Sean Parker is the tech billionaire behind Napster and a founding partner of Facebook who recently turned his attention to disrupting the movie biz with The Screening Room. Now he has a new frontier in his sights: cancer. Parker said today he is donating $250 million to six cancer centers in the U.S. to fund immune therapy. It’s the largest single donation ever for cancer immunotherapy, according to USA Today. Jeffrey Bluestone, new head of the San Francisco-based Parker Institute for Cancer Immunotherapy, told the paper the money will go toward “high risk best ideas that may not get funded by the government.”

Parker and partner Prem Akkaraju’s The Screening Room, meanwhile, is taking meetings with exhibitors at the CinemaCon confab in Las Vegas. They come a month after the pair’s initiative was unveiled with a plan for day-and-date releases of first-run films at home at a $50 price point.