_:vb50942946 . _:vb50942946 . _:vb50942946 "A retinitis pigmentosa that has_material_basis_in mutation in the PRPF3 gene on chromosome 1q21."^^ . _:vb50942946 . _:vb50942946 . _:vb50942946 "url:https://www.ncbi.nlm.nih.gov/pubmed/11773002"^^ . _:vb50942946 .