Retinitis Pigmentosa 9, also known as rp9, is related to retinitis pigmentosa 18 and retinitis pigmentosa 10. An important gene associated with Retinitis Pigmentosa 9 is RP9 (RP9 Pre-MRNA Splicing Factor). Affiliated tissues include eye and retina, and related phenotypes are cataract and macular atrophy