With an estimated 1.6 million Americans diagnosed in 2017 alone, cancer not only impacts those diagnosed but their friends and family as well. In recognition of World Cancer Day on Sunday, Feb. 4, Merck (NYSE: MRK), known as MSD outside the United States and Canada, along with Pro Football Hall of Famer Jim Kelly is asking all Americans to join the Your Cancer Game Plan Challenge, a social awareness effort to help raise funds to support cancer patient organizations.