LOS ANGELES (EMBARGOED UNTIL: 4:30 p.m. EST /February 19, 2008) – A new gene therapy approach that attracts and “trains” immune system cells to destroy deadly brain cancer cells also provides long-term immunity, produces no significant adverse effects and -- in the process of destroying the tumor -- promotes the return of normal brain function and behavioral skills, according to a study conducted by researchers at Cedars-Sinai Medical Center’s Board of Governors Gene Therapeutics Research Institute.