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Testing What Happens When an Immunotherapy Drug (Pembrolizumab) is Given by Itself Compared to the Usual Treatment of Chemotherapy With Radiation After Surgery for Recurrent Head and Neck Squamous Cell Carcinoma

  • PhasePhase 2
  • StatusRecruiting
  • Planned enrollment188 people
  • Recruiting US sites119
  • SponsorNational Cancer Institute (NCI)
  • RegistryNCT04671667

Recruitment re-checked on ClinicalTrials.gov Oct 30, 2026. Public record; not medical advice.

Testing What Happens When an Immunotherapy Drug (Pembrolizumab) is Given by Itself Compared to the Usual Treatment of Chemotherapy With Radiation After Surgery for Recurrent Head and Neck Squamous Cell Carcinoma: a one-minute explainerNCT046716671 min

Eligibility

Who can join

The film gives the main points. The full list below is copied from the registry; the study team makes the final decision.

  • Age18 Years to 79 Years
  • SexAll
  • Healthy volunteersNo

You may be able to join if

  • Patient must be between 18 and 79 years of age
  • Patient must have locoregionally recurrent or second primary HNSCC (oral cavity, oropharynx, larynx, hypopharynx) in a previously radiated field
  • Patient must have undergone surgery with gross total resection and must be randomized within 8 weeks of surgery
  • Patients must have high risk disease defined as:
  • Positive margins and/or extra nodal extension (ENE)
  • Positive margins are defined as malignancy at or within 1 mm of the margin. High grade dysplasia (i.e. carcinoma in situ) at the margin is also considered positive
  • ENE may be either gross or microscopic
  • Patient must have a PD-L1 Combined Positive Score (CPS) >= 1 in a Clinical Laboratory Improvement Act (CLIA) certified laboratory. Testing can be done locally as long as it is done in a CLIA certified laboratory. This testing must be on the tumor specimen from the resection of the patient's recurrent or second primary HNSCC
  • Patient must have had prior radiation to the area of recurrent or second primary tumor. This is defined as > 50% of the presurgical tumor volume having previously received a dose of > 45 Gy as determined by the treating radiation oncologist
  • Patient must have completed prior radiation a minimum of 6 months prior to randomization
  • Patient must not have any evidence of distant disease based on baseline imaging done within 28 days prior to randomization
  • Patient must not have received anti-PD-1/PD-L1 therapy for recurrent disease. If the patient received anti-PD-1/PD-L1 therapy as part of initial upfront curative intent treatment (either as part of definitive non-surgical therapy or in the adjuvant setting) in the past, the last dosage of anti-PD-1/PD-L1 therapy must have been given greater than one year prior to randomization
  • Patient must have an Eastern Cooperative Oncology Group (ECOG) performance status 0-1
  • Patient must have the ability to understand and the willingness to sign a written informed consent document. Patients with impaired decision-making capacity (IDMC) who have a legally authorized representative (LAR) or caregiver and/or family member available will also be considered eligible
  • Patient must not be pregnant or breast-feeding due to the potential harm to an unborn fetus and possible risk for adverse events in nursing infants with the treatment regimens being used. All patients of childbearing potential must have a blood test or urine study within 14 days prior to randomization to rule out pregnancy. A urine or serum pregnancy test must be repeated within 72 hours prior to receiving the first dose of pembrolizumab or chemotherapy if the test done for eligibility/randomization is done outside of this 72 hour window. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required. A patient of childbearing potential is someone, regardless of 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)
  • Patient must not expect to conceive or father children by using by using accepted and effective method(s) of contraception or by abstaining from sexual intercourse while on study treatment, and continue for 120 days after the last dose of study treatment
  • Absolute neutrophil count (ANC) >= 1,500/mcL (obtained =< 28 days prior to protocol randomization)
  • Platelets >= 100,000/mcL (obtained =< 28 days prior to protocol randomization)
  • Total bilirubin =< 1.5 x institutional upper limit of normal (ULN) (obtained =< 28 days prior to protocol randomization)
  • Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase [SGPT]) =< 3.0 x institutional ULN (obtained =< 28 days prior to protocol randomization)
  • Creatinine clearance > 30 ml/min using the Cockcroft-Gault formula (obtained =< 28 days prior to protocol randomization)
  • Patient must not have a current active infection that requires systemic treatment at time of randomization
  • Patient must not have a history of non-infectious pneumonitis requiring steroids within 3 years prior to randomization
  • Patient must not have a history of solid organ transplant or stem cell transplant
  • Patient must not be on immunosuppressive medication within 7 days prior to randomization, EXCEPT for the following: a) intranasal, inhaled, topical steroids, or local steroid injection (e.g., intra-articular injection); b) systemic corticosteroids at physiologic doses =< 10 mg/day of prednisone or equivalent; c) steroids as premedication for hypersensitivity reactions (e.g., CT scan premedication)
  • Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional classification. Patients with New York Heart Association class III or IV heart failure are not eligible
  • Patient must not have received a live vaccine within 30 days prior to the first dose of study drug. Examples of live vaccines include, but are not limited to, the following: measles, mumps, rubella, varicella/zoster (chicken pox), yellow fever, rabies, Bacillus Calmette-Guerin (BCG), and typhoid vaccine. Seasonal influenza vaccines for injection are generally killed virus vaccines and are allowed; however, intranasal influenza vaccines (e.g., FluMist [registered trademark]) are live attenuated vaccines and are not allowed
  • Patient must not have severe hypersensitivity (>= grade 3) to pembrolizumab and/or any of its excipients
  • Patient must not have an active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment and is allowed
  • Patient must not have a known psychiatric or substance abuse disorder that would interfere with the participant's ability to cooperate with the requirements of the study
  • Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial as long as they have not been HIV-infected with a history of Kaposi sarcoma and/or multicentric Castleman disease
  • Patient must not have a known history of hepatitis B (defined as hepatitis B surface antigen [HBsAg] reactive) or known active hepatitis C virus (defined as HCV ribonucleic acid [RNA] [qualitative] is detected) infection
  • NOTE: No testing for hepatitis B and hepatitis C is required unless mandated by a local health authority

