Evidence map›Paper›PMID 28648143›Full record

ArticleJournal of negative results in biomedicine2017

Polymorphism rs547984 on human chromosome 1q43 is not associated with primary open angle glaucoma in a Saudi cohort.

Taif A Azad, Nikhil B Edward, Altaf A Kondkar, Hatem Kalantan, Saleh Altuwaijri, Tahira Sultan, Faisal A Al-Mobarak, Saleh A Al-Obeidan, Khaled K Abu-Amero

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Article in Journal of negative results in biomedicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Review
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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

9 authors at 4 institutions in 2 countries.

Taif A AzadGlaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, 11411, Saudi Arabia.
Nikhil B EdwardCase Western Reserve University, Ohio, USA.
Altaf A KondkarGlaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, 11411, Saudi Arabia.
Hatem KalantanGlaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, 11411, Saudi Arabia.
Saleh AltuwaijriSAAD Research & Development Center, Clinical Research Lab., SAAD Specialist Hospital, P.O. Box 30353, Al Khobar, 31952, Saudi Arabia.
Tahira SultanGlaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, 11411, Saudi Arabia.
Faisal A Al-MobarakGlaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, 11411, Saudi Arabia.
Saleh A Al-ObeidanGlaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, 11411, Saudi Arabia.
Khaled K Abu-AmeroGlaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, 11411, Saudi Arabia. abuamero@gmail.com.
King Saud University · SACase Western Reserve University · USQassim University · SAUniversity of Illinois Chicago · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo investigate the association between polymorphism rs547984, located in close proximity to the Zona Pellucida Glycoprotein 4 (ZP4) gene on human chromosome 1q43 and primary open angle glaucoma (POAG).

methodPolymorphism rs547984 was genotyped using Taq-Man® assay in 185 subjects comprising of 90 unrelated POAG cases and 95 controls of Saudi origin.

resultsAssociation analysis between cases and controls revealed no significant genotype distribution under additive (p = 0.356), dominant (p = 0.517) and recessive (p = 0.309) models. Besides, the allele frequency distribution was also found to be non-significant (p = 0.70). The minor "A" allele frequency was found to be 0.49 and 0.50 among POAG cases and controls, respectively. In addition, specific clinical indices used to assess severity of glaucoma such as intraocular pressure (IOP), cup/disc ratio and number of anti-glaucoma medication also did not show any significant genotype distribution in POAG cases.

conclusionPolymorphism rs547984 is neither associated with any clinical indices important for POAG such as IOP and cup/disc ratio nor is a risk factor for POAG in the Saudi cohort.

Indexed as

AdultAgedChromosomes, Human, Pair 1Cohort StudiesFemaleGenetic VariationGlaucoma, Open-AngleHumansIntraocular PressureMaleMiddle AgedPolymorphism, Single NucleotideSaudi ArabiaPoagrs547984SaudiZP4

Identifiers

PMID28648143
PMCPMC5483842
OpenAlexW2671308474

What OpenQuestion holds

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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.