(WJW) – “Grey’s Anatomy” and “Euphoria” actor Eric Dane has revealed he has been diagnosed with amyotrophic lateral sclerosis, commonly known as ALS.

Dane opened up about the diagnosis during an interview with People, saying he is “grateful to have my loving family by my side as we navigate this next chapter.”

ALS, a neurogenerative disease also referred to as Lou Gehrig’s disease, is a “condition that affects how nerve cells communicate with your muscles,” the Cleveland Clinic’s website explains. It leads to worsening muscle weakness over time, and there is currently no cure.

The causes of ALS are still being studied, though it is believed that around 10% of cases are passed down through genetics, according to the Mayo Clinic’s website.

“Researchers continue to study possible causes of ALS. Most theories center on a complex interaction between genes and factors in the environment,” the site reads.

Dane, on behalf of his family, went on to request privacy at this time.

The 52-year-old California native is known for portraying Dr. Mark Sloan on “Grey’s Anatomy,” but also appeared in “Charmed,” “The Last Ship” and “Euphoria,” per IMDb. He’s set to return as his character of Cal Jacobs for the upcoming third season of “Euphoria.”

“I feel fortunate that I am able to continue working and am looking forward to returning to set of ‘Euphoria’ next week,” Dane told People during the interview.