Evidence map›Paper›PMID 35098484›Full record

SynthesisAdvances in therapy2022

Epidemiology of Mutations in the 65-kDa Retinal Pigment Epithelium (RPE65) Gene-Mediated Inherited Retinal Dystrophies: A Systematic Literature Review.

Juliana M F Sallum, Vinay Preet Kaur, Javed Shaikh, Judit Banhazi, Claudio Spera, Celia Aouadj, Daniel Viriato, M Dominik Fischer

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in Advances in therapy, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
3.5field-weighted citation impact, top 6% 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

35 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Restoring Sight: The Journey of AIPL1 from Discovery to Therapy.International journal of molecular sciences · 2025
    Review
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Long-term experience with gene augmentation therapy in patients with inherited retinal disease associated with biallelic mutations inMedizinische Genetik : Mitteilungsblatt des Berufsverbandes Medizinische Genetik e.V · 2025
    Article
  18. Review
  19. Review
  20. Genetics and phenotypes ofMolecular vision · 2025
    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

8 authors at 5 institutions in 6 countries.

Juliana M F SallumDepartment of Ophthalmology, Universidade Federal de São Paulo, São Paulo, Brazil.
Vinay Preet KaurNovartis Healthcare Pvt. Ltd, Hyderabad, India.
Javed ShaikhNovartis Healthcare Pvt. Ltd, Hyderabad, India.
Judit BanhaziNovartis Pharma AG, 4056, Basel, Switzerland. judit.banhazi@novartis.com.
Claudio SperaNovartis Pharma AG, 4056, Basel, Switzerland.
Celia AouadjNovartis Pharma K. K, Tokyo, Japan.
Daniel ViriatoNovartis Pharma AG, 4056, Basel, Switzerland.
M Dominik FischerCentre for Ophthalmology, University Eye Hospital, University Hospital Tübingen, Tübingen, Germany.
Novartis (Switzerland) · CHNovartis (India) · INNovartis (Japan) · JPSTZ eyetrial · DEUniversidade Federal de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionInherited retinal dystrophies (IRDs) represent a genetically diverse group of progressive, visually debilitating diseases. Adult and paediatric patients with vision loss due to IRD caused by biallelic mutations in the 65-kDa retinal pigment epithelium (RPE65) gene are often clinically diagnosed as retinitis pigmentosa (RP), and Leber congenital amaurosis (LCA). This study aimed to understand the epidemiological landscape of RPE65 gene-mediated IRD through a systematic review of the literature, as the current evidence base for its epidemiology is very limited.

methodsMedline, Embase, and other databases were searched for articles on the epidemiology of RPE65 gene-mediated IRDs from inception until June 2021. Studies were included if they were original research articles reporting the epidemiology of RP and LCA and/or proportion of RPE65 gene mutations in these clinically diagnosed or molecularly confirmed IRDs patients.

resultsA total of 100 studies with relevant data were included in this systematic review. The range for prevalence of LCA and RP in the literature was 1.20-2.37 and 11.09-26.43 per 100,000, respectively. The proportion of RPE65 mutations in clinically diagnosed patients with LCA was found to be between ~ 2-16% within the US and major European countries (France, Germany, Italy, Spain, and the UK). This range was also comparable to our findings in the Asian region for RPE65-LCA (1.26-16.67%). Similarly, for these European countries, RPE65-RP was estimated between 0.23 and 1.94%, and RPE65-IRD range was 1.2-14%. Further, in the Americas region, mutations in RPE65 were reported to cause 1-3% of RP and 0.8-3.7% of IRD cases. Lastly, the RPE65-IRD range was 4.81-8% in the Middle East region.

conclusionsThere are significant variations in reporting of RPE65 proportions within countries as well as regions. Generating robust epidemiological evidence on RPE65 gene-mediated IRDs would be fundamental to support rare disease awareness, timely therapeutic intervention, and public health decision-making.

Indexed as

cis-trans-IsomerasesLeber Congenital AmaurosisRetinal DystrophiesAdultChildHumansMutationRetinal Pigment EpitheliumRetinoid Isomerohydrolasecis-trans-IsomerasesRetinoid IsomerohydrolaseEpidemiologyInherited retinal dystrophies (IRD)Leber congenital amaurosis (LCA)PrevalenceRetinitis pigmentosa (RP)RPE65 geneSystematic review

Identifiers

PMID35098484
PMCPMC8918161
OpenAlexW4210429911

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.