After sharing her battle with leukemia, Sadie Keller, now cancer-free, founded a non-profit giving gifts to children and fighting from Congress to the White House for more pediatric cancer research funding.
About NBC Nightly News with Lester Holt
Watch "NBC Nightly News with Lester Holt," providing reports and analysis of the day's most newsworthy national and international events. See More
Check out more stuff on Yahoo View