A Trial to Learn if Fianlimab and Cemiplimab Are Safe and Work Better Than Anti-PD1 Alone in Adult Participants With Resectable Stage 3 or 4 Melanoma

NCT ID: NCT06190951

Last Updated: 2025-11-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

150 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-09-18

Study Completion Date

2031-04-23

Brief Summary

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This study is researching an experimental drug called REGN3767, also known as fianlimab (R3767), when combined with another medication called cemiplimab (each individually called a "study drug" or called "study drugs" when combined) compared with cemiplimab alone. These types of immunotherapy study drugs are collectively known as immune checkpoint inhibitors. Immunotherapies are treatments that use the immune system to recognize and kill cancer cells. The study is focused on participants with a type of skin cancer known as melanoma.

The objective of this study is to see if the combination of fianlimab and cemiplimab is an effective treatment compared to cemiplimab in participants with high-risk, resectable melanoma. Participants will receive treatment before surgery, undergo resection, and then will have the option to continue treatment after resection.

The study is looking at several other research questions, including:

* What side effects may happen from receiving the study drug(s).
* How much study drug(s) is in the blood at different times.
* Whether the body makes antibodies against the study drug(s) (which could make the drug less effective or could lead to side effects). Antibodies are proteins that are naturally found in the blood stream that fight infections.
* How administering the study drugs might improve quality of life.

Detailed Description

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Conditions

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Melanoma

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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Arm A

As described in the protocol

Group Type ACTIVE_COMPARATOR

cemiplimab

Intervention Type DRUG

Administered per the protocol

Placebo

Intervention Type DRUG

Administered per the protocol

Arm B

As described in the protocol

Group Type EXPERIMENTAL

Fixed Dose Combination (FDC) cemiplimab+fianlimab

Intervention Type DRUG

Or coadministration, depending on availability.

Arm C

As described in the protocol

Group Type EXPERIMENTAL

Fixed Dose Combination (FDC) cemiplimab+fianlimab

Intervention Type DRUG

Or coadministration, depending on availability.

Interventions

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cemiplimab

Administered per the protocol

Intervention Type DRUG

Fixed Dose Combination (FDC) cemiplimab+fianlimab

Or coadministration, depending on availability.

Intervention Type DRUG

Placebo

Administered per the protocol

Intervention Type DRUG

Other Intervention Names

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REGN2810 Libtayo REGN2810 Libtayo REGN3767

Eligibility Criteria

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Inclusion Criteria

1. All patients must be either stage III (IIIB, IIIC, IIID) or stage IV (M1a, M1b, M1c) per American Joint Committee on Cancer (AJCC) 8th edition (Amin 2017) and have histologically confirmed cutaneous melanoma that is deemed completely surgically resectable in order to be eligible as described in the protocol.
2. Patients with stage III melanoma must have clinically detectable disease that is confirmed as malignant on the pathology report. The pathology report must be reviewed, signed and dated by the investigator; this process will be confirmed during the interactive voice response system (IVRS) process as described in the protocol.
3. Patients must be candidates for full resection with curative intent and must be able to be surgically rendered free of disease with negative margins on resected specimens at surgery. The treatment plan including date of surgery must be documented by the investigator prior to randomization.
4. All patients must undergo full disease staging through a complete physical examination and imaging studies within 4 weeks prior to randomization. Imaging must include a computer tomography (CT) scan of the chest, abdomen, pelvis (if the primary tumor is on the head/neck then include a CT scan of head/neck), and all known sites of previously resected disease (if applicable) and brain magnetic resonance imaging (MRI) (or brain CT with contrast allowed if MRI is contraindicated).
5. Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0 or 1

Exclusion Criteria

Medical conditions:

1. Primary uveal melanoma
2. Ongoing or recent (within 2 years) evidence of an autoimmune disease that required systemic treatment with immunosuppressive agents. The following are non-exclusionary: vitiligo, childhood asthma that has resolved, residual hypothyroidism that requires only hormone replacement, psoriasis not requiring systemic treatment.
3. Patients must not have received any prior systemic anti-cancer therapy for melanoma. Prior radiotherapy for melanoma is allowed if not given to a target lesion or, if given to a target lesion, there is pathological evidence of disease progression in the same lesion.
4. Uncontrolled infection with human immunodeficiency virus (HIV), hepatitis B (HBV) or hepatitis C virus (HCV) infection; or diagnosis of immunodeficiency that is related to or results in chronic infection as described in the protocol.

Prior/concomitant therapy:
5. Use of immunosuppressive doses of corticosteroids (≥10mg of prednisone per day or equivalent) within 14 days of the first dose of study medication as described in the protocol.
6. Treatment with any anti-cancer therapy for malignancies other than melanoma, including immuno- therapy, chemotherapy, radiotherapy, or biological therapy in the 5 years prior to randomization as described in the protocol.

