_:vb50942827 . _:vb50942827 . _:vb50942827 "A cataract that has_material_basis_in heterozygous or homozygous mutation in the beta-B1 crystallin gene (CRYBB1) on chromosome 22q12."^^ . _:vb50942827 . _:vb50942827 . _:vb50942827 . _:vb50942827 "url:https://www.ncbi.nlm.nih.gov/pubmed/12360425"^^ .