Arena Pharmaceuticals, Inc. is a biopharmaceutical company. The Company is focused on developing small molecule drugs across a range of therapeutic areas. The Company has three primary investigational clinical programs: etrasimod (APD334) in Phase II evaluation for ulcerative colitis, APD371 entering Phase II evaluation for the treatment of pain associated with Crohn's disease, and ralinepag (APD811) in Phase II evaluation for pulmonary arterial hypertension (PAH). The...