Allan Rubenstein,

Allan E. Rubenstein, M.D.

Vice Chairman & Lead Director, Chief Executive Officer, NexGenix Pharmaceuticals LLC

Dr. Rubenstein has served as Vice Chairman and Lead Director since July 2002, and served as Chairman of the Board from July 1994 through July 2002. He served as Acting Chairman of the Board from April 1993 through June 1994. He is Chief Executive Officer of NexGenix Pharmaceuticals and Clinical Professor of Neurology at New York University, School of Medicine (NY). He served as a director of Bioimaging Technologies (BITI, Nasdaq), a specialty clinical trials company, from 2000 to 2003. He is also Medical Director Emeritus of the Children's Tumor Foundation and a consultant to the National Institutes of Health, the U.S. Food and Drug Administration and the U.S. Department of Defense, where he served as Chair of the Army Neurofibromatosis Research Program Integration Panel in 2001.