Gary Sinise shares tribute to late son Mac, who died from cancer at 33 Mac was diagnosed in 2018, the same year Sinise's wife, actress Moira Harris, was diagnosed with Stage 3 breast cancer.

Sinse has been married to his wife Moira Harris since 1981, and they have three children together—one of whom tragically died from the disease earlier this year.

Michael Tullberg/Getty Moira Sinise and Gary Sinise attend the ceremony honoring Sinise with a star on the Hollywood Walk Of Fame on April 17, 2017 in Hollywood, California.

Gary Sinise got candid about his late son McCanna’s illness just weeks before his death. McCanna — also affectionately known as Mac — died on Jan. 5 at the age of 33 after a 5½-year battle ...

"My wife [Moira Harris] had been diagnosed with breast cancer. My son was diagnosed with this very rare cancer you know, within two months of each other," the actor revealed.

And while the actor shared his son "knew from the beginning that he had an uphill battle to fight," the situation was made even tougher by the fact that Gary's wife, Moira Harris, was concluding ...

Gary Sinise opens up about leaving Hollywood and losing his son to cancer, saying, "I just want to be around family." The 'Forrest Gump' actor, 70, who moved to Tennessee nearly two years ago ...

Gary Sinise discussed the decision to step away from acting to be with his family during difficult times, reflecting on his late son's cancer diagnosis: 'I had to stop.' ...

In a recent interview with Fox News Digital, Gary Sinise shared what he is thankful for this Thanksgiving, explaining he is grateful for his support system following his son's death.

Gary Sinise is opening up about his decision to step back from acting as his son battled cancer.

The Marine Corps flag was adopted on January 18, 1939. (Photo by Ross Lewis/Getty Images) Gary Sinise and Moira Harris in 2017 Dennis Quaid new album Fallen ...