Willie Garson’s cause of death has been revealed as pancreatic cancer.

The Sex and the City actor passed away on September 21 at the age of 57. It’s not known how long he was battling the illness for, but Garson’s cause of death was confirmed in an obituary published in New York Times.

‘William Garson Paszamant, better known as Willie Garson to his many fans and throughout the entertainment industry, noted actor of stage, film, and television, has died at age 57 at his home in Los Angeles. The cause was pancreatic cancer,’ read the star’s obituary.

In the hit HBO series, Grason played the role of close friend and confidante of Sarah Jessica Parker’s Carrie Bradshaw. Most recently, he had been working on the spin-off series And Just Like That. Garson also appeared in the follow-up films, Sex and the City, and Sex and the City 2. He was recently reprising the role in a reboot of the TV series, And Just Like That, which is currently in production.

Garson was also known as conman Mozzie in the TV series White Collar.

Garson’s television career has included parts on some of the most high-profile shows from the 90s and 2000s, including Twin Peaks, Friends, The X-Files, Buffy the Vampire Slayer, Ally McBeal, Boy Meets World and more.

His film credits include “KingPin” (1996), “There’s Something About Mary” (1998) and “Fever Pitch” (2005). His other film credits included “Soapdish” (1991), “Groundhog Day” (1993), “Being John Malkovich” (1999) and “Freaky Friday” (2003).

Most recently, Garson lent his voice to “Big Mouth” and had a recurring role on “Supergirl” from 2019 to 2020. Garson’s upcoming projects included “And Just Like That” and the series “Duke of the Valley.”