Aerosmith bassist Tom Hamilton is recovering from radiation treatment for throat cancer and will skip the beginning of the band's upcoming tour, the band's publicist said.

Hamilton, 55, will be recovering with his family after a seven-week radiation treatment he just completed, publicist Marcee Rondan said Thursday. He will join the "Route of All Evil" tour in mid-October.

Rondan said she had no further information about Hamilton's condition.

David Hull, a longtime friend of the band who played in the Joe Perry Project, will fill in as bassist, she said.

The tour is set to launch Sept. 5 in Columbus, Ohio, according to the band's Web site.

Hamilton has played with Aerosmith since the band's inception in 1969, according to the Web site.