Wilson said she was not battling the disease anymore.
The 58-year-old actress, who is married to Tom Hanks, said she is thankful to her family and colleagues for showering her with love through her difficult times, reported E! Online.
"I feel great. When you do Broadway, you have a family there and one at home as well. I had so much love through the process. I'm very thankful," she said at the red carpet of the 2015 Tony Awards.
Wilson, who resumed her role in stage production "Fish in the Dark" in May, was accompanied to the ceremony by her son Colin and was very excited to be at the show, which honoured the best in theatre.