Tarrytown, NY (August 11, 2008) – Regeneron Pharmaceuticals, Inc. (Nasdaq: REGN) today announced the publication of the results of three studies which supported the U.S. Food and Drug Administration (FDA) regulatory submission for ARCALYST® (rilonacept) Injection for Subcutaneous Use for the treatment of Cryopyrin-Associated Periodic Syndromes (CAPS).