Evidence map›Paper›PMID 21392827›Full record

ArticleInternational journal of pediatric otorhinolaryngology2011

Absence of GJB2 gene mutations, the GJB6 deletion (GJB6-D13S1830) and four common mitochondrial mutations in nonsyndromic genetic hearing loss in a South African population.

Rosemary I Kabahuma, Xiaomei Ouyang, Li Lin Du, Denise Yan, Tim Hutchin, Michele Ramsay, Claire Penn, Xue-Zhong Liu

Open access · greenAbstract readComparative Study
In one paragraph

Article in International journal of pediatric otorhinolaryngology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 16% 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

27 citing papers in PubMed, 2 syntheses or guidelines pooled it, 48 citations in OpenAlex.

  1. Pooled it
  2. Increased risk of aminoglycoside-induced hearing loss in MDR-TB patients with HIV coinfection.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2018
    Pooled it
  3. Article
  4. Biology · 2022
    Article
  5. Review
  6. Review
  7. Article
  8. Spectrum ofGenes · 2021
    Article
  9. Review
  10. Review
  11. Genes · 2019
    Article
  12. Article
  13. Article
  14. Frontiers in genetics · 2019
    Article
  15. Genes important for otoneurological diagnostic purposes - current status and future prospects.Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2018
    Review
  16. Review
  17. Article
  18. Article
  19. Etiology and associated GJB2 mutations in Mauritanian children with non-syndromic hearing loss.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2016
    Article
  20. 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

8 authors at 4 institutions in 3 countries.

Rosemary I KabahumaDepartment of Speech Pathology and Audiology, University of Witwatersrand, Johannesburg, South Africa; Division of Human Genetics, National Health Laboratory Service and School of Pathology, University of Witwatersrand, Johannesburg, South Africa; Department of Otorhinolaryngology, Polokwane/Mankweng Hospital Complex, Polokwane, Limpopo Province, South Africa.
Xiaomei Ouyang
Li Lin Du
Denise Yan
Tim Hutchin
Michele Ramsay
Claire Penn
Xue-Zhong Liu
University of Miami · USUniversity of the Witwatersrand · ZABirmingham Children's Hospital · GBNational Health Laboratory Service · ZA

Funding

Molecular Genetics on Non Syndromic Hearing Loss (NSHL)R01DC005575 · NIDCD · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI LIU, XUE Z · 2001 to 2024
$10.6M
Sensory disorders in COVID -19 as an early identifier and healthcare worker protectionR01DC012115 · NIDCD · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI LIU, XUE Z · 2013 to 2022
$7.2M
NIDCD NIH HHS R01 DC005575NIDCD NIH HHS R01 DC012115
6 · The paper itself

Abstract

objectiveThe purpose of this study was to determine the prevalence of mutations in the GJB2 gene, the GJB6-D13S1830 deletion and the four common mitochondrial mutations (A1555G, A3243G, A7511C and A7445G) in a South African population.

methodsUsing single-strand conformation polymorphism and direct sequencing for screening GJB2 mutation; Multiplex PCR Amplification for GJB6-D13S1830 deletion and Restriction Fragment-Length Polymorphism (PCR-RFLP) analysis for the four common mtDNA mutations. We screened 182 hearing impaired students to determine the frequency of these mutations in the population.

resultsNone of the reported disease causing mutations in GJB2 nor any novel pathogenic mutations in the coding region were detected, in contrast to the findings among Caucasians. The GJB6-D13S1830 deletion and the mitochondrial mutations were not observed in this group.

conclusionThese results suggest that GJB2 may not be a significant deafness gene among sub-Saharan Africans, pointing to other unidentified genes as responsible for nonsyndromic hearing loss in these populations.

Indexed as

Gene DeletionAdolescentAfrica South of the SaharaAudiometryBlack PeopleChildChild, PreschoolCohort StudiesConnexin 26ConnexinsDNA, MitochondrialFemaleGenetic Predisposition to DiseaseHearing LossHearing Loss, SensorineuralHearing TestsConnexin 26ConnexinsDNA, MitochondrialGJB2 protein, human

Identifiers

PMID21392827
PMCPMC4303037
OpenAlexW1993079440

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.