American actor Eric Dane, best known for portraying the charismatic surgeon Mark Sloan on Grey’s Anatomy, has died at the age of 53 following a battle with motor neurone disease, also known as amyotrophic lateral sclerosis (ALS).
Dane rose to international fame in 2006 when his character first appeared at the fictional Seattle Grace Hospital. Introduced as the former friend—and rival—of neurosurgeon Derek Shepherd, played by Patrick Dempsey, Mark Sloan quickly became a fan favorite. His confident charm and complicated personal life earned him the nickname “McSteamy,” cementing Dane’s status as a television sex symbol during the show’s peak ratings years.
Initially intended as a guest role, Sloan’s popularity propelled Dane into the main cast, where he remained through the ninth season in 2012. One of the character’s most memorable storylines involved his on-again, off-again romance with Lexie Grey, played by Chyler Leigh, culminating in an emotional arc that resonated strongly with viewers.
Before his breakthrough, Dane built a steady résumé with appearances in series such as Charmed and earlier guest roles across 1990s television. Following his Grey’s Anatomy success, he headlined the naval drama The Last Ship and later delivered a darker performance as Cal Jacobs in the teen drama Euphoria, demonstrating notable range beyond his romantic-lead image.
Dane publicly disclosed his ALS diagnosis last year, bringing attention to a progressive neurological disease that affects nerve cells controlling voluntary muscles. Health experts note that increased visibility from public figures often boosts awareness and research funding for rare conditions.
Colleagues and fans have flooded social media with tributes, many recalling Dane’s professionalism and humor on set. A representative industry voice described him as “a performer who understood both the glamour and the emotional weight of television drama.”
Born in San Francisco in 1972, Dane discovered acting in high school after initially focusing on water polo. He is survived by his wife, actor Rebecca Gayheart, and their two daughters.
His portrayal of Mark Sloan remains one of modern television’s most recognizable characters—evidence of a career that blended mainstream appeal with enduring fan loyalty.