Today, Good Morning America’s Robin Roberts announced on air that she has been diagnosed with myelodysplastic syndrome, a rare blood disorder that affects the bone marrow. The announcement comes five years after Roberts, now 51, entered remission after a battle with breast cancer. Though she was teary in delivering the news, Roberts remained characteristically positive about her prognosis, stating, ” “Bottom line: I am going to beat this. My doctors say it and my faith says it to me.”

She noted that she chose today to alert the public to her condition, because she begins pre-treatment this afternoon. She will undergo a round of drugs to prepare her bone marrow for a transplant. Roberts’ older sister is, fortunately, a perfect donor match. The transplant will take place some time this fall, after which Roberts will be on leave for several months while her progress is monitored.

ABC News president Ben Sherwood heralded Roberts’ courage and offered the network’s support:

We love Robin, the heart and soul of ABC News, and we’ll stand arm in arm with her as she fights this new battle. She is the captain of our GMA team; she has been the keystone of our recent victories; and she will lead the program for many years to come.

The news, which has been making the rounds all morning, has saddened viewers and colleagues alike, but here’s hoping for a full and speedy recovery.

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