Cited by 743Retinal Development and DisordersVirus-based gene therapy researchRetinal Diseases and Treatments

The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.

Long-Term Effect of Gene Therapy on Leber’s Congenital Amaurosis

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Abstract

BACKGROUND: Mutations in RPE65 cause Leber's congenital amaurosis, a progressive retinal degenerative disease that severely impairs sight in children. Gene therapy can result in modest improvements in night vision, but knowledge of its efficacy in humans is limited. METHODS: We performed a phase 1-2 open-label trial involving 12 participants to evaluate the safety and efficacy of gene therapy with a recombinant adeno-associated virus 2/2 (rAAV2/2) vector carrying the RPE65 complementary DNA, and measured visual function over the course of 3 years. Four participants were administered a lower dose of the vector, and 8 were administered a higher dose. In a parallel study in dogs, we investigated the relationship among vector dose, visual function, and electroretinography (ERG) findings. RESULTS: Improvements in retinal sensitivity were evident, to varying extents, in six participants for up to 3 years, peaking at 6 to 12 months after treatment and then declining. No associated improvement in retinal function was detected by means of ERG. Three participants had intraocular inflammation, and two had clinically significant deterioration of visual acuity. The reduction in central retinal thickness varied among participants. In dogs, RPE65 gene therapy with the same vector at lower doses improved vision-guided behavior, but only higher doses resulted in improvements in retinal function that were detectable with the use of ERG. CONCLUSIONS: Gene therapy with rAAV2/2 RPE65 vector improved retinal sensitivity, albeit modestly and temporarily. Comparison with the results obtained in the dog model indicates that there is a species difference in the amount of RPE65 required to drive the visual cycle and that the demand for RPE65 in affected persons was not met to the extent required for a durable, robust effect. (Funded by the National Institute for Health Research and others; ClinicalTrials.gov number, NCT00643747.).

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  1. Poehner WJ, 2000, Mol Vis, 6, 192
  2. Geller SF, 2001, Invest Ophthalmol Vis Sci, 42, 1363
  3. 10.1056/NEJMoa1412965 · DOI

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Metadata

Authors
Bainbridge, J. W. B., Mehat, M. S., Sundaram, V., Robbie, S. J., Barker, S. E., Ripamonti, C., Georgiadis, A., Mowat, F. M., Beattie, S. G., Gardner, P. J., Feathers, K. L., Luong, V. A., Yzer, S., Balaggan, K., Viswanathan, A., de Ravel, T. J. L., Casteels, I., Holder, G. E., Tyler, N., Fitzke, F. W., Weleber, R. G., Nardini, M., Moore, A. T., Thompson, D. A., Petersen-Jones, S. M., Michaelides, M., van den Born, L. I., Stockman, A., Smith, A. J., Rubin, G., & Ali, R. R.
Affiliations
  • Moorfields Eye Hospital (GB)
  • Michigan State University (US)
  • University of Michigan (US)
  • Rotterdam Eye Hospital (NL)
  • Universitair Ziekenhuis Leuven (BE)
  • Oregon Health & Science University (US)
Venue
New England Journal of Medicine
Published
2015-05-14
Volume
372
Issue
20
Pages
1887-1897
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W265142245
Cited by
743
References
29
Citations by year
2026: 36 · 2025: 36 · 2024: 46 · 2023: 44 · 2022: 63 · 2021: 92 · 2020: 81 · 2019: 68 · 2018: 79 · 2017: 97 · 2016: 72 · 2015: 27
FWCI
39.82
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Durham Research Online (Durham University) (acceptedVersion)
  • Durham Research Online (Durham University) (submittedVersion, cc-by)
  • Lirias (KU Leuven) (submittedVersion, other-oa)
  • UCL Discovery (University College London) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • Research Portal (King's College London) (submittedVersion, other-oa)
  • VUBIR (Vrije Universiteit Brussel) (submittedVersion)
Funders
  • Research to Prevent Blindness
  • Wellcome Trust
  • Massachusetts Medical Society
  • National Institute for Health and Care Research (NF-SI-0507-10204, NF-SI-0513-10074, NIHR-RP-011-003)
  • Sir Jules Thorn Charitable Trust
  • University College London
  • European Commission
  • Ulverscroft Foundation
  • Durham University
  • KU Leuven
  • Moorfields Eye Hospital NHS Foundation Trust
  • Directorate for Biological Sciences
  • Medical Research Council (MR/K024000/1, MR/M015815/1, MR/J005215/1)
  • Engineering and Physical Sciences Research Council (EP/J017698/1, EP/J005193/1)
  • Biotechnology and Biological Sciences Research Council (BB/M00211X/1)
Topics
  • Health Sciences › Medicine › Ophthalmology › Retinal Development and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
Keywords
Leber congenital amaurosis, RPE65, gene therapy, retinal degeneration, visual function, retinal sensitivity, electroretinogram, vector dose, intraocular inflammation, visual acuity, canine model, species differences, long-term efficacy and safety
MeSH terms
Retinoid Isomerohydrolase, Dependovirus, Adolescent, Animals, Child, Disease Models, Animal, Dogs, Genetic Vectors, Humans, Mutation, Retina, Vision, Ocular, Genetic Therapy, DNA, Complementary, Disease Progression, cis-trans-Isomerases, Photoreceptor Cells, Vertebrate, Young Adult, Leber Congenital Amaurosis

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