Donald H. Picker

DONALD H. PICKER has served as Executive Vice President, Research and
Development at Callisto Pharmaceuticals, Inc., since March 2004. From
May 2003 until March 2004, Dr. Picker served as Senior Vice President,
Drug Development. Dr. Picker was Chief Executive Officer and President
of Synergy Pharmaceuticals Inc. and a member of its Board of Directors
from 1998 to April 2003. From 1996 to 1998, Dr. Picker was President and
Chief Operating Officer of LXR Biotechnology Inc., an apoptosis drug
development company. From 1991 to 1996, he was Senior Vie President of
Research and Development at Genta Inc., an antisense drug development
company. From 1983 to 1991, Dr. Picker was Worldwide Vice President of
R&D for Johnson Matthey, Inc. Dr. Picker received his PhD in Organic
Chemistry from the State University of New York at Albany, and received
his Bachelor of Science degree in Chemistry from the Brooklyn
Polytechnic Institute.