<i>PRPH2</i>-Related Retinal Diseases: Broadening the Clinical Spectrum and Describing a New Mutation
Over 175 pathogenic mutations in the Peripherin-2 (PRPH2)gene are linked to various retinal diseases. We report the phenotype and genotype of eight families (24 patients) with retinal diseases associated with seven distinctPRPH2gene mutations. We identified a new mutation, c.824_828+3delinsCATTTGGGC...
| Authors: | , , , , |
|---|---|
| Format: | article |
| Status: | Published version |
| Publication Date: | 2020 |
| Country: | España |
| Institution: | Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO) |
| Repository: | r-FISABIO. Repositorio Institucional de Producción Científica |
| OAI Identifier: | oai:fisabio.fundanetsuite.com:p7841 |
| Online Access: | https://fisabio.portalinvestigacion.com/publicaciones/7841 |
| Access Level: | Open access |
| Keyword: | PRPH2 ABCA4 AVMD pattern dystrophy simulating FF extensive chorioretinal atrophy CACD blended phenotypes inherited retinal diseases |
| Summary: | Over 175 pathogenic mutations in the Peripherin-2 (PRPH2)gene are linked to various retinal diseases. We report the phenotype and genotype of eight families (24 patients) with retinal diseases associated with seven distinctPRPH2gene 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 (ABCA4) gene that cause extensive chorioretinal atrophy (ECA), which could be a blended phenotype. The p.Lys154delPRPH2gene mutation associated with the p.Arg2030Glu mutation in theABCA4gene was found in a patient with multifocal pattern dystrophy simulating fundus flavimaculatus (PDsFF), for whom we consideredABCA4as 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. |
|---|