Robin Roberts to Take Leave of Absence From Good Morning America

Robin Roberts attends the revealing of the "Oscar's Red Carpet Live" hosts on "Good Morning America" at ABC Studios on February 13, 2012 in New York City.
Photo: Janette Pellegrini/Getty Images

Roberts told journalists Thursday that she expects to step away from her hosting duties in late August or early September when she will receive a bone marrow transplant. Roberts announced in mid-June that she is fighting the rare blood and bone marrow disorder known as MDS, or myelodysplastic syndrome, a condition caused by her treatment for breast cancer five years ago. Reuters reports that Roberts said she's experienced "moments of fatigue" on air recently, yet she also remarked that GMA's first victory in sixteen years over NBC's Today in the great morning TV war energized her.  "That's pretty good medicine," she said. A triumvirate of prominent ABC female stars —  Barbara Walters, Diane Sawyer, and Katie Couric — have offered to take turns covering for Roberts during her absence.