Drugs / Fianlimab
last change 10 days ago re-read 9 days ago

Fianlimab

also known as R3767 · REGN3767

Monoclonal antibody targets LAG3 via inhibition

Developed for
melanoma · non-small cell lung carcinoma · cancer · clear cell renal carcinoma · colorectal cancer · fallopian tube cancer · head and neck squamous cell carcinoma · hepatocellular carcinoma
+19 more · ovarian cancer · primary peritoneal carcinoma · skin basal cell carcinoma · colon carcinoma · cutaneous melanoma · endometrial cancer · head and neck cancer · infiltrating bladder urothelial carcinoma · malignant pleural mesothelioma · pediatric high-grade glioma · plasma cell myeloma · posterior fossa group A ependymoma · prostate cancer · renal cell carcinoma · skin squamous cell carcinoma · squamous cell carcinoma · urothelial carcinoma · breast cancer · nasopharyngeal carcinoma
Investigated by
Regeneron Pharmaceuticals · Memorial Sloan Kettering Cancer Center · Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins · University of Chicago · Brian Rini · Bristol-Myers Squibb
+22 more · Columbia University · French Cooperative Thoracic Intergroup · Henry Ford Health System · John Strickler, M.D. · M.D. Anderson Cancer Center · MFAR · Mayo Clinic · Montefiore Medical Center · NYU Langone Health · National Cancer Institute (NCI) · Pierre Fabre Laboratories · QuantumLeap Healthcare Collaborative · Spanish Melanoma Group · Thomas Jefferson University · UC Cancer Consortium · United States Department of Defense · University of California, Irvine · University of Michigan · University of Oklahoma · University of Wisconsin, Madison · Vanderbilt-Ingram Cancer Center · Virginia Commonwealth University

Trials 38

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 14 trials
Phase 1 NCT07365839 Oct 2026 → May 2035 hepatocellular carcinoma Virginia Commonwealth University Withdrawn No outcome recorded
Phase 1 NCT05137054 Aug 2022 → Mar 2028 expected plasma cell myeloma Regeneron Pharmaceuticals Recruiting No outcome recorded
Phase 1 NCT03233139 Jun 2017 → Sep 2027 expected cancer Regeneron Pharmaceuticals Active not recruiting No outcome recorded
Phase 1 NCT03005782 Nov 2016 → Apr 2024 cancer Regeneron Pharmaceuticals Completed No outcome recorded
Phase 1/23 trials
Phase 1/2 NCT07567469 Aug 2026 → Aug 2032 expected pediatric high-grade glioma, posterior fossa group A ependymoma Regeneron Pharmaceuticals Not yet recruiting No outcome recorded
Phase 1/2 NCT04989946 Dec 2021 → Dec 2026 expected prostate cancer University of Wisconsin, Madison Active not recruiting No outcome recorded
Phase 1/2 NCT04590326 Dec 2020 → Nov 2028 expected endometrial cancer, fallopian tube cancer, ovarian cancer, primary peritoneal carcinoma Regeneron Pharmaceuticals Recruiting No outcome recorded
Phase 226 trials
Phase 2 NCT07346196 Feb 2027 → Aug 2031 expected squamous cell carcinoma University of Chicago Not yet recruiting No outcome recorded
Phase 2 NCT07527325 Dec 2026 → Feb 2029 expected cutaneous melanoma University of California, Irvine Not yet recruiting No outcome recorded
Phase 2 NCT07808515 Oct 2026 → Nov 2030 expected skin basal cell carcinoma Regeneron Pharmaceuticals Not yet recruiting No outcome recorded
Phase 2 NCT07511036 Sep 2026 → May 2028 expected melanoma M.D. Anderson Cancer Center Not yet recruiting No outcome recorded
Phase 2 NCT07414992 Sep 2026 → Mar 2028 urothelial carcinoma Memorial Sloan Kettering Cancer Center Withdrawn No outcome recorded
Phase 2 NCT07224022 Jul 2026 → Aug 2028 expected colon carcinoma John Strickler, M.D. Not yet recruiting No outcome recorded
Phase 2 NCT07281768 Jul 2026 → Jul 2030 expected colorectal cancer Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins Recruiting No outcome recorded
Phase 2 NCT07179315 Jun 2026 → Nov 2029 expected head and neck cancer University of Chicago Recruiting No outcome recorded
Phase 2 NCT07188896 Apr 2026 → Nov 2029 expected clear cell renal carcinoma Brian Rini Recruiting No outcome recorded
Phase 2 NCT06769698 Apr 2026 → Jun 2028 expected head and neck squamous cell carcinoma Regeneron Pharmaceuticals Recruiting No outcome recorded
Phase 2/32 trials
Phase 2/3 NCT05800015 Aug 2023 → Jan 2030 expected non-small cell lung carcinoma Regeneron Pharmaceuticals Active not recruiting No outcome recorded
Phase 2/3 NCT05785767 Jun 2023 → Sep 2027 expected non-small cell lung carcinoma Regeneron Pharmaceuticals Active not recruiting No outcome recorded
Phase 33 trials · 1 missed
Phase 3 NCT06246916 Sep 2024 → Mar 2027 expected melanoma Regeneron Pharmaceuticals Recruiting No outcome recorded
Phase 3 NCT05608291 Jan 2023 → Jul 2026 overdue melanoma Regeneron Pharmaceuticals Active not recruiting No outcome recorded
Phase 3 NCT05352672 Jul 2022 → Mar 2026 overdue melanoma Regeneron Pharmaceuticals Active not recruiting Missed primary
Comparator or background therapy3 trials
Phase 1 NCT07650266 Comparator Jul 2026 → Jul 2030 expected nasopharyngeal carcinoma Memorial Sloan Kettering Cancer Center Not yet recruiting No outcome recorded
Phase 2 NCT07058012 Comparator Apr 2026 → Apr 2029 expected colorectal cancer NSABP Foundation Inc Recruiting No outcome recorded
Phase 2 NCT06848088 Background Apr 2025 → Oct 2029 expected melanoma Regeneron Pharmaceuticals Enrolling by invitation No outcome recorded

