A Study to Learn if a Combination of Fianlimab and Cemiplimab Versus Cemiplimab Alone is More Effective for Adult Participants With Advanced Non-Small Cell Lung Cancer (NSCLC)

NCT ID: NCT05785767

Last Updated: 2026-01-22

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

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE2/PHASE3

Total Enrollment

850 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-06-30

Study Completion Date

2032-02-05

Brief Summary

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This study is researching an experimental drug called fianlimab (also called REGN3767), combined with a medication called cemiplimab (also called REGN2810), individually called a "study drug" or collectively called "study drugs". The study is focused on patients who have advanced non-small cell lung cancer (NSCLC).

The aim of the study is to see how effective the combination of fianlimab and cemiplimab is in treating advanced NSCLC, in comparison with cemiplimab by itself.

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

* What side effects may happen from taking the study drugs
* How much study drug is in your blood at different times
* Whether the body makes antibodies against the study drugs (which could make the drug less effective or could lead to side effects)
* How administering the study drugs might improve your quality of life

Detailed Description

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Conditions

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Advanced Non-Small Cell Lung Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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A: fianlimab+cemiplimab

Phase 2: fianlimab (HD) Phase 3: fianlimab (chosen dose)

Group Type EXPERIMENTAL

fianlimab

Intervention Type DRUG

Every three weeks (Q3W) as intravenous (IV) co-infusion

cemiplimab

Intervention Type DRUG

Q3W as IV co-infusion

B: fianlimab+cemiplimab

Phase 2: fianlimab (LD) Phase 3: fianlimab (chosen dose)

Group Type EXPERIMENTAL

fianlimab

Intervention Type DRUG

Every three weeks (Q3W) as intravenous (IV) co-infusion

cemiplimab

Intervention Type DRUG

Q3W as IV co-infusion

C: cemiplimab monotherapy+placebo

Phase 2 and Phase 3

Group Type EXPERIMENTAL

cemiplimab

Intervention Type DRUG

Q3W as IV co-infusion

Placebo

Intervention Type DRUG

Q3W as IV co-infusion

Interventions

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fianlimab

Every three weeks (Q3W) as intravenous (IV) co-infusion

Intervention Type DRUG

cemiplimab

Q3W as IV co-infusion

Intervention Type DRUG

Placebo

Q3W as IV co-infusion

Intervention Type DRUG

Other Intervention Names

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REGN3767 REGN2810 Libtayo

Eligibility Criteria

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Inclusion Criteria

1. Patients with non-squamous or squamous histology NSCLC with stage IIIB or stage IIIC disease who are not candidates for surgical resection or definitive chemoradiation per investigator assessment or stage IV (metastatic disease), who received no prior systemic treatment for recurrent or metastatic NSCLC.
2. Availability of an archival or on-study formalin-fixed, paraffin-embedded (FFPE) tumor tissue sample, without intervening therapy between biopsy collection and screening as described in the protocol
3. For enrollment in phase 2, patients should have PD-L1 levels ≥ 50%, as determined by a College of American Pathologists (CAP)/Clinical Laboratory Improvement Amendments (CLIA) (or equivalently licensed, according to local regulations) accredited laboratory, as described in the protocol. For enrollment in phase 3, patients should have expression of programmed cell death ligand-1 (PD-L1) in ≥50% of tumor cells stained using an assay performed by a central laboratory, as described in the protocol.
4. At least 1 radiographically measurable lesion by computed tomography (CT) or magnetic resonance imaging (MRI) per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) criteria. Target lesions may be located in a previously irradiated field if there is documented (radiographic) disease progression in that site.
5. Eastern Cooperative Oncology Group (ECOG) performance status of ≤1.
6. Adequate organ and bone marrow function, as described in the protocol.

