Evidence map›Paper›PMID 31580701›Full record

ArticleAnnals of Saudi medicine

MTNR1B genetic polymorphisms as risk factors for gestational diabetes mellitus: a case-control study in a single tertiary care center.

Khalid Khalaf Alharbi, Abdulrahman Mohammed Al-Sulaiman, Khalid Muath Bin Shedaid, Ali M Al-Shangiti, Mohammed Marie, Yazeed A Al-Sheikh, Imran Ali Khan

Open access · diamondAbstract read
In one paragraph

Article in Annals of Saudi medicine. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
5.2field-weighted citation impact, top 4% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
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  14. No Association BetweenDiabetes, metabolic syndrome and obesity : targets and therapy · 2021
    Article
  15. Relationship Between Serum Amyloid A1 (Diabetes, metabolic syndrome and obesity : targets and therapy · 2021
    Article
  16. 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

7 authors at 2 institutions in 1 country.

Khalid Khalaf AlharbiFrom the Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia.
Abdulrahman Mohammed Al-SulaimanFrom the Department of Medical and Molecular Virology, Prince Sultan Military Medical City, Riyadh, Saudi Arabia.
Khalid Muath Bin ShedaidFrom the Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia.
Ali M Al-ShangitiFrom the Ministry of Health, Riyadh, Saudi Arabia.
Mohammed MarieFrom the Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia.
Yazeed A Al-SheikhFrom the Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia.
Imran Ali KhanFrom the Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia.
King Saud University · SARiyadh Armed Forces Hospital · SA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGestational diabetes mellitus (GDM) is a metabolic disease in pregnancy that causes carbohydrate intolerance and hyper-glycemia. Genome-wide association studies and meta-analyses have found that the single nucleotide polymorphisms (SNPs) rs1387153 and rs10830963 of the melatonin receptor 1B ( MTNR1B) gene are associated with GDM. No studies on the MTNR1B gene effect on GDM have been performed in Saudis, other Arabs, or other Middle Eastern populations.

objectivesInvestigate the association of genotype or allele frequencies of the two SNPs with GDM and with clinical parameters related to GDM.

designCase-control study. SETTINGS: Tertiary care center, Riyadh. PATIENTS AND

methodsWe recruited 400 pregnant Saudi women ages 18-45 years (200 were diagnosed with GDM, and 200 were healthy controls). Biochemical assays were performed, and rs1387153 and rs10830963 polymorphisms were analyzed by polymerase chain reaction-restriction fragment length polymorphism analysis and real-time polymerase chain reaction with TaqMan genotyping.

main outcome measuresThe association of MTNR1B gene (rs1387153 and rs10830963 polymorphisms) with GDM and with biochemical parameters related to GDM. SAMPLE SIZE: 200 GDM cases and 200 non-GDM controls.

resultsDifferences in allele frequencies for GDM vs non-GMD were statistically significant or nearly significant for both SNPs after adjustment for age and body mass index. In a logistic regression analysis, genotype TT was positively associated with post-prandial blood glucose (P=.018), but other associations were not statistically significant.

conclusionThe odds ratios for the associations between the rs1387153 and rs10830963 SNPs and GDM exceeded 1.5-fold, which is higher than typically reported for diseases with complex genetic background. These effect sizes for GDM suggest pregnancy-specific factors related to the MTNR1B risk genotypes. LIMITATIONS: Only two SNPs were studied. CONFLICT OF INTEREST: None.

Indexed as

Genetic Predisposition to DiseaseAdolescentAdultCase-Control StudiesDiabetes, GestationalFemaleGene FrequencyGenotypeHumansMiddle AgedPolymorphism, Single NucleotidePregnancyReceptor, Melatonin, MT2Risk FactorsSaudi ArabiaTertiary Care CentersMTNR1B protein, humanReceptor, Melatonin, MT2

Identifiers

PMID31580701
PMCPMC6832319
OpenAlexW2978854507

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.