LOS ANGELES (KTLA) -- Adam Yauch, one of the founding members of the hip hop trio the Beastie Boys, has died at the age of 47, after losing his battle with cancer.
In 2009, Yauch -- whose stage name was MCA -- announced that he was being treated for a cancerous salivary gland and lymph node.
He said his treatment would delay future shows and push back the release of a new album.
The Beastie Boys have not performed live since the summer of 2009.
Their most recent album, Hot Sauce Committee, Pt. 2, was released on May 3.
No music videos were made for the album due to Yauch's illness.
In 2011, it was reported that Yauch had beaten the disease, but reports were sadly exaggerated.
On the band's website he wrote: "Hello My Friends While I'm grateful for all the positive energy people are sending my way, reports of my being totally cancer free are exaggerated. I'm continuing treatment, staying optimistic and hoping to be cancer free in the near future."
Yauch co-founded the Beastie Boys with Mike "Mike D" Diamond and Adam "Ad-Rock" Horowitz in 1979.
They hit it big with their first album, Licensed to Ill, released in 1986. It was the first hip hop album to top the Billboard 200.
The group released eight albums together won multiple Grammys.
The Beastie Boys were recently inducted into the Rock & Roll Hall of Fame, but Yauch was unable to attend the ceremony.
On Saturday, May 5, HBO will air the Rock and Roll Hall of Fame ceremony honoring the group.
Yauch was also heavily involved in the movement to free Tibet.
He co-organized the Tibetan Freedom Concerts of the late Nineties, and became a vegan at the advice of his Tibetan doctors.
Yauch is survived by his wife and daughter.
Adam Yauch (aka MCA) of the Beastie Boys Dead at 47
Adam Yauch (aka MCA) was a co-founder of the Beastie Boys. (May 4, 2012)