Evidence map›Paper›PMID 29956690›Full record

ArticleSaudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association

Genetic susceptibility for celiac disease is highly prevalent in the Saudi population.

Abdulrahman Al-Hussaini, Hanan Alharthi, Awad Osman, Nezar Eltayeb-Elsheikh, Aziz Chentoufi

Open access · diamondAbstract read
In one paragraph

Article in Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 3 pooled it
2.9field-weighted citation impact, top 9% 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

19 citing papers in PubMed, 3 syntheses or guidelines pooled it, 27 citations in OpenAlex.

  1. Pooled it
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  3. Pooled it
  4. Combined ProbioticMolecules (Basel, Switzerland) · 2026
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  16. Frequency of HLA celiac disease risk alleles and haplotypes in healthy adults in Tamil Nadu.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2019
    Article
  17. Health related quality of life among Saudi children and adolescents with celiac disease.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    Article
  18. Social media usage pattern and its influencing factors among celiac patients and their families.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    Article
  19. The puzzling relationship between human leukocyte antigen HLA genes and celiac disease.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Abdulrahman Al-HussainiDivision of Pediatric Gastroenterology, Children's Specialized Hospital, King Fahad Medical City; College of Medicine, Alfaisal University; Prince Abdullah bin Khalid Celiac Disease Research Chair, Department of Pediatrics, Faculty of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
Hanan AlharthiDepartment of Pathology and Laboratory Medicine, Division of Immunology, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia.
Awad OsmanDepartment of Pathology and Laboratory Medicine, Division of Immunology, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia.
Nezar Eltayeb-ElsheikhDepartment of Pathology and Laboratory Medicine, Division of Immunology, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia.
Aziz ChentoufiDepartment of Immunology, University of Mohammed VI for health sciences, Casablanca, Morocco.
King Fahd Medical City · SAKing Khalid University Hospital · SAUniversité Mohammed VI des Sciences de la Santé · MA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimTo determine the frequency of celiac disease (CD)-predisposing human leukocyte antigen (HLA)-DQ genotypes in the Saudi population, where the prevalence of CD is 1.5% as recently reported in a mass screening study. PATIENTS AND

methodsIn a cross-sectional population-based study, a total of 192 randomly selected healthy school children (97 females, mean age 10.5 ± 2.2 years, all negative for tissue transglutaminase-IgA) were typed for D QA1 and D QB1 genes by polymerase chain reaction sequence-specific oligonucleotide probes.

resultsOf the 192 children, 52.7% carried the high-risk CD-associated HLA-DQ molecules: homozygous DQ2.5 ( 2.6%), DQ2.5/DQ2.2 ( 4.7%), heterozygous DQ2.5 ( 28.15%), homozygous DQ8 ( 4.2%), DQ8/DQ2.2 ( 3.6%), and double dose DQ2.2 ( 9.4%). Low-risk CD-associated HLA-DQ molecules (single dose DQ2.2 and heterozygous DQ8) constituted 3.6% and 9.4%, respectively. Among the very low-risk groups, individuals lacking alleles that contribute to DQ2/DQ8 variants (33.5%), 13.5% carried only one of the alleles of the high-risk HLA-DQ2.5 heterodimer called "half-heterodimer" (HLA-DQA1*05 in 12% and HLA-DQB1* 02 in 1.5%), and 20.8% lacked all the susceptible alleles (DQX.x). Gender distribution was not significantly different among the CD-risk groups.

conclusionWe report one of the highest frequencies of CD-predisposing HLA-DQ genotypes among healthy general populations (52.7%) worldwide, which might partly explain the high prevalence of CD in the Saudi community.

Indexed as

AllelesCeliac DiseaseChildCross-Sectional StudiesFemaleGenetic Predisposition to DiseaseGenotypeHistocompatibility TestingHLA-DQ AntigensHumansMalePrevalenceSaudi ArabiaHLA-DQ2 antigenHLA-DQ8 antigenHLA-DQ AntigensCeliac diseasegenetic susceptibilityHLA-DQ2.5HLA-DQ8HLA typingSaudi Arabia

Identifiers

PMID29956690
PMCPMC6152002
OpenAlexW2811160386

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.