*Robin Roberts has been receiving support from her colleagues, fans, and even the White House  following news that she has been diagnosed with a blood and bone barrow disease once known as preleukemia.


The “Good Morning America” host received a tweet from First Lady Michelle Obama stating: “Barack and I have you in our prayers. We believe in you and thank you for bringing awareness and hope to others.”

Roberts is expected to get a bone marrow transplant sometime this fall, with her older sister Sally Ann volunteering to be a donor.

Speaking on Good Morning America on Monday, Roberts defiantly stated, “My doctors tell me I’m going to beat this, and I know it’s true.”

Her sister Sally Ann said she was thankful she has the marrow that Robin can use, saying, “I’m just so very grateful that I did match her because there are many, many people right now who are dying for a match and have no one in their family who are eligible.”

Robin is understood to have developed the disease – known as MDS – as a result of her breast cancer treatment a couple of years ago, though Dr. Richard Besser – ABC’’s medical correspondent – says the manner of transmission is so rare, it only affects a few hundred people per year.