Arena and Eisai Provide Update on Lorcaserin FDA Meeting

Arena Pharmaceuticals, Inc.

and Eisai Inc. announced today that the US Food and Drug Administration (FDA) Endocrinologic and Metabolic Drugs Advisory Committee voted 9 to 5 that the available data do not adequately demonstrate that the potential benefits of lorcaserin outweigh the potential risks, when used long-term in a population of overweight and obese individuals to allow marketing approval. Lorcaserin, which Arena discovered and has developed, is intended for weight management, including weight loss and maintenance of weight loss, in patients who are obese (Body Mass Index, or BMI, >30) or patients who are overweight (BMI >27) and have at least one weight-related co-morbid condition.