Evidence map›Paper›PMID 26248534›Full record

ArticleRheumatology international2015

Prevalence of HLA-B27 in Moroccan healthy subjects and patients with ankylosing spondylitis and mapping construction of several factors influencing AS diagnosis by using multiple correspondence analysis.

Amal Akassou, Hanae Yacoubi, Afaf Jamil, Nadia Dakka, Saaïd Amzazi, Khalid Sadki, Redouane Niamane, Selma Elhassani, Youssef Bakri

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In one paragraph

Article in Rheumatology international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
1.3field-weighted citation impact, top 21% 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, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Global epidemiology of spondyloarthritis.Nature reviews. Rheumatology · 2025
    Review
  4. Article
  5. Observational
  6. Review
  7. Article
  8. Ankylosing spondylitis: analysis of gene-gene interactions betweenCentral-European journal of immunology · 2019
    Article
  9. Does HLA-B27 Status Influence Ankylosing Spondylitis Phenotype?Clinical medicine insights. Arthritis and musculoskeletal disorders · 2018
    Review
  10. Review
  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

9 authors at 2 institutions in 1 country.

Amal AkassouLaboratory of Biochemistry and Immunology, Faculty of Sciences, University Mohammed V-Agdal, Avenue Ibn Battouta, BP1014, Rabat, Morocco. akassouamal@gmail.com.
Hanae YacoubiRheumatology Department, Mohammed VI Medical Center, Marrakesh, Morocco.
Afaf JamilLaboratory of Biochemistry and Immunology, Faculty of Sciences, University Mohammed V-Agdal, Avenue Ibn Battouta, BP1014, Rabat, Morocco.
Nadia DakkaLaboratory of Biochemistry and Immunology, Faculty of Sciences, University Mohammed V-Agdal, Avenue Ibn Battouta, BP1014, Rabat, Morocco.
Saaïd AmzaziLaboratory of Biochemistry and Immunology, Faculty of Sciences, University Mohammed V-Agdal, Avenue Ibn Battouta, BP1014, Rabat, Morocco.
Khalid SadkiLaboratory of Biochemistry and Immunology, Faculty of Sciences, University Mohammed V-Agdal, Avenue Ibn Battouta, BP1014, Rabat, Morocco.
Redouane NiamaneRheumatology Department, Mohammed VI Medical Center, Marrakesh, Morocco.
Selma ElhassaniRheumatology Department, Mohammed VI Medical Center, Marrakesh, Morocco.
Youssef BakriLaboratory of Biochemistry and Immunology, Faculty of Sciences, University Mohammed V-Agdal, Avenue Ibn Battouta, BP1014, Rabat, Morocco.
Mohammed V University · MACentre Hospitalier Universitaire Mohammed VI · MA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of the present study was to determine the prevalence of human leukocyte antigen HLA-B27 in Moroccan healthy controls and in patients with ankylosing spondylitis (AS), and to analyze the correlation between HLA-B27 and AS in Moroccan patients. The prevalence of HLA-B27 was determined by evaluating the number of HLA-B27-positive samples in 128 healthy subjects and in 53 patients diagnosed with AS according to the ESSG and AMOR criteria. HLA-B27 was determined by the polymerase chain reaction using sequence-specific primers. Multivariate analysis of our data (HLA-B27, age, sex, and family history) for AS and healthy controls was performed by multiple correspondence analysis (MCA). The frequency of HLA-B27 was significantly greater in AS patients (45.3 %) than in healthy controls (4.7 %) [p < 0.0001, OR 16.8, and CI 95 % (5.83-51.03)]. In addition, HLA-B27 was more common in male patients than in female ones (p < 0.05). 100 % of the AS patients reported a family history of AS, whereas only 20 % of the healthy controls reported a family history of AS. The graphical interpretation of MCA showed a significant relation between the presence of HLA-B27 and AS. This study strengthens the link between HLA-B27 and AS and represents a very valuable informative diagnostic tool, especially in regard to male patients who have a family history of AS.

Indexed as

AdolescentAdultBlack PeopleCase-Control StudiesChi-Square DistributionFemaleGene FrequencyGenetic Association StudiesGenetic Predisposition to DiseaseHLA-B27 AntigenHumansMaleMiddle AgedMoroccoMultivariate AnalysisOdds RatioHLA-B27 AntigenAnkylosing spondylitisHLA-B27Moroccan populationMultiple correspondence analysis

Identifiers

PMID26248534
OpenAlexW1114748976

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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.