Etrasimod - Pfizer
Alternative Names: APD-334; Etrasimod arginine - Pfizer; Etrasimod L-arginine; PF-07915503; VELSIPITY; VerespitiLatest Information Update: 30 Oct 2026
At a glance
- Originator Arena Pharmaceuticals
- Developer Arena Pharmaceuticals; Everest Medicines; Pfizer
- Class 3-ring heterocyclic compounds; Acetic acids; Amino acids; Anti-inflammatories; Benzene derivatives; Cyclopentanes; Ethers; Fluorinated hydrocarbons; Indoles; Skin disorder therapies; Small molecules
- Mechanism of Action Sphingosine 1 phosphate receptor modulators
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Orphan Drug Status
Yes - Eosinophilic oesophagitis
Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.
- New Molecular Entity Yes
Highest Development Phases
- Marketed Ulcerative colitis
- Phase II/III Atopic dermatitis
- Phase II Eosinophilic oesophagitis
- Discontinued Alopecia areata; Crohn's disease; Inflammatory bowel diseases; Primary biliary cirrhosis; Pyoderma gangrenosum
Most Recent Events
- 15 Oct 2026 Pfizer completes a phase I trial for pharmacokinetic trial (In volunteers) in Belgium (NCT07153159) (CTIS2025-520930-44-00)
- 17 Sep 2026 Center for Drug Evaluation (CDE) of China’s National Medical Products Administration (NMPA) accepts the application for localized manufacturing for Etrasimod and grants Priority Review .
- 17 Sep 2026 Everest Medicines expects to receive NDA approval for VELSIPITY® etrasimod (VELSIPITY®) tablets in Taiwan, China in the second half of 2026 .