News releases announcing trial results or a regulatory action · 6

DateIssuerRelease
2026-05-15 Regeneron Pharmaceuticals Results Regeneron Provides Update on Phase 3 Trial of Fianlimab (LAG-3 Inhibitor) Combination in First-Line Unresectable or Metastatic Melanoma regeneron.com ↗
The trial did not reach statistical significance for the primary endpoint of improvement in progression-free survival (PFS) compared to pembrolizumab (PD-1 inhibitor) monotherapy.
2024-09-09 Regeneron Pharmaceuticals Results Regeneron to Highlight Progress Across Its Differentiated Oncology Portfolio and Pipeline at WCLC and ESMO regeneron.com ↗
At ESMO, the latest two-year data for our LAG-3 inhibitor fianlimab combined with Libtayo show persistent and high clinical activity in advanced melanoma patients.
2023-05-25 Regeneron Pharmaceuticals Results Fianlimab (LAG-3 inhibitor) Combined with Libtayo® (cemiplimab) Shows Clinically Meaningful and Durable Tumor Responses Across Key Advanced Melanoma Patient Populations regeneron.com ↗
Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) today announced positive data from three independent cohorts evaluating an investigational combination of LAG-3 inhibitor fianlimab and PD-1 inhibitor Libtayo® (cemiplimab) in adults with advanced melanoma.
2022-12-01 Regeneron Pharmaceuticals Results Regeneron ESMO IO Presentations Highlight Potential of Fianlimab and Libtayo® (cemiplimab) in Multiple Solid Tumor Types regeneron.com ↗
Fianlimab combined with Libtayo has generated early-but-promising clinical activity in advanced melanoma and non-small cell lung cancer, demonstrating the potential of Regeneron's oncology pipeline to potentially advance the standard-of-care in various cancers.
2022-09-12 Regeneron Pharmaceuticals Results Fianlimab (LAG-3 Inhibitor) Combined with Libtayo® (cemiplimab) Demonstrates Greater than 60% Response Rates in Two Independent Cohorts of Patients with Advanced Melanoma Naïve to PD-1 or PD-L1 Inhibitors regeneron.com ↗
In two independent dose expansion cohorts from a Phase 1 clinical trial of patients naïve to PD-1 or PD-L1 inhibitors, our LAG-3 inhibitor fianlimab combined with Libtayo demonstrated greater than 60% response rates.
2021-05-19 Regeneron Pharmaceuticals Results Libtayo® (cemiplimab-rwlc) Presentations at ASCO Highlight Expanding Clinical Data in Diverse Cancers regeneron.com ↗
Efficacy was greatest in PD-1 inhibitor naïve patients, who experienced a 64% objective response rate (21 of 33 patients; 3 complete responses, 18 partial responses), and the median progression-free survival and median duration of response had not yet been reached.

Evidence & citations 7 cited values

Every value below carries the sentence it was read from. 41 sources stand behind the page.

FieldValueCited text
Known as Fianlimab “This study is researching an experimental drug called fianlimab (also known as REGN3767), combined with another medication called cemiplimab (also known as REGN2810), called...” NCT06246916 ↗
38

“Fianlimab (REGN3767) administered intravenously in combination with Cemiplimab.” NCT05929664 ↗

“Cemiplimab 350mg + Fianlimab 1600mg intravenously” NCT07058012 ↗

NCT06918132 ↗

NCT07567469 ↗

NCT06787612 ↗

NCT04590326 ↗

NCT05352672 ↗

NCT05785767 ↗

NCT03916627 ↗

NCT06205836 ↗

Show 28 more sources

Known as R3767 “This study is researching an experimental drug called REGN3767, also known as fianlimab (R3767), when combined with another medication called REGN2810, also known as cemiplimab” NCT05352672 ↗
2

“This study is researching an experimental drug called REGN3767, also known as fianlimab (R3767), when combined with another medication called cemiplimab” NCT05608291 ↗

“This study is researching an experimental drug called REGN3767, also known as fianlimab (R3767)” NCT06190951 ↗

Known as REGN3767 ClinicalTrials.gov intervention name — accepted as the source's own label NCT01042379 ↗
1

NCT03005782 ↗

Action Inhibit “Fianlimab is a drug that blocks the action of a protein called lymphocyte activation gene (LAG)-33 (LAG-3)” NCT03916627 ↗
Modality Monoclonal antibody “Cemiplimab (also known as REGN2810) and fianlimab (also known as REGN3767) are both a type of drug called a monoclonal antibody.” NCT03916627 ↗
Route Intravenous “REGN 3767: 1600 mg q3W X 12 weeks IV” NCT01042379 ↗
Target LAG3 “Fianlimab is a human IgG4 antibody to lymphocyte activation gene-3 (LAG-3)” NCT04989946 ↗