Expansion of the genotypic and phenotypic spectrum of xeroderma pigmentosum in Chinese population

Abstract

Xeroderma pigmentosum (XP) is a rare genodermatosis characterized by exaggerated sunburn reactions, freckle‐like pigmentation, and a high possibility of developing cutaneous tumors. XP comprised seven complementation groups (from XP‐A to XP‐G) and a variant form XP‐V.