The treatment

How it is intended to work

This is how the treatment is meant to work. Whether it helps, and how safe it is, is what this trial is testing.

Treatments listed in the registry

  • Carboplatin (Drug): Given IV
  • Cisplatin (Drug): Given IV
  • Computed Tomography (Procedure): Undergo CT
  • Intensity-Modulated Radiation Therapy (Radiation): Undergo IMRT
  • Magnetic Resonance Imaging (Procedure): Undergo MRI
  • Pembrolizumab (Biological): Given IV
  • Proton Beam Radiation Therapy (Radiation): Undergo PBRT

The study

Treatment groups

Randomized · Parallel · masking: None

Arm B (cisplatin, carboplatin, IMRT, PBRT) (Active Comparator)

Patients receive cisplatin or carboplatin IV on day 1. Treatment repeats every 7 days for 6 cycles in the absence of disease progression or unacceptable toxicity. Patients also undergo IMRT or PBRT QD for a total of 30 fractions in the absence of disease progression or unacceptable toxicity. Patients also undergo CT or MRI throughout the trial.

Arm C (pembrolizumab) (Experimental)

Patients receive pembrolizumab IV over 30 minutes on day 1. Treatment repeats every 6 weeks for 9 cycles in the absence of disease progression or unacceptable toxicity. Patients also undergo CT or MRI throughout the trial.

What it involves

Procedures

As the registry describes them. Requirements to join, such as a tissue sample, are in the eligibility list above even when on-study procedures are optional. Ask the study team which steps apply to you.

  • CT scans: Part of the study plan
  • MRI: Part of the study plan
  • radiation: Part of the study plan

Goals

What the study measures

Main goals

  • Overall survival (OS) (From randomization to date of death from any cause, measured at 2 years)
  • Incidence of adverse events (Up to 5 years from date of registration)

Other goals

  • Disease free survival
  • PD-L1 expression

Planned enrollment: 188 (estimated).

