The 65-year-old 'Avengers' star is fronting the In Play advertisements for the St Baldrick's Foundation and Stand Up To Cancer charities, which aim to raise the profile of kids cancers and the importance of specialist care for sick youngsters for a chance at better survival rates, reported CNN online.
Jackson, who appears in the Psas alongside four young cancer patients, said, "When I was a child in the 1950s, most kids who got diagnosed with cancer had little chance of survival. Now, there is hope.