Xeroderma pigmentosum complementation group F (XPF) is a generally milder subtype of xeroderma pigmentosum (XP; see this term), a rare photodermatosis predisposing to skin cancers. The disease is Orphanet rare-disease nomenclature term Orphanet_276264 (Xeroderma pigmentosum complementation group F). Also known as: XPF.