Fans are heartbroken after hearing the news that 'Grey's Anatomy' star Eric Dane has passed away. The actor earned major recognition during his seven-season run on the hit series, where he played Dr. Mark Sloan - aka McSteamy.RELATED: Prayers Up! Florida Rapper Lil Poppa Has Reportedly Passed Away At Age 25Details On Eric Dane's Untimely PassingPEOPLE reports that Eric Dane passed away on Thursday, February 19, at 53 years old. His death comes just ten months after he publicly shared his diagnosis in April 2025 of amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's Disease.