Adam "MCA" Yauch of the Beastie Boys will be unable attend the group's induction into the Rock and Roll Hall of Fame in Cleveland tonight, a representative tells Rolling Stone.

"Beastie Boys regret that Adam 'MCA' Yauch will be unable to join Mike 'Mike D' Diamond and Adam 'Adrock' Horovitz at the band's induction into the Rock n Roll Hall of Fame in April," reads the group's statement. "Mike, Adam and Adam are truly grateful for the honor but with only two of the three Beastie Boys attending, they will unfortunately not be able to perform at the ceremony."

Yauch revealed he had cancer** in a salivary gland in his neck in July 2009, which delayed the group's touring plans and scheduled September 2009 release of Hot Sauce Committee, Pt. 1. The album, now titled Hot Sauce Committee, Pt. 2, eventually came out in April 2011. Last year, Yauch announced that he was optimistic about treatment, but was not yet cancer-free.