SAN DIEGO--(BUSINESS WIRE)--Metabasis Therapeutics, Inc. (Nasdaq:MBRX) announced today that Dr. Elizabeth Stoner was appointed to the Company’s Board of Directors on April 23, 2008. Dr. Stoner brings extensive global clinical research and development experience from her 22-year tenure at Merck Research Laboratories, as well as from her years in academic medicine. She will also be joining Metabasis’ Scientific Advisory Board.