed up to 5 years

  2. OS

    An ITT analysis using the stratified log-rank test will be performed to compare OS and RFS between the two arms.

    Measured: From randomization until death, assessed up to 5 years

Secondary outcomes (4)

  1. Impact of radiation therapy on RFS

    RFS in each arm will be evaluated by radiation treatment status (radiation versus [vs.] no radiation therapy). The analysis will be a planned post-hoc analysis with primary goal of examining whether use of post-operative radiation therapy is associated with RFS. Cox multivariate models for RFS will be developed to evaluate the impact of radiation therapy while adjusting for pembrolizumab treatment and clinical/ pathological factors. The treatment fields and dose data will also be included in the Cox model as covariates. Secondary analyses for radiation therapy (RT) will examine factors associated with use of post-operative RT. Multivariate logistic regression models (radiation therapy vs. no radiation therapy) will be developed to evaluate the associations with demographic, clinical/pathologic, and treatment-related factors and pembrolizumab treatment.

    Measured: Up to 5 years

  2. Impact of radiation therapy on OS

    OS in each arm will be evaluated by radiation treatment status (radiation vs. no radiation therapy). The analysis will be a planned post-hoc analysis with primary goal of examining whether use of post-operative radiation therapy is associated with OS. Cox multivariate models for OS will be developed to evaluate the impact of radiation therapy while adjusting for pembrolizumab treatment and clinical/ pathological factors. The treatment fields and dose data will also be included in the Cox model as covariates. Secondary analyses for radiation therapy will examine factors associated with the the use of post-operative RT. Multivariate logistic regression models (radiation therapy vs. no radiation therapy) will be developed to evaluate the associations with demographic, clinical/pathologic, and treatment-related factors and pembrolizumab treatment.

    Measured: Up to 5 years

  3. Impact of radiation therapy on distant metastasis free survival (DMFS)

    DMFS will be evaluated by treatment arms. If there is no distant metastasis, cases will be censored at the time of last assessment.

    Measured: From randomization to distant metastasis, assessed up to 5 years

  4. Incidence of adverse events

    Measured per Common Terminology Criteria for Adverse Events version 5.0. Adverse events from each arm will be summarized and compared using Fisher's exact test.

    Measured: Up to 5 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Oct 2018
  2. Study start15 Nov 2018
  3. Primary completion31 Dec 2026 (estimated)
  4. Study completion31 Dec 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
280 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03712605
Sponsor's protocol ID
NCI-2018-02217
Other IDs
NCI-2018-02217, EA6174, EA6174, U10CA180820
Status last verified
May 2026
First submitted
17 Oct 2018
Last updated
26 Oct 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Best Practice, Biospecimen Collection and Computed Tomography in people with Pathologic Stage I Cutaneous Merkel Cell Carcinoma AJCC v8 and Pathologic Stage II Cutaneous Merkel Cell Carcinoma AJCC v8, run by National Cancer Institute (NCI) at 552 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 27 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 26 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 552 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Recurrence free survival (RFS) (time frame: From randomization until disease recurrence or death from any cause; assessed up to 5 years). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03712605.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Oct 2026.

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