PUBLISHED: 21:18 EST, 26 July 2012 | UPDATED: 21:19 EST, 26 July 2012
‘Good Morning America’ host Robin Roberts will likely take medical leave for a bone marrow transplant in August.
The anchor announced last month that she has MDS, a blood and bone marrow disease once known as preleukemia.
She said her ‘wonderful, wonderful friends’ Barbara Walters, Diane Sawyer and Katie Couric would step in for her, while she’s away from the ABC morning show.
Treatment: ‘Good Morning America’ host Robin Roberts, pictured, will likely take medical leave for a bone marrow transplant in August
On Thursday, Ms Roberts told reporters that her leave would ‘most likely’ start at the end of August or early September.
‘It’s fascinating-slash-scary how to prepare yourself for something like this,’ she said, appearing by satellite from ABC’s studios in New York.
When asked how she’s feeling, she replied, ‘I do go through moments of fatigue.’
Ms Roberts listed Barbara Walters, Diane Sawyer and Katie Couric among her ‘wonderful, wonderful friends at ABC News’ who will be subbing for her.
While talk-show host Kelly Ripa and panelists from the ABC talk show ‘The View’ were also named.
Citing the continuing resurgence of ‘Good Morning America’ against its long-dominant NBC rival ‘Today,’ the 51-year-old brightened.
Friends: Ms Roberts said her ‘wonderful, wonderful friends’ Barbara Walters, left, and Diane Sawyer, right, will be subbing for her
‘The run that we’ve had has truly energized me,’ she said. ‘It’s pretty good medicine, I gotta say, to be taking!’
In particular, ABC was crowing on Thursday that, for the first time in 17 years, ‘GMA’ had seized first place among total viewers – almost 4.6 million vs. 4.25 million for ‘Today’ – as well as tying ‘Today’ for first place in the 25- to 54-year-old demographic, each with 1.74 million.
ABC News President Ben Sherwood framed the victory in Olympic terms.
‘For 852 straight races, the ‘Today’ show won the gold medal, going back to 1995,’ he said.
Then, several weeks ago, ‘GMA’ snapped the ‘Today’ winning streak, ‘and stood there alone for the first time in 16 years to get its own gold medal.’
Replacement: Katie Couric, pictured, will be among the women filling in for Ms Roberts when she is on leave
‘And after 879 weeks running behind in younger viewers, 25-to-54,’ Sherwood went on, ‘GMA’ is ‘standing there at the gold-medal podium, unbelievably in an actual statistical tie with the previous champs.’
Meanwhile, Sherwood acknowledged a mistake ABC News made last week during coverage of the chilling ‘Dark Knight Rises’ shooting in Aurora, Colorado, that killed 12 people and injured dozens more.
ABC News Chief Investigative Correspondent Brian Ross speculated on the air about the political ties of the alleged gunman, James Holmes, erroneously identifying him as a member of the tea party.
‘It was a mistake,’ Mr Sherwood said. ‘We recognized it immediately. We owned it immediately. We corrected it immediately. We apologized for it.’
Declaring, ‘That particular moment didn’t live up to the standards and practices of ABC News,’ he said, ‘I take responsibility for it. The news division knows how displeased I am about it. And we will do everything we can to prevent it ever happening again.’