Evidence map›Paper›PMID 33980654›Full record

ArticleJournal of clinical microbiology2021

Mycoplasma pneumoniae P1 Genotype Indicates Severity of Lower Respiratory Tract Infections in Children.

Jasna Rodman Berlot, Uroš Krivec, Tatjana Mrvič, Rok Kogoj, Darja Keše

Open access · greenAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

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

  1. Global molecular epidemiology ofEmerging microbes & infections · 2026
    Pooled it
  2. Reporting macrolide-resistantJournal of clinical microbiology · 2026
    Review
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  5. Immune dysregulation inFrontiers in immunology · 2026
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  7. Article
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  10. Article
  11. P1 adhesin genotype characteristics ofFrontiers in cellular and infection microbiology · 2025
    Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. The Association betweenMicroorganisms · 2023
    Article
  17. Molecular Tools for TypingFrontiers in microbiology · 2022
    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

5 authors at 2 institutions in 1 country.

Jasna Rodman BerlotUnit for Pulmonary Diseases, University Children's Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia.
Uroš KrivecUnit for Pulmonary Diseases, University Children's Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia.
Tatjana MrvičDepartment of Infectious Diseases, University Medical Centre Ljubljana, Ljubljana, Slovenia.
Rok KogojInstitute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
Darja KešeInstitute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
Ljubljana University Medical Centre · SIUniversity of Ljubljana · SI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mycoplasma pneumoniae strains can be classified into two major genetic groups, P1 type 1 (P1-1) and P1 type 2 (P1-2). It remains unknown if clinical manifestations of lower respiratory tract infections (LRTI) in children differ between the two genotypes. We aimed to determine if the M. pneumoniae P1 genotype is associated with severity of LRTI in children. Medical charts of 420 children (≤15 years old) with signs of acute LRTI who were PCR positive for M. pneumoniae from pharyngeal swabs in a recent M. pneumoniae epidemic were analyzed. We used a culture and pyrosequencing approach for genotyping PCR-positive samples. We compared epidemiological and clinical data of children with either P1-1 or P1-2 LRTI. P1-2-infected children presented with a significantly higher median baseline C-reactive protein level and were admitted to the hospital more often. The P1 genotype had a significant predictive value in a multiple linear regression model predicting C-reactive protein levels in our study sample. Moreover, the P1 genotype significantly affected the likelihood of hospital admission in a logistic regression model. Our modeling results were also confirmed on an additional independent sample of children with M. pneumoniae LRTI. Results from our large patient group indicate that the two M. pneumoniae P1 genotypes may have different pathogenic potential and that LRTI with P1-2 strains may have a more severe disease course than those with P1-1 strains in children. P1 genotyping is not routinely performed but could be used as a predictor of M. pneumoniae LRTI severity, enabling patient-tailored treatments.

Indexed as

Pneumonia, MycoplasmaRespiratory Tract InfectionsAdolescentAnti-Bacterial AgentsChildGenotypeHumansMycoplasma pneumoniaeAnti-Bacterial AgentschildrengenotypeMycoplasma pneumoniaeP1 proteinrespiratory tract infection

Identifiers

PMID33980654
PMCPMC8288276
OpenAlexW3162814913

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.