Identification of Mutations That Lead to Aplasia Cutis Congenita in Families and Isolated Cases and Studies of Cellular and Molecular Mechanisms

Aplasia cutis congenita (ACC) or congenital scalp defect is a very rare disorder that affects bone and skin. The definition for ACC is the localized absence of (normal) skin at the time of birth (congenital). The skin appears thinner and the underlying structures are visible. We study mostly the isolated form of ACC with the lesion often being at the vertex of the skull (at or close to the top of the skull). The bone underlying the lesion is sometimes thinner as well. For this study we will: * Send out study participation kits and consent by phone * Collect a saliva sample from eligible indi…