Arena Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company, focuses on the discovery, development, and commercialization of oral drugs for cardiovascular, central nervous system, inflammatory, and metabolic diseases. It is developing a pipeline of compounds targeting orphan G protein-coupled receptors using its drug discovery technologies, including constitutively activated receptor technology and Melanophore technology. The company’s drug candidate, lorcaserin hydrochloride, is in Phase 3 clinical trial program for the treatment of obesity. Its other lead development programs include APD125, a 5-HT2a serotonin receptor inverse agonist, which is in Phase 2 clinical...