_:vb50939232 . _:vb50939232 . _:vb50939232 . _:vb50939232 . _:vb50939232 . _:vb50939232 "A familial hypocalciuric hypercalcemia that has_material_basis_in heterozygous mutation in the AP2S1 gene on chromosome 19q13."^^ . _:vb50939232 "url:https://www.ncbi.nlm.nih.gov/pubmed/23222959"^^ .