Evidence map›Paper›PMID 31611342›Full record

ArticleThorax2019

Biomarkers of iron metabolism facilitate clinical diagnosis in

Youchao Dai, Wanshui Shan, Qianting Yang, Jiubiao Guo, Rihong Zhai, Xiaoping Tang, Lu Tang, Yaoju Tan, Yi Cai, Xinchun Chen

Open access · hybridAbstract readMulticenter StudyValidation Study
In one paragraph

Article in Thorax, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
3.2field-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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Revolutionizing diagnosis of pulmonaryFrontiers in microbiology · 2024
    Pooled it
  2. CD4Frontiers in cellular and infection microbiology · 2026
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  16. Frontiers in cellular and infection microbiology · 2023
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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

10 authors at 5 institutions in 2 countries.

Youchao DaiGuangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China.
Wanshui ShanShenzhen Key Laboratory of Infection & Immunity, Shenzhen Third People's Hospital, Shenzhen University School of Medicine, Shenzhen, China.
Qianting YangShenzhen Key Laboratory of Infection & Immunity, Shenzhen Third People's Hospital, Shenzhen University School of Medicine, Shenzhen, China.
Jiubiao GuoGuangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China.
Rihong ZhaiDepartment of Preventive Medicine, Shenzhen University Health Science Center, Shenzhen, Guangdong, China.
Xiaoping TangResearch Institute of Infectious Diseases, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China.
Lu TangDepartment of Biostatistics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Yaoju TanState Key Laboratory of Respiratory Disease, Department of Clinical Laboratory, Guangzhou Chest Hospital, Guangzhou, China.
Yi CaiGuangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China.
Xinchun ChenGuangdong Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China chenxinchun@szu.edu.cn.ORCID 0000-0003-2816-0076
Shenzhen University · CNGuangzhou Eighth People's Hospital · CNShenzhen University Health Science Center · CNState Key Laboratory of Respiratory Disease · CNUniversity of Pittsburgh · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPerturbed iron homeostasis is a risk factor for tuberculosis (TB) progression and an indicator of TB treatment failure and mortality. Few studies have evaluated iron homeostasis as a TB diagnostic biomarker.

methodsWe recruited participants with TB, latent TB infection (LTBI), cured TB (RxTB), pneumonia (PN) and healthy controls (HCs). We measured serum levels of three iron biomarkers including serum iron, ferritin and transferrin, then established and validated our prediction model.

resultsWe observed and verified that the three iron biomarker levels correlated with patient status (TB, HC, LTBI, RxTB or PN) and with the degree of lung damage and bacillary load in patients with TB. We then built a TB prediction model, neural network (NNET), incorporating the data of the three iron biomarkers. The model showed good performance for diagnosis of TB, with 83% (95% CI 77 to 87) sensitivity and 86% (95% CI 83 to 89) specificity in the training data set (n=663) and 70% (95% CI 58 to 79) sensitivity and 92% (95% CI 86 to 96) specificity in the test data set (n=220). The area under the curves (AUCs) of the NNET model to discriminate TB from HC, LTBI, RxTB and PN were all >0.83. Independent validation of the NNET model in a separate cohort (n=967) produced an AUC of 0.88 (95% CI 0.85 to 0.91) with 74% (95% CI 71 to 77) sensitivity and 92% (95% CI 87 to 96) specificity.

conclusionsThe established NNET TB prediction model discriminated TB from HC, LTBI, RxTB and PN in a large cohort of patients. This diagnostic assay may augment current TB diagnostics.

Indexed as

AdolescentAdultBiomarkersDiagnosis, DifferentialFeasibility StudiesFemaleFerritinsHomeostasisHumansIronLatent TuberculosisMaleMiddle AgedNeural Networks, ComputerPneumoniaPredictive Value of TestsBiomarkersFerritinsIronTransferrindiagnostic biomarkeriron homeostasisneural network modelreceive operating characteristic (roc)tuberculosis

Identifiers

PMID31611342
PMCPMC6902069
OpenAlexW2979952761

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.