Exclusion Criteria

1. Patients who have never smoked, defined as smoking ≤100 cigarettes in a lifetime.
2. Active or untreated brain metastases or spinal cord compression. Patients are eligible if central nervous system (CNS) metastases are adequately treated, and patients have neurologically returned to baseline (except for residual signs or symptoms related to the CNS treatment) for at least 2 weeks prior to enrollment. Patients must be off (immunosuppressive doses of) corticosteroid therapy.
3. Patients with tumors tested positive for actionable epidermal growth factor receptor (EGFR) gene mutations, anaplastic lymphoma kinase (ALK) gene translocations, or c-ros oncogene 1 (ROS1) fusions, as described in the protocol.
4. Encephalitis, meningitis, or uncontrolled seizures in the year prior to enrollment.
5. History of interstitial lung disease (eg, idiopathic pulmonary fibrosis or organizing pneumonia), of active, noninfectious pneumonitis that required immune-suppressive doses of glucocorticoids to assist with management, or of pneumonitis within the last 5 years. A history of radiation pneumonitis in the radiation field is permitted as long as pneumonitis resolved ≥6 months prior to enrollment.
6. Known primary immunodeficiencies, either cellular (eg, DiGeorge syndrome, T-cell-negative severe combined immunodeficiency \[SCID\]) or combined T- and B-cell immunodeficiencies (eg, T- and B-cell negative SCID, Wiskott Aldrich syndrome, ataxia telangiectasia, common variable immunodeficiency).
7. Ongoing or recent (within 2 years) evidence of significant autoimmune disease that required treatment with systemic immunosuppressive treatments, which may suggest risk of immune-mediated treatment-emergent adverse events (imTEAEs). Patients with uncontrolled type 1 diabetes mellitus or with uncontrolled adrenal insufficiency are excluded. The following are not exclusionary: vitiligo, childhood asthma that has resolved, residual hypothyroidism that required only hormone replacement, or psoriasis that does not require systemic treatment.
8. Patients with a condition requiring corticosteroid therapy (\>10 mg prednisone/day or equivalent) within 14 days of randomization. Physiologic replacement doses are allowed even if they are \>10 mg of prednisone/day or equivalent, as long as they are not being administered for immunosuppressive intent. Patients with clinically relevant systemic immune suppression within the last 3 months before trial enrollment are excluded. Inhaled or topical steroids are permitted, provided that they are not for treatment of an autoimmune disorder.
9. Patients who have received prior systemic therapies are excluded with the exception of the following:

1. Adjuvant or neoadjuvant platinum-based doublet chemotherapy (after surgery and/or radiation therapy) if recurrent or metastatic disease develops more than 6 months after completing therapy as long as toxicities have resolved to CTCAE grade ≤1 or baseline with the exception of alopecia and peripheral neuropathy.
2. Anti-PD-(L) 1 with or without LAG-3 as an adjuvant or neoadjuvant therapy as long as the last dose is \>12 months prior to enrollment.
3. Prior exposure to other immunomodulatory or vaccine therapies as an adjuvant or neoadjuvant therapy, Cytotoxic T-lymphocyte-associated protein 4 (anti-CTLA-4) antibodies as long as the last dose is \>6 months prior to enrollment. Immune-mediated AEs must be resolved to CTCAE grade ≤1 or baseline by the time of enrollment. Endocrine immune-mediated AEs controlled with hormonal or other non-immunosuppressive therapies without resolution prior to enrollment are allowed.
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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Arizona Clinical Research Center

Tucson, Arizona, United States

Site Status

Yuma Regional Medical Center

Yuma, Arizona, United States

Site Status

Emad Ibrahim, MD, Inc.

Redlands, California, United States

Site Status

Eastern CT Hematology and Oncology Associates

Norwich, Connecticut, United States

Site Status

Clermont Oncology Center

Clermont, Florida, United States

Site Status

Miami Veterans Administration HealthCare System

Miami, Florida, United States

Site Status

Mid Florida Hematology and Oncology Center

Orange City, Florida, United States

Site Status

Pinellas Hematology and Oncology

St. Petersburg, Florida, United States

Site Status

Tallahassee Memorial Healthcare

Tallahassee, Florida, United States

Site Status

Moffitt Cancer Center

Tampa, Florida, United States

Site Status

University of Illinois

Chicago, Illinois, United States

Site Status

Mary Bird Perkins Cancer Center

Baton Rouge, Louisiana, United States

Site Status

Hattiesburg Clinic

Hattiesburg, Mississippi, United States

Site Status

Mercy South

St Louis, Missouri, United States

Site Status

St. Vincent Healthcare

Billings, Montana, United States

Site Status

New Mexico Cancer Care Alliance

Albuquerque, New Mexico, United States

Site Status

Clinical Research Alliance Inc

Westbury, New York, United States

Site Status

Gabrail Cancer Center Research

Canton, Ohio, United States

Site Status

University of Tennessee Medical Center

Knoxville, Tennessee, United States

Site Status

Renovatio Clinical

El Paso, Texas, United States

Site Status

MD Anderson Cancer Center

Houston, Texas, United States

Site Status

University of Virginia Medical Center

Charlottesville, Virginia, United States

Site Status

Bon Secours Cancer Institute Richmond

Midlothian, Virginia, United States

Site Status

Macquarie University Health Science Center (MQ Health)

