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Retrospective Natural History Study of RPGR-Related Cone- and Cone-Rod Dystrophies While Expanding the Mutation Spectrum of the Disease

Variants in the X-linked retinitis pigmentosa GTPase regulator gene (RPGR) and, specifically, in its retinal opening reading frame-15 isoform (RPGR(ORF15)) may cause rod-cone (RCD), cone, and cone-rod dystrophies (CDs and CRDs). While RPGR-related RCDs have been frequently evaluated, the characteris...

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Autores principales: Nassisi, Marco, De Bartolo, Giuseppe, Mohand-Said, Saddek, Condroyer, Christel, Antonio, Aline, Lancelot, Marie-Elise, Bujakowska, Kinga, Smirnov, Vasily, Pugliese, Thomas, Neidhardt, John, Sahel, José-Alain, Zeitz, Christina, Audo, Isabelle
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9266815/
https://www.ncbi.nlm.nih.gov/pubmed/35806195
http://dx.doi.org/10.3390/ijms23137189
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author Nassisi, Marco
De Bartolo, Giuseppe
Mohand-Said, Saddek
Condroyer, Christel
Antonio, Aline
Lancelot, Marie-Elise
Bujakowska, Kinga
Smirnov, Vasily
Pugliese, Thomas
Neidhardt, John
Sahel, José-Alain
Zeitz, Christina
Audo, Isabelle
author_facet Nassisi, Marco
De Bartolo, Giuseppe
Mohand-Said, Saddek
Condroyer, Christel
Antonio, Aline
Lancelot, Marie-Elise
Bujakowska, Kinga
Smirnov, Vasily
Pugliese, Thomas
Neidhardt, John
Sahel, José-Alain
Zeitz, Christina
Audo, Isabelle
author_sort Nassisi, Marco
collection PubMed
description Variants in the X-linked retinitis pigmentosa GTPase regulator gene (RPGR) and, specifically, in its retinal opening reading frame-15 isoform (RPGR(ORF15)) may cause rod-cone (RCD), cone, and cone-rod dystrophies (CDs and CRDs). While RPGR-related RCDs have been frequently evaluated, the characteristics and progression of RPGR-related CD/CRDs are largely unknown. Therefore, the goal of our work was to perform genotype–phenotype correlations specifically in RPGR(ORF15)-related CD/CRDs. This retrospective longitudinal study included 34 index patients and two affected relatives with a molecular diagnosis of RPGR-related CD/CRDs. Patients were recruited at the “Quinze-Vingts” Hospital, Paris, France and screened for mutations in RPGR(ORF15) at the Institut de la Vision, Paris, France. We identified 29 distinct variants, of which 27 were truncating. All were located in the 3′ half of the RPGR(ORF15) transcript. Twenty of them were novel. Fifteen subjects were affected by CD, the remaining had CRD. When analyzing the longitudinal data, a progressive decline in visual acuity (VA) was noted, with more than 60% of the patients reaching VA ≥ 1 LogMar in the best eye after the fifth decade of life. To our knowledge, this is the largest described study of a cohort of CD/CRD patients affected by RPGR(ORF15) variants. Longitudinal data showed a rapidly progressive disease, possibly locating an optimal window of intervention for future therapies in younger ages.
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spelling pubmed-92668152022-07-09 Retrospective Natural History Study of RPGR-Related Cone- and Cone-Rod Dystrophies While Expanding the Mutation Spectrum of the Disease Nassisi, Marco De Bartolo, Giuseppe Mohand-Said, Saddek Condroyer, Christel Antonio, Aline Lancelot, Marie-Elise Bujakowska, Kinga Smirnov, Vasily Pugliese, Thomas Neidhardt, John Sahel, José-Alain Zeitz, Christina Audo, Isabelle Int J Mol Sci Article Variants in the X-linked retinitis pigmentosa GTPase regulator gene (RPGR) and, specifically, in its retinal opening reading frame-15 isoform (RPGR(ORF15)) may cause rod-cone (RCD), cone, and cone-rod dystrophies (CDs and CRDs). While RPGR-related RCDs have been frequently evaluated, the characteristics and progression of RPGR-related CD/CRDs are largely unknown. Therefore, the goal of our work was to perform genotype–phenotype correlations specifically in RPGR(ORF15)-related CD/CRDs. This retrospective longitudinal study included 34 index patients and two affected relatives with a molecular diagnosis of RPGR-related CD/CRDs. Patients were recruited at the “Quinze-Vingts” Hospital, Paris, France and screened for mutations in RPGR(ORF15) at the Institut de la Vision, Paris, France. We identified 29 distinct variants, of which 27 were truncating. All were located in the 3′ half of the RPGR(ORF15) transcript. Twenty of them were novel. Fifteen subjects were affected by CD, the remaining had CRD. When analyzing the longitudinal data, a progressive decline in visual acuity (VA) was noted, with more than 60% of the patients reaching VA ≥ 1 LogMar in the best eye after the fifth decade of life. To our knowledge, this is the largest described study of a cohort of CD/CRD patients affected by RPGR(ORF15) variants. Longitudinal data showed a rapidly progressive disease, possibly locating an optimal window of intervention for future therapies in younger ages. MDPI 2022-06-28 /pmc/articles/PMC9266815/ /pubmed/35806195 http://dx.doi.org/10.3390/ijms23137189 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nassisi, Marco
De Bartolo, Giuseppe
Mohand-Said, Saddek
Condroyer, Christel
Antonio, Aline
Lancelot, Marie-Elise
Bujakowska, Kinga
Smirnov, Vasily
Pugliese, Thomas
Neidhardt, John
Sahel, José-Alain
Zeitz, Christina
Audo, Isabelle
Retrospective Natural History Study of RPGR-Related Cone- and Cone-Rod Dystrophies While Expanding the Mutation Spectrum of the Disease
title Retrospective Natural History Study of RPGR-Related Cone- and Cone-Rod Dystrophies While Expanding the Mutation Spectrum of the Disease
title_full Retrospective Natural History Study of RPGR-Related Cone- and Cone-Rod Dystrophies While Expanding the Mutation Spectrum of the Disease
title_fullStr Retrospective Natural History Study of RPGR-Related Cone- and Cone-Rod Dystrophies While Expanding the Mutation Spectrum of the Disease
title_full_unstemmed Retrospective Natural History Study of RPGR-Related Cone- and Cone-Rod Dystrophies While Expanding the Mutation Spectrum of the Disease
title_short Retrospective Natural History Study of RPGR-Related Cone- and Cone-Rod Dystrophies While Expanding the Mutation Spectrum of the Disease
title_sort retrospective natural history study of rpgr-related cone- and cone-rod dystrophies while expanding the mutation spectrum of the disease
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9266815/
https://www.ncbi.nlm.nih.gov/pubmed/35806195
http://dx.doi.org/10.3390/ijms23137189
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