Evidence map›Paper›PMID 33758031›Full record

ArticlemSystems2021

Fungal and Bacterial Loads: Noninvasive Inflammatory Bowel Disease Biomarkers for the Clinical Setting.

G Sarrabayrouse, A Elias, F Yáñez, L Mayorga, E Varela, C Bartoli, F Casellas, N Borruel, C Herrera de Guise, K Machiels and 2 more

Open access · goldAbstract read
In one paragraph

Article in mSystems, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 15% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. A Review on the Molecular Dynamics of EnterotypeInternational journal of molecular sciences · 2026
    Review
  4. Purification and Transcriptomic Characterization of Hypertrophied Hepatic Stellate Cells From CDAHFD Mouse Liver.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. The Gut Mycobiome for Precision Medicine.Journal of fungi (Basel, Switzerland) · 2025
    Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. 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

12 authors at 3 institutions in 2 countries.

G Sarrabayrouse *Department of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
A Elias *Department of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
F YáñezDepartment of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
L MayorgaDepartment of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
E VarelaDepartment of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
C BartoliDepartment of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
F CasellasDepartment of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
N BorruelDepartment of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
C Herrera de GuiseDepartment of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain.
K MachielsTranslational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases Metabolism and Ageing, KU Leuven, Leuven, Belgium.
S VermeireTranslational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases Metabolism and Ageing, KU Leuven, Leuven, Belgium.
C ManichanhDepartment of Gastroenterology, Vall d'Hebron Research Institute, Barcelona, Spain cmanicha@gmail.com.ORCID https://orcid.org/0000-0002-2287-4003
Vall d'Hebron Institut de Recerca · ESInstituto de Salud Carlos III · ESKU Leuven · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Microbiome sequence data have been used to characterize Crohn's disease (CD) and ulcerative colitis (UC). Based on these data, we have previously identified microbiomarkers at the genus level to predict CD and CD relapse. However, microbial load was underexplored as a potential biomarker in inflammatory bowel disease (IBD). Here, we sought to study the use of fungal and bacterial loads as biomarkers to detect both CD and UC and CD and UC relapse. We analyzed the fecal fungal and bacterial loads of 294 stool samples obtained from 206 participants using real-time PCR amplification of the ITS2 region and the 16S rRNA gene, respectively. We combined the microbial data with demographic and standard laboratory data to diagnose ileal or ileocolonic CD and UC and predict disease relapse using the random forest algorithm. Fungal and bacterial loads were significantly different between healthy relatives of IBD patients and nonrelated healthy controls, between CD and UC patients in endoscopic remission, and between UC patients in relapse and non-UC individuals. Microbial load data combined with demographic and standard laboratory data improved the performance of the random forest models by 18%, reaching an average area under the receiver operating characteristic curve (AUC) of 0.842 (95% confidence interval [CI], 0.65 to 0.98), for IBD diagnosis and enhanced CD and UC discrimination and CD and UC relapse prediction. Our findings show that fecal fungal and bacterial loads could provide physicians with a noninvasive tool to discriminate disease subtypes or to predict disease flare in the clinical setting.

Indexed as

Crohn’s disease and ulcerative colitisdiagnosis and prognosisinflammatory bowel diseasemachine learning algorithmmicrobial loadprediction

Identifiers

PMID33758031
PMCPMC8547002
OpenAlexW3138260953

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.