Mccanna anthony sinise twitter account

Gary Sinise's son, McCanna Anthony "Mac" Sinise, has died. He was

Gary, 68, shared the news of Mac's death in a statement shared to the Gary Sinise Foundation's website and his Instagram page Tuesday, writing that Mac died from cancer on Jan.

5.

The actor wrote that Mac had been diagnosed with a "very rare cancer" known as Chordoma on August 8, The disease originates in the spine and affects around people in the U.S. each year, as he wrote.

The Forrest Gump star wrote that Mac's diagnosis came just months after his wife Moira Harris received a stage three breast cancer diagnosis.

While Moira went into remission and has remained cancer-free following treatment, Gary wrote that Mac's disease spread over time and "disabled him more and more as time went on."

Mac's diagnosis came several months after he joined the Gary Sinise Foundation, a charity tha