Evidence map›Paper›PMID 26237198›Full record

ArticleInvestigative ophthalmology & visual science2015

Accurate Imputation-Based Screening of Gln368Ter Myocilin Variant in Primary Open-Angle Glaucoma.

Puya Gharahkhani, Kathryn P Burdon, Alex W Hewitt, Matthew H Law, Emmanuelle Souzeau, Grant W Montgomery, Graham Radford-Smith, David A Mackey, Jamie E Craig, Stuart MacGregor

Open access · greenAbstract readMulticenter Study
In one paragraph

Article in Investigative ophthalmology & visual science, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 15% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. 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

10 authors at 5 institutions in 1 country.

Puya GharahkhaniQueensland Institute of Medical Research Berghofer Medical Research Institute Brisbane, Queensland, Australia.
Kathryn P BurdonDepartment of Ophthalmology, Flinders University, Adelaide, South Australia, Australia 3Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.
Alex W HewittMenzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia 4Centre for Eye Research Australia, University of Melbourne, Royal Victorian Eye and Ear Hospital, Melbourne, Victoria, Australia.
Matthew H LawQueensland Institute of Medical Research Berghofer Medical Research Institute Brisbane, Queensland, Australia.
Emmanuelle SouzeauDepartment of Ophthalmology, Flinders University, Adelaide, South Australia, Australia.
Grant W MontgomeryQueensland Institute of Medical Research Berghofer Medical Research Institute Brisbane, Queensland, Australia.
Graham Radford-SmithQueensland Institute of Medical Research Berghofer Medical Research Institute Brisbane, Queensland, Australia 5School of Medicine, University of Queensland, Herston Campus, Brisbane, Queensland, Australia.
David A MackeyMenzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia 6Centre for Ophthalmology and Visual Science, Lions Eye Institute, University of Western Australia, Perth, Western Australia, Australia.
Jamie E CraigDepartment of Ophthalmology, Flinders University, Adelaide, South Australia, Australia 7South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia.
Stuart MacGregorQueensland Institute of Medical Research Berghofer Medical Research Institute Brisbane, Queensland, Australia.
QIMR Berghofer Medical Research Institute · AUFlinders University · AUCentre for Eye Research Australia · AULions Eye Institute · AUUniversity of Queensland · AU

Funding

Barrett's and Esophageal Adenocarcinoma Genetic Susceptibility Study (BEAGESS)R01CA136725 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI VAUGHAN, THOMAS L, WHITEMAN, DAVID C · 2009 to 2011
$7.8M
International Collaborative Twin Study of Refractive and Glaucoma EndophenotypesR01EY018246 · NEI · DUKE UNIVERSITY · PI YOUNG, TERRI LOIS · 2007 to 2009
$1.8M
Molecular epidemiology of Barretts esophagus and cancerR01CA001833 · NCI · QUEENSLAND INSTITUTE OF MEDICAL RESEARCH · PI WHITEMAN, DAVID C · 2002 to 2006
$1.3M
NCI NIH HHS R01 CA001833NCI NIH HHS R01 CA136725NEI NIH HHS R01 EY018246
6 · The paper itself

Abstract

purposeMyocilin (MYOC) is a well-established primary open-angle glaucoma (POAG) risk gene, with rare variants known to have high penetrance. The most common clinically relevant risk variant, Gln368Ter, has an allele frequency of 0.1% to 0.3% in populations of European ancestry. Detection of rare MYOC variants has traditionally been conducted using Sanger sequencing. Here we report the use of genotyping arrays and imputation to assess whether rare variants including Gln368Ter can be reliably detected.

methodsA total of 1155 cases with advanced POAG and 1992 unscreened controls genotyped on common variant arrays participated in this study. Accuracy of imputation of Gln368Ter variants was compared with direct sequencing. A genome-wide association study was performed using additive model adjusted for sex and the first six principal components.

resultsWe found that although the arrays we used were designed to tag common variants, we could reliably impute the Gln368Ter variant (rs74315329). When tested in 1155 POAG cases and 1992 controls, rs74315329 was strongly associated with risk (odds ratio = 15.53, P = 1.07 × 10-9). All POAG samples underwent full sequencing of the MYOC gene, and we found a sensitivity of 100%, specificity of 99.91%, positive predictive value of 95.65%, and negative predictive value of 100% between imputation and sequencing. Gln368Ter was also accurately imputed in a further set of 1801 individuals without POAG. Among the total set of 3793 (1992 + 1801) individuals without POAG, six were predicted (probability > 95%) to carry the risk variant.

conclusionsWe demonstrate that some clinically important rare variants can be reliably detected using arrays and imputation. These results have important implications for the detection of clinically relevant incidental findings in ongoing and future studies using arrays.

Indexed as

Intraocular PressureMutationCytoskeletal ProteinsDNA Mutational AnalysisEye ProteinsGene FrequencyGenetic TestingGenome-Wide Association StudyGenotypeGlaucoma, Open-AngleGlycoproteinsHumansMyocilinReproducibility of ResultsCytoskeletal ProteinsEye ProteinsGlycoproteinsMyocilin

Identifiers

PMID26237198
PMCPMC4525674
OpenAlexW1594838450

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.