Evidence map›Paper›PMID 28327576›Full record

ArticleEuropean journal of human genetics : EJHG2017

Genotypic spectrum and phenotype correlations of ABCA4-associated disease in patients of south Asian descent.

Winston Lee, Kaspar Schuerch, Jana Zernant, Frederick T Collison, Srilaxmi Bearelly, Gerald A Fishman, Stephen H Tsang, Janet R Sparrow, Rando Allikmets

Open access · bronzeAbstract read
In one paragraph

Article in European journal of human genetics : EJHG, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

23 citing papers in PubMed, 40 citations in OpenAlex.

  1. Dysregulated DNA Methylation inInternational journal of molecular sciences · 2025
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  8. Stargardt disease: Multimodal imaging: A review.Clinical & experimental ophthalmology · 2021
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Lessons learned from quantitative fundus autofluorescence.Progress in retinal and eye research · 2020
    Review
  15. Article
  16. Article
  17. Penetrance of the ABCA4 p.Asn1868Ile Allele in Stargardt Disease.Investigative ophthalmology & visual science · 2018
    Article
  18. Article
  19. Article
  20. Variants in theMolecular vision · 2018
    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

9 authors at 1 institution in 1 country.

Winston LeeDepartment of Ophthalmology, Columbia University, New York, NY, USA.
Kaspar SchuerchDepartment of Ophthalmology, Columbia University, New York, NY, USA.
Jana ZernantDepartment of Ophthalmology, Columbia University, New York, NY, USA.
Frederick T CollisonThe Pangere Center for Inherited Retinal Diseases, The Chicago Lighthouse, Chicago, IL, USA.
Srilaxmi BearellyDepartment of Ophthalmology, Columbia University, New York, NY, USA.
Gerald A FishmanThe Pangere Center for Inherited Retinal Diseases, The Chicago Lighthouse, Chicago, IL, USA.
Stephen H TsangDepartment of Ophthalmology, Columbia University, New York, NY, USA.
Janet R SparrowDepartment of Ophthalmology, Columbia University, New York, NY, USA.
Rando AllikmetsDepartment of Ophthalmology, Columbia University, New York, NY, USA.
Columbia University · US

Funding

Instrumentation, Fabrication, and Design CoreP30EY019007 · NEI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI Xin Zhang · 2010 to 2026
$12.9M
Therapeutic approaches for ABCA4-associated disordersR24EY019861 · NEI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI ALLIKMETS, RANDO L · 2011 to 2015
$7.2M
Quantitative Fundus Autofluorescence in Retinal DisordersR01EY024091 · NEI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI SPARROW, JANET RUTHE · 2014 to 2022
$3.4M
Completing genetic analysis of the ABCA4 locusR01EY021163 · NEI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI ALLIKMETS, RANDO L · 2011 to 2014
$2.4M
NEI NIH HHS P30 EY019007NEI NIH HHS R01 EY021163NEI NIH HHS R01 EY024091NEI NIH HHS R24 EY019861
6 · The paper itself

Abstract

Variants in the ABCA4 gene are the most common cause of juvenile-onset blindness affecting close to 1 in 10 000 people worldwide. Disease severity varies largely according to genotype, which can be specific to ethnic and racial groups. Here we investigate the spectrum of ABCA4 variation and its phenotypic expression in 38 patients of South Asian descent, notably from India, Pakistan, Bangladesh and Sri Lanka. Sequencing of all exons and flanking intronic sequences of ABCA4 revealed disease-causing variants in all patients: 3 in 2.6%, 2 in 81.6% and 1 in 15.8%. Altogether, 36 distinct variants were identified, including 9 previously not described. The most frequent variant c.5882G>A, p.(G1961E) was found in half the patients, the highest ever reported in a single study cohort. The South Asian founder variant c.859-9T>C was identified along with other founder variants ascribed to Danish, Chinese, Mexican and African patients. Patients carrying c.5882G>A, p.(G1961E) exhibited a consistently confined disease phenotype, normal quantitative autofluorescence (qAF) levels and preserved full-field ERG (ffERG) while c.859-9T>C resulted in widespread disease, significantly elevated qAF and reduced to non-detectable ffERG. South Asian patients present with a relatively unique ABCA4 profile comprised of various ethnic founder variants resulting in two or three major retinal phenotypes.

Indexed as

GenotypePolymorphism, Single NucleotideAdolescentAdultATP-Binding Cassette TransportersBangladeshExonsEye Diseases, HereditaryFemaleFounder EffectHumansIndiaMacular DegenerationMaleMiddle AgedPakistanABCA4 protein, humanATP-Binding Cassette Transporters

Identifiers

PMID28327576
PMCPMC5477356
OpenAlexW2600081787

What OpenQuestion holds

Textmetadata
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.