During a sit-down interview with Diane Sawyer on "Good Morning America," Eric Dane opened up about his harrowing ALS diagnosis and navigating the heartbreaking effects.

Eric Dane is speaking out about his “sobering” experience with Amyotrophic Lateral Sclerosis (ALS), also known as Lou Gehrig’s disease. The Grey’s Anatomy alum first shared his diagnosis in April, writing at the time that he felt “fortunate that I am able to continue working and am looking forward to returning to set [sic] of Euphoria next week.”