Other comorbidities:
7. Participants with a history of myocarditis.
8. History or current evidence of significant (CTCAE grade ≥2) local or systemic infection (e. g., cellulitis, pneumonia, septicemia) requiring systemic antibiotic treatment within 2 weeks prior to the first dose of trial medication.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Regeneron Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Trial Management

Role: STUDY_DIRECTOR

Regeneron Pharmaceuticals

Locations

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UC San Diego

La Jolla, California, United States

Site Status RECRUITING

USC Norris Comprehensive Cancer Center

Los Angeles, California, United States

Site Status RECRUITING

Hoag Family Cancer Institute

Newport Beach, California, United States

Site Status RECRUITING

California Pacific Medical Center Research Institute

San Francisco, California, United States

Site Status RECRUITING

University of California San Francisco (UCSF)

San Francisco, California, United States

Site Status RECRUITING

St John's Cancer Institute

Santa Monica, California, United States

Site Status RECRUITING

Hartford Hospital

Hartford, Connecticut, United States

Site Status RECRUITING

Emory Healthcare, Emory Clinic

Atlanta, Georgia, United States

Site Status RECRUITING

NorthShore University HealthSystem

Evanston, Illinois, United States

Site Status RECRUITING

Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status RECRUITING

Dana Farber Cancer Institute Brookline Avenue

Boston, Massachusetts, United States

Site Status RECRUITING

University of Massachusetts Chan Medical School

Worcester, Massachusetts, United States

Site Status RECRUITING

Washington University School of Medicine

St Louis, Missouri, United States

Site Status RECRUITING

Rutgers Cancer Institute of New Jersey

New Brunswick, New Jersey, United States

Site Status RECRUITING

Northwell Health Cancer Institute

Lake Success, New York, United States

Site Status RECRUITING

Duke Cancer Institute, University Hospital

Durham, North Carolina, United States

Site Status RECRUITING

Seidman Cancer Center

Cleveland, Ohio, United States

Site Status RECRUITING

Cleveland Clinic Foundation

Cleveland, Ohio, United States

Site Status RECRUITING

Thomas Jefferson University Hospital

Philadelphia, Pennsylvania, United States

Site Status RECRUITING

University of Pittsburgh

Pittsburgh, Pennsylvania, United States

Site Status RECRUITING

University of Tennessee Medical Center

Knoxville, Tennessee, United States

Site Status RECRUITING

University of Texas MD Anderson Cancer Center

Houston, Texas, United States

Site Status RECRUITING

University of Virginia

Charlottesville, Virginia, United States

Site Status RECRUITING

Lismore Base Hospital

Lismore, New South Wales, Australia

Site Status RECRUITING

Westmead Hospital

Westmead, New South Wales, Australia

Site Status RECRUITING

Melanoma Institute of Australia

Wollstonecraft, New South Wales, Australia

Site Status RECRUITING

Hervey Bay Hospital

Hervey Bay, Queensland, Australia

Site Status RECRUITING

The Queen Elizabeth Hospital

Woodville, South Australia, Australia

Site Status RECRUITING

Eastern Health

Box Hill, Victoria, Australia

Site Status RECRUITING

Peter MacCallum Cancer Centre

Melbourne, Victoria, Australia

Site Status RECRUITING

One Clinical Research at Hollywood Private Hospital

Nedlands, Western Australia, Australia

Site Status RECRUITING

Princess Margaret Cancer Centre

Toronto, Ontario, Canada

Site Status RECRUITING

Centre Hospitalier de l'Universite de Montreal (CHUM)

Montreal, Quebec, Canada

Site Status RECRUITING

CHU de Quebec - Universite Laval

Québec, , Canada

Site Status RECRUITING

CHU-Dijon

Dijon, Burgundy, France

Site Status RECRUITING

CHRU de Tours

Tours, Centre-Val de Loire, France

Site Status RECRUITING

Chu De Bordeaux

Bordeaux, Gironde, France

Site Status RECRUITING

Centre Francois Baclesse

Caen, Normandy, France

Site Status RECRUITING

Hopital Ambroise Pare

Boulogne, , France

Site Status RECRUITING

CHU Estaing

Clermont-Ferrand, , France

Site Status RECRUITING

Regional University Hospital of Lille 2208

Lille, , France

Site Status RECRUITING

Hopital Timone

Marseille, , France

Site Status RECRUITING

Centre Hospitalier Universitaire De Nice Hopital De L Archet

Nice, , France

Site Status RECRUITING

Saint Louis Hospital

Paris, Île-de-France Region, France

Site Status RECRUITING

Gustave Roussy

Villejuif, Île-de-France Region, France

Site Status RECRUITING

University Hospital Giessen

Giessen, Hesse, Germany

Site Status RECRUITING

Universitatsklinikum Leipzig, AoR

Leipzig, Saxony, Germany

Site Status RECRUITING

Charite University Medicine

Berlin, , Germany

Site Status RECRUITING

Azienda Ospedaliero-Universitaria Ferrara

Ferrara, , Italy

Site Status RECRUITING

U.O. Oncologia Medica 2 Universitaria, Azienda Ospedaliero Universitaria Pisana

Pisa, , Italy

Site Status RECRUITING

Instituto Oncologico Dr Rosell

Barcelona, Catalonia, Spain

Site Status RECRUITING

Vall d'Hebron Hospital

Barcelona, , Spain

Site Status RECRUITING

Hospital Clinic de Barcelona

Barcelona, , Spain

Site Status RECRUITING

Hospital Clinico Universitario de Salamanca

Salamanca, , Spain

Site Status RECRUITING

Countries

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United States Australia Canada France Germany Italy Spain

Central Contacts

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Clinical Trials Administrator

Role: CONTACT

844-734-6643

Other Identifiers

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2022-502825-17-00

Identifier Type: CTIS

Identifier Source: secondary_id

R3767-ONC-2208

Identifier Type: -

Identifier Source: org_study_id

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