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Region Hovedstaden - en del af Københavns Universitetshospital
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The Natural History of Inherited Retinal Dystrophy due to Biallelic Mutations in the RPE65 Gene

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

DOI

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  • Daniel C Chung
  • Mette Bertelsen
  • Birgit Lorenz
  • Mark E Pennesi
  • Bart P Leroy
  • Christian P Hamel
  • Eric Pierce
  • Juliana Sallum
  • Michael Larsen
  • Knut Stieger
  • Markus Preising
  • Richard Weleber
  • Paul Yang
  • Emily Place
  • Emily Liu
  • Grace Schaefer
  • Julie DiStefano-Pappas
  • Okan U Elci
  • Sarah McCague
  • Jennifer A Wellman
  • Katherine A High
  • Kathleen Z Reape
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PURPOSE: To delineate the natural history of visual parameters over time in individuals with biallelic RPE65 mutation-associated inherited retinal dystrophy (IRD); describe the range of causative mutations; determine potential genotype/phenotype relationships; and describe the variety of clinical diagnoses.

DESIGN: Multicenter, retrospective, cross-sectional study.

METHODS: STUDY POPULATION: : Seventy (70) individuals with biallelic RPE65 mutation-associated IRD.

PROCEDURES: Data were extracted from patient charts MEASUREMENTS: Visual acuity (VA), Goldmann visual field (GVF), optical coherence tomography, color vision testing, light sensitivity testing, and electroretinograms (retinal imaging and fundus photography were collected and analyzed when available).   RESULTS: VA decreased with age in a nonlinear, positive-acceleration relationship (P < .001). GVF decreased with age (P < .0001 for both V4e and III4e), with faster GVF decrease for III4e stimulus versus V4e (P = .0114, left eye; P = .0076, right eye). On average, a 1-year increase in age decreased III4e GVF by ∼25 sum total degrees in each eye while V4e GVF decreased by ∼37 sum total degrees in each eye, although individual variability was observed. A total of 78 clinical diagnoses and 56 unique RPE65 mutations were recorded, without discernible RPE65 mutation genotype/phenotype relationships.

CONCLUSIONS: The number of clinical diagnoses and lack of a consistent RPE65 mutation to phenotype correlation underscore the need for genetic testing. Significant relationships between age and worsening VA and GVF highlight the progressive loss of functional retina over time. These data may have implications for optimal timing of treatment for IRD due to biallelic RPE65 mutations.

OriginalsprogEngelsk
TidsskriftAmerican Journal of Ophthalmology
Vol/bind199
Sider (fra-til)58-70
ISSN0002-9394
DOI
StatusUdgivet - 2019

ID: 56086576