This issue has variants.
in Marvel Must Haves: Astonishing X-Men #1-3 (Marvel, 2004 series) #[nn] (2004) [cover]
in Astonishing X-Men Director's Cut (Marvel, 2004 series) #1 ([August] 2004) [cover]
in Astonishing X-Men Saga (Marvel, 2006 series) #[nn] (2006)
in Giant-Size Astonishing X-Men (Marvel, 2008 series) #1 (July 2008), #1 (July 2008)
in Astonishing X-Men MGC (Marvel, 2011 series) #1 (May 2011)
in Astonishing X-Men (Marvel, 2006 series) #1"Gifted" is only indicated to be the title of the issue, but Marvel solicitations have used it as the title for the entire story arc.