Where

Recruiting US sites

  • University of Arkansas for Medical Sciences, Little Rock, Arkansas
  • Kaiser Permanente-Anaheim, Anaheim, California
  • Kaiser Permanente-Bellflower, Bellflower, California
  • Kaiser Permanente Los Angeles Medical Center, Los Angeles, California
  • Kaiser Permanente-Ontario, Ontario, California
  • Smilow Cancer Center/Yale-New Haven Hospital, New Haven, Connecticut
  • Yale University, New Haven, Connecticut
  • Smilow Cancer Hospital Care Center-Trumbull, Trumbull, Connecticut
  • Smilow Cancer Hospital Care Center - Waterford, Waterford, Connecticut
  • MedStar Washington Hospital Center, Washington D.C., District of Columbia
  • UM Sylvester Comprehensive Cancer Center at Coral Gables, Coral Gables, Florida
  • UM Sylvester Comprehensive Cancer Center at Deerfield Beach, Deerfield Beach, Florida
  • University of Miami Miller School of Medicine-Sylvester Cancer Center, Miami, Florida
  • UM Sylvester Comprehensive Cancer Center at Plantation, Plantation, Florida
  • Moffitt Cancer Center-International Plaza, Tampa, Florida
  • Moffitt Cancer Center - McKinley Campus, Tampa, Florida
  • Moffitt Cancer Center, Tampa, Florida
  • Moffitt Cancer Center at Wesley Chapel, Wesley Chapel, Florida
  • Emory Proton Therapy Center, Atlanta, Georgia
  • Emory University Hospital Midtown, Atlanta, Georgia
  • Northwestern University, Chicago, Illinois
  • John H Stroger Jr Hospital of Cook County, Chicago, Illinois
  • University of Illinois, Chicago, Illinois
  • Carle at The Riverfront, Danville, Illinois
  • Decatur Memorial Hospital, Decatur, Illinois
  • Northwestern Medicine Cancer Center Kishwaukee, DeKalb, Illinois
  • Carle Physician Group-Effingham, Effingham, Illinois
  • Crossroads Cancer Center, Effingham, Illinois
  • Northwestern Medicine Cancer Center Delnor, Geneva, Illinois
  • Carle Physician Group-Mattoon/Charleston, Mattoon, Illinois
  • Loyola University Medical Center, Maywood, Illinois
  • HSHS Saint Elizabeth's Hospital, O'Fallon, Illinois
  • Southern Illinois University School of Medicine, Springfield, Illinois
  • Springfield Clinic, Springfield, Illinois
  • Springfield Memorial Hospital, Springfield, Illinois
  • Carle Cancer Center, Urbana, Illinois
  • Northwestern Medicine Cancer Center Warrenville, Warrenville, Illinois
  • UI Health Care Mission Cancer and Blood - Ankeny Clinic, Ankeny, Iowa
  • UI Health Care Mission Cancer and Blood - West Des Moines Clinic, Clive, Iowa
  • Iowa Methodist Medical Center, Des Moines, Iowa
  • UI Health Care Mission Cancer and Blood - Des Moines Clinic, Des Moines, Iowa
  • Broadlawns Medical Center, Des Moines, Iowa
  • UI Health Care Mission Cancer and Blood - Laurel Clinic, Des Moines, Iowa
  • UI Health Care Mission Cancer and Blood - Waukee Clinic, Waukee, Iowa
  • University of Kentucky/Markey Cancer Center, Lexington, Kentucky
  • The James Graham Brown Cancer Center at University of Louisville, Louisville, Kentucky
  • UofL Health Medical Center Northeast, Louisville, Kentucky
  • University of Maryland/Greenebaum Cancer Center, Baltimore, Maryland
  • Central Maryland Radiation Oncology in Howard County, Columbia, Maryland
  • UM Baltimore Washington Medical Center/Tate Cancer Center, Glen Burnie, Maryland
  • Tufts Medical Center, Boston, Massachusetts
  • Sanford Joe Lueken Cancer Center, Bemidji, Minnesota
  • Mercy Hospital South, St Louis, Missouri
  • Mercy Hospital Saint Louis, St Louis, Missouri
  • Benefis Sletten Cancer Institute, Great Falls, Montana
  • Logan Health Medical Center, Kalispell, Montana
  • Community Medical Center, Missoula, Montana
  • Nebraska Cancer Specialists/Oncology Hematology West PC - MECC, Omaha, Nebraska
  • Nebraska Methodist Hospital, Omaha, Nebraska
  • Mount Sinai Union Square, New York, New York
  • Mount Sinai Chelsea, New York, New York
