Eric Dane, appearing on today’s Good Morning America, said in a taped interview with Diane Sawyer that due to ALS he no longer has use of his right arm and that he expects to lose use of his left hand.

Eric Dane is sharing the first heartbreaking details about the challenges stemming from his ALS battle. The "Grey's Anatomy" star, 52, sat down for his first TV interview since going public with the illness,