Microsoft co-founder Paul Allen, the world's 37th richest man, has promised to donate the majority of his $13.5 billion fortune to charity.
Allen, who was previously diagnosed and treated for non-Hodgkin's lymphoma, said that he planned to leave provisions for his philanthropic work to continue after his death.
"I want to announce that my philanthropic efforts will continue after my lifetime," he said. "I've planned for many years now that the majority of my estate will be left to philanthropy to continue the work of the foundation and fund non-profit scientific research."
His announcement comes after former Microsoft CEO and co-founder Bill Gates and investment tycoon Warren Buffet implored billionaires to donate at least half of their wealth to charity.
Allen, who has already donated around $1 billion to charity over his life, said: “As our philanthropy continues in the years ahead, we will look for new opportunities to make a difference in the lives of future generations.”
He said that a significant portion of his wealth will be donated to continue the work of his own Allen Foundation and to fund "game-changing" scientific research projects.