{"title":"新型 RPE65 变体 p.(Ala391Asp) 在 Leber 先天性无脑症中的应用:日本的病例报告和文献综述","authors":"Natsuki Higa, Takaaki Hayashi, Kei Mizobuchi, Maki Iwasa, Shingo Kubota, Kazuki Kuniyoshi, Shuhei Kameya, Hiroyuki Kondo, Mineo Kondo, Tadashi Nakano","doi":"10.3389/fmed.2024.1442107","DOIUrl":null,"url":null,"abstract":"IntroductionIn Japan, inherited retinal dystrophy caused by biallelic variants of the <jats:italic>RPE65</jats:italic> gene is exceedingly rare. The purpose of this study was to describe a Japanese male patient with a novel variant in <jats:italic>RPE65</jats:italic> associated with Leber congenital amaurosis (LCA).Case reportThe patient, diagnosed with LCA, exhibited infantile nystagmus and reported experiencing night blindness since early childhood. At 27 years of age, the patient underwent an ophthalmologically evaluation. Corrected visual acuity was Snellen equivalent 20/133 in the right eye and Snellen equivalent 20/100 in the left eye. Fundus examination revealed alterations in the retinal pigment epithelium characterized by hypopigmentation and narrowing of retinal vessels. Fundus autofluorescence imaging demonstrated a generally diminished autofluorescent signal. Full-field electroretinography identified a generalized dysfunction of both rod and cone systems in each eye. Whole exome sequencing identified a novel missense variant in <jats:italic>RPE65</jats:italic> (NM_000329.3): c.1172C &gt; A p.(Ala391Asp), which was classified as pathogenic, as well as a recurrent variant p.(Arg515Trp).ConclusionThis study provides valuable insights into the genotype–phenotype correlation of <jats:italic>RPE65</jats:italic>-associated LCA in Japanese patients, with critical implications for enhanced diagnostic accuracy and informed therapeutic decisions.","PeriodicalId":12488,"journal":{"name":"Frontiers in Medicine","volume":null,"pages":null},"PeriodicalIF":3.1000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A novel RPE65 variant p.(Ala391Asp) in Leber congenital amaurosis: a case report and literature review in Japan\",\"authors\":\"Natsuki Higa, Takaaki Hayashi, Kei Mizobuchi, Maki Iwasa, Shingo Kubota, Kazuki Kuniyoshi, Shuhei Kameya, Hiroyuki Kondo, Mineo Kondo, Tadashi Nakano\",\"doi\":\"10.3389/fmed.2024.1442107\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"IntroductionIn Japan, inherited retinal dystrophy caused by biallelic variants of the <jats:italic>RPE65</jats:italic> gene is exceedingly rare. The purpose of this study was to describe a Japanese male patient with a novel variant in <jats:italic>RPE65</jats:italic> associated with Leber congenital amaurosis (LCA).Case reportThe patient, diagnosed with LCA, exhibited infantile nystagmus and reported experiencing night blindness since early childhood. At 27 years of age, the patient underwent an ophthalmologically evaluation. Corrected visual acuity was Snellen equivalent 20/133 in the right eye and Snellen equivalent 20/100 in the left eye. Fundus examination revealed alterations in the retinal pigment epithelium characterized by hypopigmentation and narrowing of retinal vessels. Fundus autofluorescence imaging demonstrated a generally diminished autofluorescent signal. Full-field electroretinography identified a generalized dysfunction of both rod and cone systems in each eye. Whole exome sequencing identified a novel missense variant in <jats:italic>RPE65</jats:italic> (NM_000329.3): c.1172C &gt; A p.(Ala391Asp), which was classified as pathogenic, as well as a recurrent variant p.(Arg515Trp).ConclusionThis study provides valuable insights into the genotype–phenotype correlation of <jats:italic>RPE65</jats:italic>-associated LCA in Japanese patients, with critical implications for enhanced diagnostic accuracy and informed therapeutic decisions.\",\"PeriodicalId\":12488,\"journal\":{\"name\":\"Frontiers in Medicine\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2024-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Frontiers in Medicine\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.3389/fmed.2024.1442107\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MEDICINE, GENERAL & INTERNAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers in Medicine","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.3389/fmed.2024.1442107","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MEDICINE, GENERAL & INTERNAL","Score":null,"Total":0}
A novel RPE65 variant p.(Ala391Asp) in Leber congenital amaurosis: a case report and literature review in Japan
IntroductionIn Japan, inherited retinal dystrophy caused by biallelic variants of the RPE65 gene is exceedingly rare. The purpose of this study was to describe a Japanese male patient with a novel variant in RPE65 associated with Leber congenital amaurosis (LCA).Case reportThe patient, diagnosed with LCA, exhibited infantile nystagmus and reported experiencing night blindness since early childhood. At 27 years of age, the patient underwent an ophthalmologically evaluation. Corrected visual acuity was Snellen equivalent 20/133 in the right eye and Snellen equivalent 20/100 in the left eye. Fundus examination revealed alterations in the retinal pigment epithelium characterized by hypopigmentation and narrowing of retinal vessels. Fundus autofluorescence imaging demonstrated a generally diminished autofluorescent signal. Full-field electroretinography identified a generalized dysfunction of both rod and cone systems in each eye. Whole exome sequencing identified a novel missense variant in RPE65 (NM_000329.3): c.1172C > A p.(Ala391Asp), which was classified as pathogenic, as well as a recurrent variant p.(Arg515Trp).ConclusionThis study provides valuable insights into the genotype–phenotype correlation of RPE65-associated LCA in Japanese patients, with critical implications for enhanced diagnostic accuracy and informed therapeutic decisions.
期刊介绍:
Frontiers in Medicine publishes rigorously peer-reviewed research linking basic research to clinical practice and patient care, as well as translating scientific advances into new therapies and diagnostic tools. Led by an outstanding Editorial Board of international experts, this multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics, clinicians and the public worldwide.
In addition to papers that provide a link between basic research and clinical practice, a particular emphasis is given to studies that are directly relevant to patient care. In this spirit, the journal publishes the latest research results and medical knowledge that facilitate the translation of scientific advances into new therapies or diagnostic tools. The full listing of the Specialty Sections represented by Frontiers in Medicine is as listed below. As well as the established medical disciplines, Frontiers in Medicine is launching new sections that together will facilitate
- the use of patient-reported outcomes under real world conditions
- the exploitation of big data and the use of novel information and communication tools in the assessment of new medicines
- the scientific bases for guidelines and decisions from regulatory authorities
- access to medicinal products and medical devices worldwide
- addressing the grand health challenges around the world