  • Mount Sinai Hospital, New York, New York
  • University of Rochester, Rochester, New York
  • Stony Brook University Medical Center, Stony Brook, New York
  • Montefiore Medical Center-Einstein Campus, The Bronx, New York
  • Montefiore Medical Center - Moses Campus, The Bronx, New York
  • Wilmot Cancer Institute at Webster, Webster, New York
  • UNC Lineberger Comprehensive Cancer Center, Chapel Hill, North Carolina
  • Cone Health Cancer Center, Greensboro, North Carolina
  • Annie Penn Memorial Hospital, Reidsville, North Carolina
  • Sanford Bismarck Medical Center, Bismarck, North Dakota
  • Sanford Roger Maris Cancer Center, Fargo, North Dakota
  • Miami Valley Hospital South, Centerville, Ohio
  • Cleveland Clinic Foundation, Cleveland, Ohio
  • Premier Blood and Cancer Center, Dayton, Ohio
  • Miami Valley Hospital North, Dayton, Ohio
  • Atrium Medical Center-Middletown Regional Hospital, Franklin, Ohio
  • Miami Valley Cancer Care and Infusion, Greenville, Ohio
  • Upper Valley Medical Center, Troy, Ohio
  • Cancer Centers of Southwest Oklahoma Research, Lawton, Oklahoma
  • University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
  • Providence Newberg Medical Center, Newberg, Oregon
  • Providence Portland Medical Center, Portland, Oregon
  • Providence Saint Vincent Medical Center, Portland, Oregon
  • UPMC Altoona, Altoona, Pennsylvania
  • Geisinger Medical Center, Danville, Pennsylvania
  • UPMC Hillman Cancer Center Erie, Erie, Pennsylvania
  • UPMC Cancer Center at UPMC Horizon, Farrell, Pennsylvania
  • IRMC Cancer Center, Indiana, Pennsylvania
  • Geisinger Medical Oncology-Lewisburg, Lewisburg, Pennsylvania
  • UPMC Hillman Cancer Center - New Castle, New Castle, Pennsylvania
  • Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
  • Fox Chase Cancer Center, Philadelphia, Pennsylvania
  • Jefferson Torresdale Hospital, Philadelphia, Pennsylvania
  • UPMC-Saint Margaret, Pittsburgh, Pennsylvania
  • UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania
  • UPMC-Passavant Hospital, Pittsburgh, Pennsylvania
  • Geisinger Wyoming Valley/Henry Cancer Center, Wilkes-Barre, Pennsylvania
  • UPMC Memorial, York, Pennsylvania
  • Medical University of South Carolina, Charleston, South Carolina
  • Avera Cancer Institute, Sioux Falls, South Dakota
  • Sanford USD Medical Center - Sioux Falls, Sioux Falls, South Dakota
  • Avera Cancer Institute at Yankton, Yankton, South Dakota
  • Vanderbilt University/Ingram Cancer Center, Nashville, Tennessee
  • VCU Massey Cancer Center at Stony Point, Richmond, Virginia
  • VCU Massey Comprehensive Cancer Center, Richmond, Virginia
  • Aspirus Cancer Care-Antigo-Volm Cancer Center, Antigo, Wisconsin
  • ThedaCare Regional Cancer Center, Appleton, Wisconsin
  • Saint Vincent Hospital Cancer Center Green Bay, Green Bay, Wisconsin
  • Saint Vincent Hospital Cancer Center at Saint Mary's, Green Bay, Wisconsin
  • Froedtert Menomonee Falls Hospital, Menomonee Falls, Wisconsin
  • Medical College of Wisconsin, Milwaukee, Wisconsin
  • Drexel Town Square Health Center, Oak Creek, Wisconsin
  • Aspirus Cancer Care-Rhinelander-James Beck Cancer Center, Rhinelander, Wisconsin
  • Aspirus Cancer Care - Stevens Point, Stevens Point, Wisconsin
  • Saint Vincent Hospital Cancer Center at Sturgeon Bay, Sturgeon Bay, Wisconsin
  • Aspirus Cancer Care-Wausau, Wausau, Wisconsin
  • Froedtert West Bend Hospital/Kraemer Cancer Center, West Bend, Wisconsin
  • Aspirus Cancer Care - Wisconsin Rapids, Wisconsin Rapids, Wisconsin

Site status as of Oct 30, 2026. Check the live record before contacting a site.

Sources

Where this comes from

Registry record reviewed as fetched Oct 30, 2026, last updated by the sponsor Oct 20, 2026. Public record; not medical advice.

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