Patti LuPone has issued a public apology after more than 500 theater professionals signed an open letter condemning her recent comments about fellow performers Kecia Lewis and Audra McDonald.

In an open letter signed by some of Broadway's biggest stars, LuPone was accused of bullying, harassment, and “racialized disrespect.”

The 500+ signatories, which include Tony winners Wendell Pierce, Maleah Joi Moon, and James Monroe Iglehart, call on the American Theatre Wing and the Broadway League to take immediate action, not only in response to LuPone’s comments but in “establishing a broader standard of accountability moving forward.”

McDonald had already addressed LuPone’s original comments in an interview with CBS Sunday Mornings, claiming that the two had not spoken in 11 years and she had no idea why LuPone would be upset with her.