_:vb50946174 . _:vb50946174 . _:vb50946174 . _:vb50946174 "A retinitis pigmentosa characterized by night blindness followed by progressive narrowing of visual fields and decline in visual acuity that has_material_basis_in mutation in KIAA1549 on chromosome 7q34."^^ . _:vb50946174 "url:https://pubmed.ncbi.nlm.nih.gov/30120214/"^^ . _:vb50946174 . _:vb50946174 .