_:vb50942795 "url:https://www.ncbi.nlm.nih.gov/pubmed/11772997"^^ . _:vb50942795 . _:vb50942795 . _:vb50942795 . _:vb50942795 . _:vb50942795 . _:vb50942795 "A cataract that has_material_basis_in heterozygous mutation in the MAF gene on chromosome 16q23."^^ .