 Typically, the only immortal human cells are our germline and most cancers.In 1999, Andrews founded Sierra Sciences in Reno, Nevada, to capitalize on his discoveries at Geron, with the specific goal of curing human aging.Underwritten by investors Richard Offerdahl and Pierluigi Zappacosta, Andrews assembled a team to search for a small molecule that would bind to the telomerase repressor, causing the body to constitutively express telomerase in the presence of that molecule.