LOS ANGELES (AP) ? Bradley Cooper is throwing his weight behind the fifth annual Stand Up To Cancer telecast. Cooper will serve as executive producer of the fundraiser airing in September. In a statement Wednesday, Cooper said he's proud to be part of Stand Up To Cancer's effort to get lifesaving treatment to patients more quickly through collaborative research. The hour-long, commercial-free fundraiser will air Sept. 9 on 45-plus broadcast networks and cable channels in the U.S. and Canada, with celebrities and performers to be announced. ___ Online: https://www.standup2cancer.org