Cargando…
Clinical and Genetic Findings in Korean Patients with Choroideremia
PURPOSE: We share and analyze the clinical presentations and genotypes of Korean male patients and female carriers who visited our clinic. METHODS: Six male patients and three female carriers with comprehensive ophthalmic examinations and next-generation sequencing were included. Detailed clinical f...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Korean Ophthalmological Society
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10427899/ https://www.ncbi.nlm.nih.gov/pubmed/37336512 http://dx.doi.org/10.3341/kjo.2023.0020 |
_version_ | 1785090346059825152 |
---|---|
author | Jo, Woo Gyeong Lee, Christopher Seungkyu Han, Jinu |
author_facet | Jo, Woo Gyeong Lee, Christopher Seungkyu Han, Jinu |
author_sort | Jo, Woo Gyeong |
collection | PubMed |
description | PURPOSE: We share and analyze the clinical presentations and genotypes of Korean male patients and female carriers who visited our clinic. METHODS: Six male patients and three female carriers with comprehensive ophthalmic examinations and next-generation sequencing were included. Detailed clinical features were identified using visual field (VF) test and multimodal imaging including color fundus photography, fundus autofluorescence (FAF), and optical coherence tomography (OCT). RESULTS: Six male patients were diagnosed with choroideremia at the median age of 25 years. Before genetic testing, three patients (50.0%) were clinically diagnosed with choroideremia, while the other three patients (50.0%) with retinitis pigmentosa. Patients showed different types of hemizygous CHM variants, including two nonsense variants, c.715C>T:p.(Arg239*) and c.799C>T:p.(Arg267*); two frameshift variants, c.1584_1587del:p.(Val529Hisfs*7) and c.403_404del:p.(Asp135Phefs*9); one splicing variant c.1511-28_1511-2del; and one exon 2–8 duplication. The latter three variants were novel. Two female carriers had heterozygous exon 2–8 duplication and the other one female carrier had heterozygous nonsense variant c.715C>T:p. (Arg239*). Fundus showed diffuse yellow-whitish scleral reflex and granular pigmented lesions. FAF showed multiple patchy hypofluorescence lesions, sparing macula. OCT showed thinning of outer nuclear layer, ellipsoid zone, retinal pigment epithelium layer, choroid thickness, interlaminar bridges, outer retinal tubulations, and microcysts in the inner nuclear layer. VF showed ring scotoma pattern with small amount of remaining central field. Asymptomatic female carriers showed variable fundus findings and mild changes in OCT. CONCLUSIONS: A detailed description of the genotypes with three novel mutations and phenotypes of six choroideremia patients and three CHM mutation female carriers are presented. |
format | Online Article Text |
id | pubmed-10427899 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Korean Ophthalmological Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-104278992023-08-17 Clinical and Genetic Findings in Korean Patients with Choroideremia Jo, Woo Gyeong Lee, Christopher Seungkyu Han, Jinu Korean J Ophthalmol Original Article PURPOSE: We share and analyze the clinical presentations and genotypes of Korean male patients and female carriers who visited our clinic. METHODS: Six male patients and three female carriers with comprehensive ophthalmic examinations and next-generation sequencing were included. Detailed clinical features were identified using visual field (VF) test and multimodal imaging including color fundus photography, fundus autofluorescence (FAF), and optical coherence tomography (OCT). RESULTS: Six male patients were diagnosed with choroideremia at the median age of 25 years. Before genetic testing, three patients (50.0%) were clinically diagnosed with choroideremia, while the other three patients (50.0%) with retinitis pigmentosa. Patients showed different types of hemizygous CHM variants, including two nonsense variants, c.715C>T:p.(Arg239*) and c.799C>T:p.(Arg267*); two frameshift variants, c.1584_1587del:p.(Val529Hisfs*7) and c.403_404del:p.(Asp135Phefs*9); one splicing variant c.1511-28_1511-2del; and one exon 2–8 duplication. The latter three variants were novel. Two female carriers had heterozygous exon 2–8 duplication and the other one female carrier had heterozygous nonsense variant c.715C>T:p. (Arg239*). Fundus showed diffuse yellow-whitish scleral reflex and granular pigmented lesions. FAF showed multiple patchy hypofluorescence lesions, sparing macula. OCT showed thinning of outer nuclear layer, ellipsoid zone, retinal pigment epithelium layer, choroid thickness, interlaminar bridges, outer retinal tubulations, and microcysts in the inner nuclear layer. VF showed ring scotoma pattern with small amount of remaining central field. Asymptomatic female carriers showed variable fundus findings and mild changes in OCT. CONCLUSIONS: A detailed description of the genotypes with three novel mutations and phenotypes of six choroideremia patients and three CHM mutation female carriers are presented. Korean Ophthalmological Society 2023-08 2023-06-19 /pmc/articles/PMC10427899/ /pubmed/37336512 http://dx.doi.org/10.3341/kjo.2023.0020 Text en © 2023 The Korean Ophthalmological Society https://creativecommons.org/licenses/by-nc/4.0/This is an Open Access journal distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) ) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Jo, Woo Gyeong Lee, Christopher Seungkyu Han, Jinu Clinical and Genetic Findings in Korean Patients with Choroideremia |
title | Clinical and Genetic Findings in Korean Patients with Choroideremia |
title_full | Clinical and Genetic Findings in Korean Patients with Choroideremia |
title_fullStr | Clinical and Genetic Findings in Korean Patients with Choroideremia |
title_full_unstemmed | Clinical and Genetic Findings in Korean Patients with Choroideremia |
title_short | Clinical and Genetic Findings in Korean Patients with Choroideremia |
title_sort | clinical and genetic findings in korean patients with choroideremia |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10427899/ https://www.ncbi.nlm.nih.gov/pubmed/37336512 http://dx.doi.org/10.3341/kjo.2023.0020 |
work_keys_str_mv | AT jowoogyeong clinicalandgeneticfindingsinkoreanpatientswithchoroideremia AT leechristopherseungkyu clinicalandgeneticfindingsinkoreanpatientswithchoroideremia AT hanjinu clinicalandgeneticfindingsinkoreanpatientswithchoroideremia |