Lance Armstrong has stepped down chairman of Livestrong, his cancer foundation and has also been dropped by Nike, RadioShack and Anheuser-Busch. This follows a week after the United States Anti-Doping Agency made public its evidence against the cyclist.

“I have had the great honor of serving as this foundation’s chairman for the last five years and its mission and success are my top priorities,” Armstrong said in a statement. “Today therefore, to spare the foundation any negative effects as a result of controversy surrounding my cycling career, I will conclude my chairmanship.”

“Due to the seemingly insurmountable evidence that Lance Armstrong participated in doping and misled Nike for more than a decade, it is with great sadness that we have terminated our contract with him,” the statement said. “Nike does not condone the use of illegal performance enhancing drugs in any manner. Nike plans to continue support of the Livestrong initiatives created to unite, inspire and empower people affected by cancer.”