PMID- 10634633 OWN - NLM STAT- MEDLINE DCOM- 20000114 LR - 20201208 IS - 0146-0404 (Print) IS - 0146-0404 (Linking) VI - 41 IP - 1 DP - 2000 Jan TI - A new Leu253Arg mutation in the RP2 gene in a Japanese family with X-linked retinitis pigmentosa. PG - 290-3 AB - PURPOSE: To identify the clinical findings in a Japanese family with X-linked retinitis pigmentosa associated with mutation in codon 253 (Leu253Arg) in the RP2 gene. METHODS: Case reports included clinical features and results of fluorescein angiography, electroretinogram, kinetic visual field testing, and DNA analysis. Two affected hemizygotes with retinitis pigmentosa associated with transversion mutations in codon 253 (Leu253Arg) of the RP2 gene and the obligate carriers were examined. RESULTS: A novel Leu253Arg mutation of the RP2 gene was found to cosegregate with retinal degeneration in two affected males and two carriers in female heterozygote in a Japanese family. The ophthalmic findings in hemizygote showed severe retinal degeneration. In the obligate carrier, mild chorioretinal degeneration was observed in both eyes but a tapetal-like reflex of the fundus was not apparent. CONCLUSIONS: The mutation at codon 253 of the RP2 gene is the first mutation reported in a Japanese family. It is concluded that the mutation of the RP2 gene also causes the X-linked retinitis pigmentosa in Japanese patients. FAU - Wada, Y AU - Wada Y AD - Department of Ophthalmology, Tohoku University School of Medicine, Sendai, Japan. yukow@oph.med.tohoku.ac.jp FAU - Nakazawa, M AU - Nakazawa M FAU - Abe, T AU - Abe T FAU - Tamai, M AU - Tamai M LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 RN - 0 (Eye Proteins) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Membrane Proteins) RN - 0 (Proteins) RN - 0 (RP2 protein, human) RN - 94ZLA3W45F (Arginine) RN - EC 3.6.1.- (GTP-Binding Proteins) RN - GMW67QNF9C (Leucine) SB - IM MH - Adult MH - Arginine/genetics MH - DNA Mutational Analysis MH - Electroretinography MH - *Eye Proteins MH - Female MH - Fluorescein Angiography MH - GTP-Binding Proteins MH - *Genetic Linkage MH - Humans MH - Intracellular Signaling Peptides and Proteins MH - Japan MH - Leucine/genetics MH - Male MH - Membrane Proteins MH - *Point Mutation MH - Proteins/*genetics MH - Retinitis Pigmentosa/ethnology/*genetics/pathology MH - Visual Fields MH - *X Chromosome EDAT- 2000/01/14 00:00 MHDA- 2000/01/14 00:01 CRDT- 2000/01/14 00:00 PHST- 2000/01/14 00:00 [pubmed] PHST- 2000/01/14 00:01 [medline] PHST- 2000/01/14 00:00 [entrez] PST - ppublish SO - Invest Ophthalmol Vis Sci. 2000 Jan;41(1):290-3.