Evidence map›Paper›PMID 19503743›Full record

ArticleMolecular vision2009

Association of LOXL1 polymorphisms with pseudoexfoliation in the Chinese.

Kelvin Y C Lee, Su Ling Ho, Anbupalam Thalamuthu, Anandalakshmi Venkatraman, Divya Venkataraman, Don C K Pek, Tin Aung, Eranga N Vithana

Open access · greenAbstract read
In one paragraph

Article in Molecular vision, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 3 pooled it
5.4field-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

36 citing papers in PubMed, 3 syntheses or guidelines pooled it, 53 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
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  6. Modeling complex age-related eye disease.Progress in retinal and eye research · 2024
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  9. Association ofIranian journal of public health · 2019
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  10. Three Single Nucleotide Polymorphisms ofTurkish journal of ophthalmology · 2018
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  11. Review
  12. Association ofInternational journal of ophthalmology · 2018
    Article
  13. Article
  14. Article
  15. Pseudoexfoliation syndrome at a Singapore eye clinic.Clinical ophthalmology (Auckland, N.Z.) · 2015
    Article
  16. Article
  17. Article
  18. Article
  19. Article
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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 1 institution in 1 country.

Kelvin Y C LeeSingapore National Eye Centre, Singapore.
Su Ling Ho
Anbupalam Thalamuthu
Anandalakshmi Venkatraman
Divya Venkataraman
Don C K Pek
Tin Aung
Eranga N Vithana
Singapore National Eye Center · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeSingle nucleotide polymorphisms (SNPs) within the lysyl oxidase like-1 gene (LOXL1; rs1048661 and rs3825942) were found to confer risk to pseudoexfoliation glaucoma (XFG) through the pseudoexfoliation syndrome (XFS) in Nordic, Caucasian, and two Asiatic populations (Indian and Japanese). The prevalence (0.2%-0.7%) of XFS in the Chinese is considerably lower compared to Nordic populations. The aim of this study was to determine the association of LOXL1 in Chinese subjects with XFS/XFG.

methodsChinese subjects with clinically diagnosed XFS/XFG and normal controls were recruited. Genomic DNA was extracted, and the two LOXL1 SNPs (rs1048661 and rs3825942) were genotyped by bidirectional sequencing. Allele and genotype frequencies were compared between cases and unrelated controls using PLINK. Linkage disequilibrium (LD) calculations and haplotype association analysis were done using the Haploview package and WHAP package, respectively.

resultsSixty-two Chinese patients (17 XFG and 45 XFS) and 171 Chinese controls were studied. The G allele of LOXL1 SNP rs3825942 was moderately associated (OR=10.97, p=0.0018) with pseudoxfoliation in the Chinese. The frequency of the G allele of rs1048661 was not significantly different in cases compared to controls (p=0.142) in the allelic association test. However, the genotype test showed marginal association for rs1048661 (p=0.030). Only three haplotypes were observed (T-G, G-G, and G-A) with G-G as a risk haplotype (p=0.0034) and G-A as a protective haplotype (p=0.00039). T-G, which was a risk haplotype in the Japanese, was not associated with XFG in the Chinese (p=0.124).

conclusionsPolymorphisms in LOXL1 confer risk to XFS/XFG in the Chinese. The lower incidence of XFS compared to other populations suggests additional genetic or environmental factors to have a major influence on the phenotypic expression of XFS in the Chinese. The G allele of rs3825942 has been shown to be associated with XFS/XFG in all populations studied to date.

Indexed as

AgedAged, 80 and overAmino Acid OxidoreductasesChinaExfoliation SyndromeFemaleGene FrequencyGlaucoma, Open-AngleHaplotypesHumansLinkage DisequilibriumLogistic ModelsMaleMiddle AgedPolymerase Chain ReactionAmino Acid OxidoreductasesLOXL1 protein, human

Identifiers

PMID19503743
PMCPMC2690963
OpenAlexW1611315021

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LicenceCC BY
Read underepoch 390

Registered trials

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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.