Evidence map›Paper›PMID 8707084›Full record

ArticleGut1996

HLA class II gene frequencies in Crohn's disease: a population based analysis in Germany.

M Reinshagen, C Loeliger, P Kuehnl, U Weiss, B J Manfras, G Adler, B O Boehm

Open access · bronzeAbstract read
In one paragraph

Article in Gut, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 7% 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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 79 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  6. Role of HLA typing on Crohn's disease pathogenesis.Annals of medicine and surgery (2012) · 2015
    Article
  7. Article
  8. Genetics of inflammatory bowel disease: current status and future directions.Canadian journal of gastroenterology = Journal canadien de gastroenterologie · 2006
    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

7 authors at 1 institution in 1 country.

M ReinshagenDepartment of Medicine I, University of Ulm, Germany.
C Loeliger
P Kuehnl
U Weiss
B J Manfras
G Adler
B O Boehm
Universität Ulm · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundUlcerative colitis is the only known inflammatory bowel disease associated with particular HLA alleles. Whereas the association with the HLA-DRB1*15 allele has been described in several independent studies for ulcerative colitis, no contribution of HLA alleles to susceptibility in Crohn's disease has yet been shown.

aimThis study was designed to study the strength of association of HLA class II alleles as risk markers for Crohn's disease in a homogenous population in Germany. PATIENTS: A total of 4251 randomly selected control subjects, and 162 unrelated subjects with Crohn's disease were studied. Subjects were studied for their HLA-DRB1, HLA-DQA1, and HLA-DQB1 alleles.

methodHLA DNA typing was performed after locus specific amplification with the polymerase chain reaction and reverse dot blot hybridisation.

resultsThe HLA-DRB1*07 was the only HLA class II allele found to be significantly associated with Crohn's disease (relative risk (RR) = 1.9, 95% CI: 1.66 to 2.14; p = 0.0001). This association remained significant after correction for the number of DRB1 alleles compared. In patients with disease onset before 35 years the RR for the disease in HLA-DRB1*07 positive subjects was found to be higher (RR = 3.1, 95% CI: 2.44 to 3.76). The HLA-DRB1*03 was significantly decreased in frequency in Crohn's disease (RR = 0.5, 95% CI: 0.39 to 0.61; p = 0.0028).

conclusionThe HLA-DRB1*07 allele provides risk for the disease especially in patients with younger ages of onset. These data also provide indirect evidence for an immunogenetically based heterogeneity of the disease.

Indexed as

AllelesGene FrequencyGenes, MHC Class IIAdolescentAdultAgedBase SequenceCase-Control StudiesChildCrohn DiseaseFemaleGermanyHLA-DQ AntigensHLA-DR AntigensHumansMaleHLA-DQ AntigensHLA-DR Antigens

Identifiers

PMID8707084
PMCPMC1383111
OpenAlexW2015753655

What OpenQuestion holds

Textmetadata
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.