Macquarie Park, New South Wales, Australia

Site Status

Riverina Cancer Care Centre (RCCC)

Wagga Wagga, New South Wales, Australia

Site Status

Southern Medical Day Care Centre

Wollongong, New South Wales, Australia

Site Status

Ballarat Regional Integrated Cancer Centre (BRICC)

Ballarat, Victoria, Australia

Site Status

Bendigo Hospital

Bendigo, Victoria, Australia

Site Status

British Columbia Cancer Center-Kelowna

Kelowna, British Columbia, Canada

Site Status

Cancer Center of Adjara

Batumi, Adjara, Georgia

Site Status

Israeli Georgian Medical Research Clinic Helsicore

Tbilisi, , Georgia

Site Status

Research Institute of Clinical Medicine

Tbilisi, , Georgia

Site Status

Tbilisi State Medical University and Ingorokva High Medical Technology University Clinic

Tbilisi, , Georgia

Site Status

NNLE New Vision University Hospital

Tbilisi, , Georgia

Site Status

The Institute of Clinical Oncology

Tbilisi, , Georgia

Site Status

TIM - Tbilisi Institute of Medicine

Tbilisi, , Georgia

Site Status

JSC Evex Hospitals - Caraps Medline

Tbilisi, , Georgia

Site Status

Soroka University Medical Center

Beersheba, Southern District, Israel

Site Status

Shaare Zedek Medical Center

Jerusalem, , Israel

Site Status

Tel Aviv Sourasky Medical Center

Tel Aviv, , Israel

Site Status

Assuta Medical Centers

Tel Aviv, , Israel

Site Status

Hospital Sultan Ismail

Johor Bahru, Johor, Malaysia

Site Status

Hospital Kuala Lumpur

Kuala Lumpur, Kuala Lumpur, Malaysia

Site Status

Hospital Tengku Ampuan Afzan (HTTA)

