Gary Sinise Announces His Son Mac Has Died Aged 33 – Story Of The Day!

In a poignant and deeply personal announcement, Gary Sinise—the acclaimed actor celebrated for his iconic role as Lieutenant Dan in Forrest Gump and his tireless advocacy for veterans—shared the news that his son, McCanna Anthony “Mac” Sinise, has passed away at the age of 33. The revelation, shared through the Gary Sinise Foundation and social media, has touched the hearts of millions, highlighting a five-and-a-half-year battle with an exceptionally rare and incurable disease. Mac’s journey was one defined not by the tragedy of his diagnosis, but by the extraordinary resilience and creative spirit he maintained until his final moments.

The Sinise family’s struggle began in the summer of 2018, a period that brought a staggering double blow to their household. On August 8, 2018, Mac was diagnosed with Chordoma, an ultra-rare form of bone cancer that affects only about one in a million people annually.¹ This devastating news arrived just three months after Mac’s mother, Moira, had been diagnosed with stage three breast cancer. While Moira’s treatment eventually proved successful and she entered remission, Mac’s condition followed a much more grueling and relentless path. Chordoma is notoriously difficult to treat, often originating in the spine or the base of the skull, and it began a progressive assault on Mac’s nervous system.²+1

Gary Sinise’s tribute to his son was raw and reflective of a father’s profound grief.³ He noted that while his family had spent decades supporting the families of “fallen heroes” through his foundation, the experience of losing his own child brought a new, searing level of heartbreak. “Like any family experiencing such a loss, we are heartbroken and have been managing as best we can,” Sinise wrote. He acknowledged the shared experience of loss that binds humanity together, expressing his deepest sympathies for anyone who has endured the death of a child or a loved one. The actor described the five-and-a-half-year fight as an “uphill battle,” yet he emphasized that Mac never wavered in his resolve to live a life of purpose.