Roseanne Barr's revived sitcom has been axed after online outrage over an offensive tweet that attacked former Obama White House adviser Valerie Jarrett.
"Roseanne's Twitter statement is abhorrent, repugnant and inconsistent with our values, and we have decided to cancel her show," ABC Entertainment president Channing Dungey said in a statement.
The US comedian apologised to Jarrett for comparing her to an ape and linking her to the Muslim Brotherhood.
The TV star - who recently returned in a rebooted Roseanne - said she was leaving Twitter after sparking controversy with the post, which she subsequently deleted.
In a response to a thread alleging Jarrett helped to conceal CIA spying, Barr wrote that the black adviser was the "baby" of the Muslim Brotherhood and Planet Of The Apes.
Barr later wrote on Twitter: "I apologize. I am now leaving Twitter."
She added: "I apologize to Valerie Jarrett and to all Americans. I am truly sorry for making a bad joke about her politics and her looks. I should have known better. Forgive me - my joke was in bad taste."
Her tweet about Jarrett had prompted others to point out that the tweet was racist, with Barr replying: "Muslims r NOT a race." She told another follower: "It's a joke."
In another string of tweets, Barr connected Chelsea Clinton, daughter of Bill and Hillary, to Democratic donor George Soros.
She also retweeted people calling for the release of former English Defence League leader Tommy Robinson (real name Stephen Christopher Yaxley-Lennon), who has been jailed for contempt of court.
Meanwhile, Wanda Sykes, the actress and comedian credited as a consulting producer on Roseanne had announced her resignation from the show.
I will not be returning to @RoseanneOnABC.
— Wanda Sykes (@iamwandasykes) May 29, 2018
