Evidence map›Paper›PMID 24517468›Full record

ArticleLiver international : official journal of the International Association for the Study of the Liver2014

Small duct primary sclerosing cholangitis without inflammatory bowel disease is genetically different from large duct disease.

Sigrid Naess, Einar Björnsson, Jarl A Anmarkrud, Said Al Mamari, Brian D Juran, Konstantinos N Lazaridis, Roger Chapman, Annika Bergquist, Espen Melum, Steven G E Marsh and 5 more

Abstract readComparative Study
In one paragraph

Article in Liver international : official journal of the International Association for the Study of the Liver, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.6field-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

15 citing papers in PubMed, 53 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Primary sclerosing cholangitis: review for radiologists.Abdominal radiology (New York) · 2023
    Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Variations in primary sclerosing cholangitis across the age spectrum.Journal of gastroenterology and hepatology · 2017
    Article
  11. Primary Sclerosing Cholangitis.The New England journal of medicine · 2016
    Review
  12. Review
  13. Review
  14. The Immunogenetics of Autoimmune Cholestasis.Clinics in liver disease · 2016
    Review
  15. Review
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

15 authors at 7 institutions in 6 countries.

Sigrid NaessDivision of Cancer Medicine, Surgery and Transplantation, Department of Transplantation Medicine, Norwegian PSC Research Center, Oslo University Hospital, Rikshospitalet, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
Einar Björnsson
Jarl A Anmarkrud
Said Al Mamari
Brian D Juran
Konstantinos N Lazaridis
Roger Chapman
Annika Bergquist
Espen Melum
Steven G E Marsh
Erik Schrumpf
Benedicte A Lie
Kirsten M Boberg
Tom H Karlsen
Johannes R Hov
Oslo University Hospital · NOUniversity of Oslo · NOMayo Clinic · USKarolinska University Hospital · SEReykjavík University · ISSultan Qaboos Hospital · OMUniversity College London · GB

Funding

Type 1 Diabetes Genetics ConsortiumU01DK062418 · NIDDK · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI RICH, STEPHEN S. · 2002 to 2007
$59.8M
PSC Resource Of Genetic Risk, Environment and Synergy Studies (PROGRESS)R01DK084960 · NIDDK · MAYO CLINIC ROCHESTER · PI LAZARIDIS, KONSTANTINOS N · 2010 to 2014
$3.0M
NIDDK NIH HHS DK084960NIDDK NIH HHS R01 DK084960NIDDK NIH HHS U01 DK062418
6 · The paper itself

Abstract

BACKGROUND &

aimsSmall duct primary sclerosing cholangitis (PSC) is phenotypically a mild version of large duct PSC, but it is unknown whether these phenotypes share aetiology. We aimed to characterize their relationship by investigating genetic associations in the human leucocyte antigen (HLA) complex, which represent the strongest genetic risk factors in large duct PSC.

methodsFour classical HLA loci (HLA-A, HLA-B, HLA-C and HLA-DRB1) were genotyped in 87 small duct PSC patients, 485 large duct PSC patients and 1117 controls across three geographical regions.

resultsHLA-DRB1*13:01 (OR = 2.0, 95% CI 1.2-3.4, P = 0.01) and HLA-B*08 (OR = 1.6, 95% CI 1.1-2.4, P = 0.02) were significantly associated with small duct PSC compared with healthy controls. Based on the observed frequency of HLA-B*08 in small duct PSC, the strongest risk factor in large duct PSC, an estimated 32% (95% CI 4-65%) of this population can be hypothesized to represent early stages or mild variants of large duct PSC. This subgroup may be constituted by small duct PSC patients with inflammatory bowel disease (IBD), which greatly resembled large duct PSC in its HLA association. In contrast, small duct PSC without IBD was only associated with HLA-DRB1*13:01(P = 0.03) and was otherwise distinctly dissimilar from large duct PSC.

conclusionsSmall duct PSC with IBD resembles large duct PSC in its HLA association and may represent early stages or mild variants of large duct disease. Different HLA associations in small duct PSC without IBD could indicate that this subgroup is a different entity. HLA-DRB1*13:01 may represent a specific risk factor for inflammatory bile duct disease.

Indexed as

PhenotypeCholangitis, SclerosingGenotypeHLA-B8 AntigenHLA-DRB1 ChainsHumansInflammatory Bowel DiseasesLinkage DisequilibriumNorwayOdds RatioRisk FactorsSwedenUnited KingdomUnited StatesHLA-B8 AntigenHLA-DRB1*13:01 antigenHLA-DRB1 Chainshuman leucocyte antigensinflammatory bowel diseaselarge ductprimary sclerosing cholangitissmall duct

Identifiers

PMID24517468
PMCPMC4128902
OpenAlexW2080459269

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.