Arena Pharmaceuticals Announces Orphan Drug Designation for Etrasimod for the Treatment of Eosinophilic Esophagitis (EoE)

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Arena Pharmaceuticals, Inc. (Nasdaq: ARNA) today announced that the U.S. Food and Drug Administration (FDA) has granted Orphan Drug Designation status to etrasimod, a highly selective, once-daily, oral sphingosine 1-phosphate (S1P) receptor modulator, for the treatment of eosinophilic esophagitis (EoE).