_:vb50942958 . _:vb50942958 "A retinitis pigmentosa that has_material_basis_in mutation in the IFT172 gene on chromosome 2p23."^^ . _:vb50942958 . _:vb50942958 "url:https://www.ncbi.nlm.nih.gov/pubmed/25168386"^^ . _:vb50942958 . _:vb50942958 . _:vb50942958 .