Matt Damon's father dies of cancer at 74; had blood disease

The Associated Press Published 12:49 p.m. ET Dec. 23, 2017 | Updated 1:03 p.m. ET Dec. 23, 2017

BOSTON (AP) — Matt Damon's father has died in Massachusetts at age 74 after a long battle with cancer.

Damon publicist Jennifer Allen says Kent Damon died on Dec. 14. She said Saturday he died of complications from multiple myeloma, a rare blood disease that affects bone marrow.

Kent Damon's condition had worsened over the past few months.

Matt Damon has worked to raise awareness and money for cancer research and treatment since his father was diagnosed in 2010. The Good Will Hunting and Jason Bourne star hosted private fundraisers in Los Angeles and attended benefits for the Massachusetts General Hospital's Cancer Center in Boston.

Matt Damon, from left, Julianne Moore and George Clooney

It was an A-list affair at George Clooney's Los Angeles premiere of 'Suburbicon' on Sunday night. Matt Damon and Julianne Moore joined their director on the red carpet. Who else was there? Jordan Strauss, Jordan Strauss/Invision/AP

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WESTWOOD, CA - OCTOBER 22: George Clooney, Amal Clooney

Of course, Clooney brought his wife, Amal. Steve Granitz, WireImage

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WESTWOOD, CA - OCTOBER 22: Luciana Barroso and Matt

Matt Damon brought his wife, Luciana Barroso. Kevin Winter, Getty Images

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Actress Julianne Moore arrives for the Premiere of

Julianne Moore wore a stunning caped sheath. Mark Ralston, AFP/Getty Images

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WESTWOOD, CA - OCTOBER 22: Julianne Moore arrives

Please note the dramatic back. Steve Granitz, WireImage

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Amal Clooney, George Clooney and Baria Alamuddin (R)

A family moment: George Clooney posed with Amal and his mother-in-law, Baria Alamuddin. Mark Ralston, AFP/Getty Images

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WESTWOOD, CA - OCTOBER 22: Julianne Moore and George

"What's that, George?" Frederick M. Brown, Getty Images

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WESTWOOD, CA - OCTOBER 22: George Clooney at the Premiere

Clooney took time to sign autographs and pose for photos with fans. Kevin Winter, Getty Images

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WESTWOOD, CA - OCTOBER 22: Karimah Westbrook at the

We loved 'Suburbicon' star Karimah Westbrook's floral gown. Frederick M. Brown, Getty Images

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Amal Clooney arrives at the LA Premiere of "Suburbicon"

Here's a closer look at Amal's strapless blue and white number. Jordan Strauss, Invision/AP

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WESTWOOD, CA - OCTOBER 22: Tony Espinosa, Matt Damon,

That's a wrap! 'Suburbicon' stars Tony Espinosa, Matt Damon, Julianne Moore, George Clooney, Karimah Westbrook and Leith M. Burke took a group snap on the red carpet. Kevin Winter, Getty Images

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