Evidence map›Paper›PMID 29391521›Full record

ArticleEuropean journal of human genetics : EJHG2018

A clinical and molecular characterisation of CRB1-associated maculopathy.

Kamron N Khan, Anthony Robson, Omar A R Mahroo, Gavin Arno, Chris F Inglehearn, Monica Armengol, Naushin Waseem, Graham E Holder, Keren J Carss, Lucy F Raymond and 7 more

Open access · hybridAbstract read
In one paragraph

Article in European journal of human genetics : EJHG, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
3.2field-weighted citation impact, top 7% 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

42 citing papers in PubMed, 70 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Novel Genotype-Phenotype Correlations inOphthalmology science · 2026
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  6. The Specific Pathogenicity Pattern of the DifferentInternational journal of molecular sciences · 2025
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  8. Understanding the phenotype of genetically associated electronegative ERG retinopathies: comparing the full-field ERG b:a ratio.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  9. Article
  10. Article
  11. Expanding the Clinical Spectrum ofInternational journal of molecular sciences · 2025
    Article
  12. Assessment ofBiomedicines · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Foveal Hypoplasia inInternational journal of molecular sciences · 2023
    Article
  18. Macular dystrophies associated with Stargardt-like phenotypes.Arquivos brasileiros de oftalmologia · 2023
    Article
  19. Article
  20. Optical Coherence Tomography Angiography inJournal of clinical medicine · 2023
    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

17 authors at 6 institutions in 3 countries.

Kamron N KhanUniversity College London Institute of Ophthalmology, University College London, London, UK. medknk@leeds.ac.uk.
Anthony RobsonDepartment of Electrophysiology, Moorfields Eye Hospital, London, UK.
Omar A R MahrooUniversity College London Institute of Ophthalmology, University College London, London, UK.
Gavin ArnoUniversity College London Institute of Ophthalmology, University College London, London, UK.
Chris F InglehearnSection of Ophthalmology and Neuroscience, Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK.
Monica ArmengolInherited Eye Disease Service, Moorfields Eye Hospital, London, UK.
Naushin WaseemSection of Ophthalmology and Neuroscience, Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK.
Graham E HolderDepartment of Electrophysiology, Moorfields Eye Hospital, London, UK.
Keren J CarssNIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust, Cambridge Biomedical Campus, Cambridge, UK.
Lucy F RaymondNIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust, Cambridge Biomedical Campus, Cambridge, UK.
Andrew R WebsterUniversity College London Institute of Ophthalmology, University College London, London, UK.
Anthony T MooreUniversity College London Institute of Ophthalmology, University College London, London, UK.
Martin McKibbinSection of Ophthalmology and Neuroscience, Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK.
Maria M van GenderenBartiméus Diagnostic Centre for Complex Visual Disorders, Zeist, The Netherlands.
James A PoulterSection of Ophthalmology and Neuroscience, Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK.ORCID http://orcid.org/0000-0003-2048-5693
Michel MichaelidesUniversity College London Institute of Ophthalmology, University College London, London, UK.
UK Inherited Retinal Disease Consortium
Moorfields Eye Hospital · GBUniversity of Leeds · GBNHS Blood and Transplant · GBUniversity College London · GBUniversity Medical Center Utrecht · NLUniversity of California San Francisco Medical Center · US

Funding

Wellcome Trust 099173/Z/12/ZWellcome Trust 206619Wellcome Trust 206619/Z/17/Z
6 · The paper itself

Abstract

To date, over 150 disease-associated variants in CRB1 have been described, resulting in a range of retinal disease phenotypes including Leber congenital amaurosis and retinitis pigmentosa. Despite this, no genotype-phenotype correlations are currently recognised. We performed a retrospective review of electronic patient records to identify patients with macular dystrophy due to bi-allelic variants in CRB1. In total, seven unrelated individuals were identified. The median age at presentation was 21 years, with a median acuity of 0.55 decimalised Snellen units (IQR = 0.43). The follow-up period ranged from 0 to 19 years (median = 2.0 years), with a median final decimalised Snellen acuity of 0.65 (IQR = 0.70). Fundoscopy revealed only a subtly altered foveal reflex, which evolved into a bull's-eye pattern of outer retinal atrophy. Optical coherence tomography identified structural changes-intraretinal cysts in the early stages of disease, and later outer retinal atrophy. Genetic testing revealed that one rare allele (c.498_506del, p.(Ile167_Gly169del)) was present in all patients, with one patient being homozygous for the variant and six being heterozygous. In trans with this, one variant recurred twice (p.(Cys896Ter)), while the four remaining alleles were each observed once (p.(Pro1381Thr), p.(Ser478ProfsTer24), p.(Cys195Phe) and p.(Arg764Cys)). These findings show that the rare CRB1 variant, c.498_506del, is strongly associated with localised retinal dysfunction. The clinical findings are much milder than those observed with bi-allelic, loss-of-function variants in CRB1, suggesting this in-frame deletion acts as a hypomorphic allele. This is the most prevalent disease-causing CRB1 variant identified in the non-Asian population to date.

Indexed as

Genetic Association StudiesGenetic Predisposition to DiseaseAdolescentAdultAllelesChildChild, PreschoolElectronic Health RecordsEye ProteinsFemaleGenetic TestingHumansInfantInfant, NewbornMacular DegenerationMaleCRB1 protein, humanEye ProteinsMembrane ProteinsNerve Tissue Proteins

Identifiers

PMID29391521
PMCPMC5945653
OpenAlexW2787726328

What OpenQuestion holds

Textmetadata
LicenceTDM
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.