<i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New Mutation
Over 175 pathogenic mutations in the Peripherin-2 (<i>PRPH2)</i> gene are linked to various retinal diseases. We report the phenotype and genotype of eight families (24 patients) with retinal diseases associated with seven distinct <i>PRPH2</i> gene mutations. We identified a...
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MDPI AG
2020-07-01
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| Series: | Genes |
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| Online Access: | https://www.mdpi.com/2073-4425/11/7/773 |
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| author | Rosa M. Coco-Martin Hortensia T. Sanchez-Tocino Carmen Desco Ricardo Usategui-Martín Juan J. Tellería |
| author_facet | Rosa M. Coco-Martin Hortensia T. Sanchez-Tocino Carmen Desco Ricardo Usategui-Martín Juan J. Tellería |
| author_sort | Rosa M. Coco-Martin |
| collection | DOAJ |
| description | Over 175 pathogenic mutations in the Peripherin-2 (<i>PRPH2)</i> gene are linked to various retinal diseases. We report the phenotype and genotype of eight families (24 patients) with retinal diseases associated with seven distinct <i>PRPH2</i> gene mutations. We identified a new mutation, c.824_828+3delinsCATTTGGGCTCCTCATTTGG, in a patient with adult-onset vitelliform macular dystrophy (AVMD). One family with the p.Arg46Ter mutation presented with the already described AVMD phenotype, but another family presented with the same mutation and two heterozygous pathogenic mutations (p.Leu2027Phe and p.Gly1977Ser) in the ATP Binding Cassette Subfamily A Member 4 (<i>ABCA4</i>) gene that cause extensive chorioretinal atrophy (ECA), which could be a blended phenotype. The p.Lys154del <i>PRPH2</i> gene mutation associated with the p.Arg2030Glu mutation in the <i>ABCA4</i> gene was found in a patient with multifocal pattern dystrophy simulating fundus flavimaculatus (PDsFF), for whom we considered <i>ABCA4</i> as a possible modifying gene. The mutation p.Gly167Ser was already known to cause pattern dystrophy, but we also found ECA, PDsFF, and autosomal-dominant retinitis pigmentosa (ADRP) as possible phenotypes. Finally, we identified the mutation p.Arg195Leu in a large family with common ancestry, which previously was described to cause central areolar choroidal dystrophy (CACD), but we also found ADRP and observed that it caused ECA more frequently than CACD in this family. |
| first_indexed | 2024-03-10T18:35:55Z |
| format | Article |
| id | doaj.art-c2d1d26739bf4eff80921c346df5dd40 |
| institution | Directory Open Access Journal |
| issn | 2073-4425 |
| language | English |
| last_indexed | 2024-03-10T18:35:55Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Genes |
| spelling | doaj.art-c2d1d26739bf4eff80921c346df5dd402023-11-20T06:18:22ZengMDPI AGGenes2073-44252020-07-0111777310.3390/genes11070773<i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New MutationRosa M. Coco-Martin0Hortensia T. Sanchez-Tocino1Carmen Desco2Ricardo Usategui-Martín3Juan J. Tellería4Instituto Universitario de Oftalmobiologia Aplicada, Universidad de Valladolid, 47011 Valladolid, SpainDepartment of Ophthalmology, Hospital Universitario Rio Hortega, 47012 Valladolid, SpainFisabio Oftalmologia Medica, 46035 Valencia, SpainInstituto Universitario de Oftalmobiologia Aplicada, Universidad de Valladolid, 47011 Valladolid, SpainInstituto Universitario de Oftalmobiologia Aplicada, Universidad de Valladolid, 47011 Valladolid, SpainOver 175 pathogenic mutations in the Peripherin-2 (<i>PRPH2)</i> gene are linked to various retinal diseases. We report the phenotype and genotype of eight families (24 patients) with retinal diseases associated with seven distinct <i>PRPH2</i> gene mutations. We identified a new mutation, c.824_828+3delinsCATTTGGGCTCCTCATTTGG, in a patient with adult-onset vitelliform macular dystrophy (AVMD). One family with the p.Arg46Ter mutation presented with the already described AVMD phenotype, but another family presented with the same mutation and two heterozygous pathogenic mutations (p.Leu2027Phe and p.Gly1977Ser) in the ATP Binding Cassette Subfamily A Member 4 (<i>ABCA4</i>) gene that cause extensive chorioretinal atrophy (ECA), which could be a blended phenotype. The p.Lys154del <i>PRPH2</i> gene mutation associated with the p.Arg2030Glu mutation in the <i>ABCA4</i> gene was found in a patient with multifocal pattern dystrophy simulating fundus flavimaculatus (PDsFF), for whom we considered <i>ABCA4</i> as a possible modifying gene. The mutation p.Gly167Ser was already known to cause pattern dystrophy, but we also found ECA, PDsFF, and autosomal-dominant retinitis pigmentosa (ADRP) as possible phenotypes. Finally, we identified the mutation p.Arg195Leu in a large family with common ancestry, which previously was described to cause central areolar choroidal dystrophy (CACD), but we also found ADRP and observed that it caused ECA more frequently than CACD in this family.https://www.mdpi.com/2073-4425/11/7/773<i>PRPH2</i><i>ABCA4</i>AVMDpattern dystrophy simulating FFextensive chorioretinal atrophyCACD |
| spellingShingle | Rosa M. Coco-Martin Hortensia T. Sanchez-Tocino Carmen Desco Ricardo Usategui-Martín Juan J. Tellería <i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New Mutation Genes <i>PRPH2</i> <i>ABCA4</i> AVMD pattern dystrophy simulating FF extensive chorioretinal atrophy CACD |
| title | <i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New Mutation |
| title_full | <i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New Mutation |
| title_fullStr | <i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New Mutation |
| title_full_unstemmed | <i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New Mutation |
| title_short | <i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New Mutation |
| title_sort | i prph2 i related retinal diseases broadening the clinical spectrum and describing a new mutation |
| topic | <i>PRPH2</i> <i>ABCA4</i> AVMD pattern dystrophy simulating FF extensive chorioretinal atrophy CACD |
| url | https://www.mdpi.com/2073-4425/11/7/773 |
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