_:vb50942971 "url:https://www.ncbi.nlm.nih.gov/pubmed/20673862"^^ . _:vb50942971 . _:vb50942971 . _:vb50942971 "A retinitis pigmentosa that has_material_basis_in mutation in the IMPG2 gene on chromosome 3q12.3."^^ . _:vb50942971 . _:vb50942971 . _:vb50942971 .