Kuantan, Pahang, Malaysia

Site Status

National Cancer Institute

Putrajaya, Putrajaya, Malaysia

Site Status

Hospital Pulau Pinang

Pulau Pinang, , Malaysia

Site Status

Gachon University Gil Medical Center

Incheon, Gyeonggi-do, South Korea

Site Status

St. Vincents Hospital - The Catholic University of Korea

Suwon, Gyeonggi-do, South Korea

Site Status

Ajou University Hospital

Suwon, Gyeonggi-do, South Korea

Site Status

Chungbuk National University Hospital

Cheongju-si, North Chungcheong, South Korea

Site Status

Chungnam National University Hospital

Daejeon, , South Korea

Site Status

Korea University Guro Hospital

Seoul, , South Korea

Site Status

Ulsan University Hospital

Ulsan, , South Korea

Site Status

Hospital Clinico Universitario Santiago de Compostela

Santiago de Compostela, A Coruna, Spain

Site Status

Son Espases

Palma, Balearic Islands, Spain

Site Status

Instituto Oncologico Dr Rosell Hospital Universitari Quiron Dexeus Location

Barcelona, Catalonia, Spain

Site Status

Hospital Universitario Puerta de Hierro - Majadahonda

Majadahonda, Madrid, Spain

Site Status

Hospital Universitario Central de Asturias

Oviedo, Principality of Asturias, Spain

Site Status

Vall d'Hebron Barcelona Hospital Campus

Barcelona, , Spain

Site Status

Hospital Clinico San Carlos

Madrid, , Spain

Site Status

Hospital Regional Universitario de Malaga

Málaga, , Spain

Site Status

Hospital De Valme

Seville, , Spain

Site Status

Dalin Tzu Chi Hospital

Dalin, Chia-Yi, Taiwan

Site Status

Buddhist Tzu Chi General Hospital

Hualien City, Hualien, Taiwan

Site Status

Chung-Ho Memorial Hospital

Kaohsiung City, , Taiwan

Site Status

Taipei Medical University - Shuang Ho Hospital

New Taipei City, , Taiwan

Site Status

National Cheng Kung University Hospital

Tainan, , Taiwan

Site Status

National Taiwan University Hospital

Taipei, , Taiwan

Site Status

Taipei Medical University Hospital

Taipei, , Taiwan

Site Status

Tri-Service General Hospital

Taipei, , Taiwan

Site Status

Navamindradhiraj University

Dusit, Bangkok, Thailand

Site Status

Lampang Cancer Center

Lampang, Changwat Lampang, Thailand

Site Status

Prince Of Songkla Hospital, Prince Of Songkhla University

Hat Yai, Changwat Songkhla, Thailand

Site Status

King Chulalongkorn Memorial Hospital

Bangkok, , Thailand

Site Status

Siriraj Hospital

Bangkok, , Thailand

Site Status

Chiang Mai University

Chiang Mai, , Thailand

Site Status

Acibadem Adana Hastanesi

Adana, Adana, Turkey (Türkiye)

Site Status

Hacettepe University Medical Faculty

Altındağ, Ankara, Turkey (Türkiye)

Site Status

Medipol University Hospital

Istanbul, Bagcilar, Turkey (Türkiye)

Site Status

Bursa Uludag University Medical Faculty

Bursa, Gorukle Bursa Turkiye, Turkey (Türkiye)

Site Status

Istinye University VMMedical Park Pendik Hospital

Pendik, Istanbul, Turkey (Türkiye)

Site Status

Ege University Faculty of Medicine

Bornova, İzmir, Turkey (Türkiye)

Site Status

Kocaeli University Hospital

Kocaeli, Marmara, Turkey (Türkiye)

Site Status

Necmettin Erbakan University Meram Faculty of Medicine

Konya, Meram, Turkey (Türkiye)

Site Status

Ondokuz Mayıs University

Kurupelit, Samsun, Turkey (Türkiye)

Site Status

Gaziantep Medicalpoint Hospital

Gaziantep, Sehitkamil, Turkey (Türkiye)

Site Status

Sakarya University

Sakarya, Serdivan, Turkey (Türkiye)

Site Status

Adana City Education and Research Hospital

Adana, Yuregir, Turkey (Türkiye)

Site Status

Baskent University

Adana, , Turkey (Türkiye)

Site Status

Ankara Etlik Sehir Hastanesi Ankara Etlik City Hospital

Ankara, , Turkey (Türkiye)

Site Status

Gulhane Training and Research Hospital

Ankara, , Turkey (Türkiye)

Site Status

Ankara Yildirim Beyazit Universitesi - Tip Fakultesi

Ankara, , Turkey (Türkiye)

Site Status

Gazi University

Ankara, , Turkey (Türkiye)

Site Status

Liv Hospital Ankara

Ankara, , Turkey (Türkiye)

Site Status

Sbu Doctor Abdurrahman Yurtaslan Ankara Onkoloji Suam

Ankara, , Turkey (Türkiye)

Site Status

Yuksek Ihtisas Unıversity Medicalpark Hospital

Ankara, , Turkey (Türkiye)

Site Status

Memorial Ankara Hospital

Ankara, , Turkey (Türkiye)

Site Status

Trakya University

Edirne, , Turkey (Türkiye)

Site Status

Koc University

Istanbul, , Turkey (Türkiye)

Site Status

Bezmialem Vakif University

Istanbul, , Turkey (Türkiye)

Site Status

Memorial Bahcelievler Hospital

Istanbul, , Turkey (Türkiye)

Site Status

Istanbul University Cerrahpasa at Cerrahpasa Medical Faculty

Istanbul, , Turkey (Türkiye)

Site Status

Istanbul Medeniyet University - Prof Dr Suleyman Yalcin Sehir Hospital

Istanbul, , Turkey (Türkiye)

Site Status

Izmir Dr.Suat Seren Gogus Hastaliklari Ve Cerrahisi Egitim Ve Arastirma Hastanesi

Izmir, , Turkey (Türkiye)

Site Status

Izmir Economy University Medical Point Hospital

Izmir, , Turkey (Türkiye)

Site Status

Vm Medicalpark Hospital

Samsun, , Turkey (Türkiye)

Site Status

Countries

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United States Australia Canada Georgia Israel Malaysia South Korea Spain Taiwan Thailand Turkey (Türkiye)

Related Links

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Other Identifiers

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2022-501483-18-00

Identifier Type: CTIS

Identifier Source: secondary_id

R3767-ONC-2235

Identifier Type: -

Identifier Source: org_study_id

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