_:vb50943768 "url:https://www.ncbi.nlm.nih.gov/pubmed/2168777"^^ . _:vb50943768 . _:vb50943768 . _:vb50943768 . _:vb50943768 . _:vb50943768 "A xeroderma pigmentosum characterized by involvement of the central and peripheral nervous systems in addition to cutaneous lesions that has_material_basis_in caused by homozygous or compound heterozygous mutation in the XPA gene on chromosome 9q22."^^ . _:vb50943768 "url:https://www.ncbi.nlm.nih.gov/pubmed/2234061"^^ . _:vb50943768 .