_:vb50942828 . _:vb50942828 "A cataract that has_material_basis_in heterozygous mutation in the crystallin beta-A4 gene (CRYBA4) on chromosome 22q12."^^ . _:vb50942828 . _:vb50942828 . _:vb50942828 "url:https://www.ncbi.nlm.nih.gov/pubmed/16960806"^^ . _:vb50942828 . _:vb50942828 .