Evidence map›Paper›PMID 32059734›Full record

SynthesisOrphanet journal of rare diseases2020

The effect of human gene therapy for RPE65-associated Leber's congenital amaurosis on visual function: a systematic review and meta-analysis.

Xue Wang, Chaofeng Yu, Radouil T Tzekov, Yihua Zhu, Wensheng Li

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Orphanet journal of rare diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 2 pooled it
3.9field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

46 citing papers in PubMed, 2 syntheses or guidelines pooled it, 71 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Immune function in X-linked retinoschisis subjects in an AAV8-RS1 phase I/IIa gene therapy trial.Molecular therapy : the journal of the American Society of Gene Therapy · 2021
    Trial
  4. Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Recombinant adeno-associated virus as a delivery platform for ocular gene therapy: A comprehensive review.Molecular therapy : the journal of the American Society of Gene Therapy · 2024
    Review
  11. Review
  12. Article
  13. Functional Vision in Patients With Biallelic USH2A Variants.American journal of ophthalmology · 2024
    Article
  14. Article
  15. Genetic Landscape ofFrontiers in genetics · 2024
    Article
  16. Cell-cell interaction in the pathogenesis of inherited retinal diseases.Frontiers in cell and developmental biology · 2024
    Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 4 institutions in 2 countries.

Xue WangAier School of Ophthalmology, Central South University, Changsha, China.
Chaofeng YuShanghai Aier Eye Hospital, 1286 Hongqiao Road, Shanghai, China.
Radouil T TzekovDepartment of Ophthalmology, University of South Florida, Tampa, Florida, USA.
Yihua ZhuFirst Affiliated Hospital of Fujian Medical University, Fuzhou, China. zhuyihua889@163.com.
Wensheng LiAier School of Ophthalmology, Central South University, Changsha, China. drlws@qq.com.ORCID 0000-0002-1172-3349
Central South University · CNEye & ENT Hospital of Fudan University · CNFujian Medical University · CNUniversity of South Florida · US

Funding

National Natural Science Foundation of China 81570875
6 · The paper itself

Abstract

backgroundRPE65-associated LCA (RPE65-LCA) is an inherited retinal degeneration caused by the mutations of RPE65 gene and gene therapy has been developed to be a promising treatment. This study aims to evaluate the association between changes in visual function and application of gene therapy in patients with RPE65-LCA.

methodsSeveral databases (PubMed, Cochrane Library, and Web of Science) were searched for results of studies describing efficacy of gene therapy in patients with RPE65-LCA. Six studies, which included one randomized and five prospective non-randomized clinical trials, 164 eyes met our search criteria and were assessed.

resultsThe BCVA significantly improved in treated eyes at 1 yr post treatment by - 0.10 logMAR (95% CI, - 0.17 - -0.04; p = 0·002), while there was no significant difference at 2-3 years post treatment (WMD: 0.01; 95% CI, - 0.00 - 0.02; p = 0·15). FST sensitivity to blue flashes also improved by 1.60 log (95% CI, 0.66-2.55; p = 0.0009), but no significant difference to red flashes (WMD: 0.86; 95% CI, - 0·29-2.01; p = 0.14) at 1 yr. There was no significant difference in central retinal thickness at 1 yr, but central retina in treated eyes appeared thinner at 2-3 years post treatment by 19.21 μm (95% CI, - 34.22 - -4.20; p = 0.01).

conclusionsHuman gene therapy is a pioneering treatment option for RPE65-LCA. Although its efficacy appears to be limited to less than 2 yrs after treatment, it carries the potential for further improvement and prolongation of efficacy.

Indexed as

cis-trans-IsomerasesLeber Congenital AmaurosisBlindnessEye ProteinsGenetic TherapyHumansMutationProspective Studiescis-trans-IsomerasesEye ProteinsGene therapyLeber’s congenital AmaurosisMeta-analysisVisual function

Identifiers

PMID32059734
PMCPMC7023818
OpenAlexW3009940848

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.