On Tuesday’s episode, Dane’s physician, Dr. Merit Cudkowicz, a neurologist and leading ALS researcher, appeared alongside him to insist that there’s hope for people with the disease, even as she warn...

“My left side is functioning, my right side has completely stopped working,” the Grey’s Anatomy alum said, after sharing he only had “one functioning arm,” in an interview with Diane Sawyer that aired...

"I'll never forget those three letters," he said of the diagnosis.