A television show on AMC hosted by the comedian Chris Hardwick will not air as scheduled, the network said on Saturday, following allegations from an ex-girlfriend, Chloe Dykstra, that he had emotionally and sexually abused her.

In an essay posted on Medium on Thursday, Ms. Dykstra, an actress and model, said she had been in a three-year relationship with a man who repeatedly sexually assaulted her and enforced restrictive rules. She did not name Mr. Hardwick specifically. In a statement on Saturday he said, “I’m devastated to read that she is now accusing me of conduct that did not occur.”

AMC said in a statement that Mr. Hardwick’s show, “Talking With Chris Hardwick,” would not go on the air. The second season of the show had been scheduled to debut on Sunday.

“We have had a positive working relationship with Chris Hardwick for many years,” the network said. “We take the troubling allegations that surfaced yesterday very seriously. While we assess the situation, ‘Talking With Chris Hardwick’ will not air on AMC.”