500 FORBES BOULEVARD
SOUTH SAN FRANCISCO
CALIFORNIA  94080
T 650.266.3000
F 650.266.3010

Cell Genesys to Present at the Leerink Swann Solid Tumors Roundtable Conference
May 2, 2008

Cell Genesys Reports First Quarter 2008 Financial Results
May 1, 2008

Cell Genesys to Webcast First Quarter 2008 Conference Call
April 24, 2008

Cell Genesys Reports Data on an Association Between Immune Response and Anti-Tumor Activity in Patients Receiving GVAX Immunotherapy for Prostate Cancer and Ipilimumab (MDX-010)
April 15, 2008

Cell Genesys Reports Preclinical Data Demonstrating Superior Anti-Tumor Immunity for Multiantigen Compared to Single-Antigen Immunotherapies
April 14, 2008