This came out soon after Applegate, 36, was announced as one of several celebrities to take part in the upcoming "Stand Up To Cancer" telethon which is to be broadcasted simultaneously on US networks CBS, NBC and ABC on September 5. Meryl Streep, Jennifer Aniston and Charlize Theron are also involved in this campaign.

The actress is mostly known for her role as Kelly Bundy on the popular 80’s and 90’s Fox TV series, “Married With Children.” She made her return to television last fall on the ABC comedy “Samantha Who?” Applegate has won Emmy and Golden Globe nominations for her starring in the ABC comedy. She also won an Emmy for a guest role as Jennifer Aniston's sister on "Friends."

She also starred in movies like Jean-Marie Poiré’s “Just Visiting” (2001), “The Sweetest Thing” (2002), “Employee of the Month” (2004), “View From the top” (2003), where she met Gwyneth Paltrow. They are now good friends.

The statement also said that the actress is "following the recommended treatment of her doctors and will have a full recovery.”

The past few months have been difficult for Christina Applegate. In early June, an ex-boyfriend of hers, Lee Grivas, 26, was found dead after an apparent drug overdose. And now she just found out she has this terrible disease.