Evidence map›Paper›PMID 32851498›Full record

ArticleDigestive diseases and sciences2021

Understanding Fatigue in Primary Biliary Cholangitis.

Naw April Phaw, Jessica Katharine Dyson, George Mells, David Jones

Abstract read
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In one paragraph

Article in Digestive diseases and sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 18% 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, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Fatigue and Cognitive Impairment in Adults With Primary Sclerosing Cholangitis: Results From Concept Elicitation Interviews.Liver international : official journal of the International Association for the Study of the Liver · 2026
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  9. Observational
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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

4 authors at 3 institutions in 1 country.

Naw April PhawInstitute of Translational and Clinical Research, Level 4 William Leech Building, Newcastle University, Framlington Place, Newcastle-upon-Tyne, NE2 4HH, UK.
Jessica Katharine DysonInstitute of Translational and Clinical Research, Level 4 William Leech Building, Newcastle University, Framlington Place, Newcastle-upon-Tyne, NE2 4HH, UK.
George MellsDepartment of Hepatology, Cambridge University Hospital NHS Foundation Trust, Cambridge, UK.
David JonesInstitute of Translational and Clinical Research, Level 4 William Leech Building, Newcastle University, Framlington Place, Newcastle-upon-Tyne, NE2 4HH, UK. david.joines@newcastle.ac.uk.
Newcastle University · GBCambridge University Hospitals NHS Foundation Trust · GBNewcastle upon Tyne Hospitals NHS Foundation Trust · GB

Funding

Medical Research Council G0800460Medical Research Council MR/L001489/1Medical Research Council MR/T023848/1
6 · The paper itself

Abstract

backgroundFatigue affects 50% of primary biliary cholangitis patients and is severe in approximately 20%, significantly affecting quality of life. The pathogenesis of fatigue in primary biliary cholangitis is poorly understood. This study aimed to explore subgroups of fatigue to support targeting of selected groups in future clinical trials.

methodsData were derived from the UK-PBC cohort. Participants completed the PBC-40, Hospital Anxiety and Depression Score, Epworth Sleepiness Scale, and Orthostatic Grading Scale for symptoms assessment. Fatigue and cognitive symptoms were regarded as clinically significant if they exceeded the previously defined cutoff for "moderate" symptom.

resultsOf 2002, patients for whom full PBC-40, fatigue, and cognitive symptom domain scores were available, 1203 (60%) had significant fatigue and 730 (36%) had significant cognitive symptoms. Among the 1203 patients with significant fatigue, 663 (55%) also had significant cognitive symptoms (termed fatigue with cognitive symptoms) with a significant linear association between the fatigue and cognitive symptom severity. "Fatigue with cognitive symptoms" patients were younger and more likely to have severe fatigue. They also experienced greater social and emotional impact.

conclusionsFatigue in PBC is complex, and there has been no progress to date in identifying therapies able to improve it. One factor in slow progress may be the heterogeneity of patients describing fatigue complicating effective cohort selection for clinical trials. This study has identified potential discrete subgroups of fatigued patients with and without cognitive symptoms. The group of patients expressing "fatigue with cognitive symptoms" was homogenous and may represent a coherent cohort for clinical trials.

Indexed as

AgedCholagogues and CholereticsCohort StudiesFatigueFemaleHumansLiver Cirrhosis, BiliaryMaleMiddle AgedUrsodeoxycholic AcidCholagogues and CholereticsUrsodeoxycholic AcidCholestasisCognitive impairmentFatiguePrimary biliary cholangitis

Identifiers

PMID32851498
OpenAlexW3080661138

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.