_:vb50945486 "A congenital nystagmus that has_material_basis_in hemizygous of homoxygous mutation in GPR143 on chromosome Xp22.2."^^ . _:vb50945486 . _:vb50945486 . _:vb50945486 . _:vb50945486 "url:https://www.ncbi.nlm.nih.gov/pubmed/17516023"^^ . _:vb50945486 . _:vb50945486 .