Retifanlimab
| Monoclonal antibody | |
|---|---|
| Type | Whole antibody | 
| Source | Humanized | 
| Target | Programmed cell death protein 1 (PD-1) | 
| Clinical data | |
| Trade names | Zynyz | 
| Other names | AEX-1188, INCMGA-00012, MGA-012, retifanlimab-dlwr | 
| AHFS/Drugs.com | Zynyz | 
| MedlinePlus | a623017 | 
| License data | 
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| Routes of administration | Intravenous | 
| ATC code | |
| Legal status | |
| Legal status | |
| Identifiers | |
| CAS Number | |
| DrugBank | |
| UNII | |
| KEGG | |
| Chemical and physical data | |
| Formula | C6456H9934N1702O2032S46 | 
| Molar mass | 145381.13 g·mol−1 | 
Retifanlimab, sold under the brand name Zynyz, is an anti-cancer medication used for the treatment of Merkel cell carcinoma. Retifanlimab is a programmed death receptor-1 (PD-1)–blocking monoclonal antibody.
It was approved for medical use in the United States in March 2023, and in the European Union in April 2024.