Evidence map›Paper›PMID 34225839›Full record

SynthesisHealth technology assessment (Winchester, England)2021

Prognostic biomarkers to identify patients likely to develop severe Crohn's disease: a systematic review.

Steve Halligan, Darren Boone, Lucinda Archer, Tariq Ahmad, Stuart Bloom, Manuel Rodriguez-Justo, Stuart A Taylor, Sue Mallett

Open access · diamondAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Health technology assessment (Winchester, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

10 citing papers in PubMed, 15 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Analysis of the risk of future gastrointestinal surgery in Crohn's disease with stricture.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association · 2024
    Article
  8. Article
  9. Article
  10. 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

8 authors at 4 institutions in 1 country.

Steve HalliganCentre for Medical Imaging, University College London, London, UK.ORCID 0000-0003-0632-5108
Darren BooneCentre for Medical Imaging, University College London, London, UK.ORCID 0000-0002-3178-9791
Lucinda ArcherCentre for Prognosis Research, School of Primary, Community and Social Care, Keele University, Keele, UK.ORCID 0000-0003-2504-2613
Tariq AhmadDepartment of Gastroenterology, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK.ORCID 0000-0002-6058-5528
Stuart BloomDepartment of Gastroenterology, University College Hospital, London, UK.ORCID 0000-0002-6361-4662
Manuel Rodriguez-JustoDepartment of Histopathology, University College Hospital, London, UK.ORCID 0000-0001-5007-1761
Stuart A TaylorCentre for Medical Imaging, University College London, London, UK.ORCID 0000-0002-6765-8806
Sue MallettCentre for Medical Imaging, University College London, London, UK.ORCID 0000-0002-0596-8200
University College London · GBUniversity College Hospital · GBKeele University · GBRoyal Devon & Exeter NHS Foundation Trust · GB

Funding

Department of Health
6 · The paper itself

Abstract

backgroundIdentification of biomarkers that predict severe Crohn's disease is an urgent unmet research need, but existing research is piecemeal and haphazard.

objectiveTo identify biomarkers that are potentially able to predict the development of subsequent severe Crohn's disease.

designThis was a prognostic systematic review with meta-analysis reserved for those potential predictors with sufficient existing research (defined as five or more primary studies). DATA SOURCES: PubMed and EMBASE searched from inception to 1 January 2016, updated to 1 January 2018. REVIEW

methodsEligible studies were studies that compared biomarkers in patients who did or did not subsequently develop severe Crohn's disease. We excluded biomarkers that had insufficient research evidence. A clinician and two statisticians independently extracted data relating to predictors, severe disease definitions, event numbers and outcomes, including odds/hazard ratios. We assessed risk of bias. We searched for associations with subsequent severe disease rather than precise estimates of strength. A random-effects meta-analysis was performed separately for odds ratios.

resultsIn total, 29,950 abstracts yielded just 71 individual studies, reporting 56 non-overlapping cohorts. Five clinical biomarkers (Montreal behaviour, age, disease duration, disease location and smoking), two serological biomarkers (anti- LIMITATIONS: Definitions of severe disease varied widely, and some studies confounded diagnosis and prognosis. Risk of bias was rated as 'high' in 92% of studies overall. Some biomarkers that are used regularly in daily practice, for example C-reactive protein, were studied too infrequently for meta-analysis.

conclusionsResearch for individual biomarkers to predict severe Crohn's disease is scant, heterogeneous and at a high risk of bias. Despite a large amount of potential research, we encountered relatively few biomarkers with data sufficient for meta-analysis, identifying only eight biomarkers with potential predictive capability. FUTURE WORK: We will use existing data sets to develop and then validate a predictive model based on the potential predictors identified by this systematic review. Contingent on the outcome of that research, a prospective external validation may prove clinically desirable. STUDY REGISTRATION: This study is registered as PROSPERO CRD42016029363.

fundingThis project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in

Indexed as

Crohn DiseaseBiomarkersHumansImmunologic TestsPrognosisProspective StudiesBiomarkersBIOLOGICAL MARKERSBIOMARKERSCROHN’S DISEASEDIAGNOSTIC ACCURACYMETA-ANALYSISPREDICTIONPROGNOSISREVIEW, SYSTEMATIC

Identifiers

PMID34225839
PMCPMC8287380
OpenAlexW3178741347

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.