Adam Yauch, known as Beastie Boys rapper MCA, has passed way.

As reported by TMZ, Adam Yauch of the Beastie Boys has lost his battle with cancer, he was only 47.

In 2009, Yauch announced he was being treated for a cancerous parotid gland and a lymph node. He has since undergone surgery and radiation therapy.

Yauch is survived by a wife and son.

MCA co-founded Beastie Boys in 1979 with Mike D, and Ad Rock. The group has won multiple Grammy awards and was inducted into the Rock and Roll Hall of Fame this year.

R.I.P. Adam Yauch aka MCA