British-American rock band Fleetwood Mac has announced the cancellation of its upcoming tour in Australia and New Zealand due to John McVie’s cancer diagnosis. McVie, the band’s bassist and co-founder, will undergo treatment for his condition during the time the band was supposed to be touring between November and December.

"We are sorry to not be able to play these Australian and New Zealand dates,” the band said in a statement. “We hope our Australian and New Zealand fans as well as Fleetwood Mac fans everywhere will join us in wishing John and his family all the best.”

Fleetwood Mac, formed in London in 1967 by guitarist Peter Green, recently completed the European leg of its worldwide tour. The 14 shows throughout Australia and New Zealand were scheduled to begin on Nov. 10 and conclude on Dec. 7.

McVie’s last name, along with drummer Mick Fleetwood's, became the inspiration for the band’s name. McVie's work with Fleetwood Mac earned him a spot in the Rock and Roll Hall of Fame in 1998. The band did not specify the type of cancer for which he is being treated.