Related: Photos of Robin Roberts | Robin Roberts enters hospital for bone marrow transplant | Lucimarian Roberts, Robin Roberts' mother, dies | Robin Roberts GMA leave starts Thurs. due to mom's illness | GMA host Robin Roberts has MDS | What is MDS?
Roberts' sister, Sally-Ann, was the donor.
Before the surgery, Roberts taped a public service announcement for Be the Match, BeTheMatch.org, a nonprofit organization that provides a registry for those willing to donate bone marrow and umbilical cord blood to those in need of transplants. Be the Match connects donors with patients, educates health care professionals and performs bone marrow research.
Roberts underwent the transplant after being diagnosed with MDS, a rare blood disorder. She's been on medical leave from ABC's Good Morning America since the end of August, and is recovering.