Zynyz
Zynyz (retifanlumab) is a prescription immunotherapy medication classified as a PD-1 inhibitor. It works by helping the immune system recognize and attack cancer cells. This medication is used to treat certain types of cancer in adults when the disease has spread or cannot be treated with surgery.
Zynyz is an immunotherapy drug used to treat certain advanced cancers by helping the immune system fight tumor cells.
Key facts at a glance
- RxNorm
- 2632987
- Generic
- Zynyz
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Zynyz is used to treat adults with metastatic or recurrent locally advanced Merkel cell carcinoma, and may also be used for other cancers as determined by a healthcare provider.
Zynyz is a monoclonal antibody that blocks the PD-1 pathway, removing brakes on the immune system and allowing it to better recognize and attack cancer cells.
Zynyz is administered as an intravenous infusion by a healthcare professional. It may cause immune-related side effects affecting various organs. Patients should discuss all medical conditions and medications with their doctor before starting treatment.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy