He emphasized his perseverance moving forward, saying, “I’m fighting as much as I can,” though he admitted, “There’s so much about it that is out of my control.”

"I feel like maybe a couple, few more months, and I won't have my left hand either," the 'Grey's Anatomy' alum said, adding that he worried about losing the use of his legs, in a sobering interview that aired on Monday's 'Good Morning America.