_:vb50942975 . _:vb50942975 . _:vb50942975 "url:https://www.ncbi.nlm.nih.gov/pubmed/21310491"^^ . _:vb50942975 . _:vb50942975 . _:vb50942975 . _:vb50942975 "A retinitis pigmentosa that has_material_basis_in mutation in the CLRN1 gene on chromosome 3q25."^^ .