Arena Pharmaceuticals Inc. is on a roll, having revealed positive Phase II results for ralinepag in pulmonary arterial hypertension (PAH) followed by good Phase II data for etrasimod in ulcerative colitis (UC) – and now the company has encouraging results from a small exploratory study for its third clinical candidate, olorinab (APD371), in abdominal pain associated with Crohn's disease.
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