_:vb50945475 . _:vb50945475 . _:vb50945475 . _:vb50945475 "url:https://www.ncbi.nlm.nih.gov/pubmed/22065086"^^ . _:vb50945475 "A congenital nystagmus that has_material_basis_in heterozygous mutation in a region of chromosome 1q31.3-q32.1."^^ . _:vb50945475 . _:vb50945475 .