Fianlimab - Regeneron Pharmaceuticals
Alternative Names: Anti-LAG-3 antibody - Regeneron Pharmaceuticals; REGN-3767Latest Information Update: 21 Nov 2025
At a glance
- Originator Regeneron Pharmaceuticals
- Class Antineoplastics; Immunotherapies; Monoclonal antibodies
- Mechanism of Action Antibody-dependent cell cytotoxicity; CD223 antigen inhibitors; T lymphocyte stimulants
-
Orphan Drug Status
No
Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.
- New Molecular Entity Yes
Highest Development Phases
- Phase III Malignant melanoma
- Phase II/III Non-small cell lung cancer
- Phase II Bladder cancer; Colorectal cancer; Solid tumours
- Phase I Haematological malignancies
Most Recent Events
- 21 Nov 2025 Regeneron plans a phase II trial for Malignant mesothelioma (Combination therapy, Inoperable/Unresectable) (CTIS2024-519208-29-00)
- 03 Nov 2025 Regeneron Pharmaceuticals plans the phase II NACho trial for Colon cancer (Neo-adjuvant therapy, Combination therapy) (IV), in January 2026 (NCT07224022)
- 03 Nov 2025 Regeneron Pharmaceuticals plans the phase II LAG-BOOST trial for Brain metastases (Combination therapy) in USA (IV) in December 2025 (NCT07223541)