Evidence map›Paper›PMID 34980267›Full record

SynthesisJournal of health, population, and nutrition2022

Helicobacter pylori cagA status and gastric mucosa-associated lymphoid tissue lymphoma: a systematic review and meta-analysis.

Masoud Keikha, Amirhossein Sahebkar, Yoshio Yamaoka, Mohsen Karbalaei

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of health, population, and nutrition, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
7.0field-weighted citation impact, top 2% 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

19 citing papers in PubMed, 32 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Mitochondrial Stress inAntioxidants (Basel, Switzerland) · 2026
    Review
  5. Article
  6. Analysis of antibiotic resistance and cagPAI variability in Helicobacter pylori strains from Malaysian patients.International microbiology : the official journal of the Spanish Society for Microbiology · 2025
    Article
  7. Review
  8. Review
  9. Review
  10. Article
  11. [Characteristics of Gastric Mucosa-associated Lymphoid Tissue Lymphoma in Korea].The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi · 2024
    Review
  12. The role ofHeliyon · 2024
    Article
  13. Total worker healthCurrent opinion in epidemiology and public health · 2024
    Article
  14. Article
  15. Article
  16. Roles of the components of theFuture microbiology · 2024
    Review
  17. Inflammation and Digestive Cancer.International journal of molecular sciences · 2023
    Review
  18. Article
  19. Therapeutic eradication choices inTherapeutic advances in gastroenterology · 2023
    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

4 authors at 3 institutions in 2 countries.

Masoud KeikhaDepartment of Microbiology and Virology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Amirhossein SahebkarBiotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
Yoshio YamaokaDepartment of Environmental and Preventive Medicine, Faculty of Medicine, Oita University, Yufu, Oita, Japan.
Mohsen KarbalaeiDepartment of Microbiology and Virology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran. mohsen.karbalaei@jmu.ac.ir.ORCID 0000-0001-9899-2885
Mashhad University of Medical Sciences · IROita University · JPUniversity of Jiroft · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRecent studies have investigated the role of Helicobacter pylori infection in the development of gastric mucosa-associated lymphoid tissue (MALT) lymphoma. It is estimated that approximately 0.1% of people infected with H. pylori develop gastric MALT lymphoma. However, the role of the CagA antigen, the highest causative agent of H. pylori, in increasing the risk of gastric MALT lymphoma remains unclear and controversial. A systematic review and meta-analysis were conducted to evaluate the effect of cagA status on the development of gastric MALT lymphoma.

methodsAll articles evaluating the status of the cagA gene in the development of gastric MALT lymphoma were collected using systematic searches in online databases, including PubMed, Scopus, Embase, and Google Scholar, regardless of publication date. The association between cagA and gastric MALT lymphoma was assessed using the odds ratio (OR) summary. In addition, a random-effects model was used in cases with significant heterogeneity.

resultsA total of 10 studies met our inclusion criteria, among which 1860 patients participated. No association between cagA status and the development of MALT lymphoma (extranodal marginal zone B-cell lymphoma) was found in this study (OR 1.30; 0.906-1.866 with 95% CIs; I

conclusionsIt seems that the infection with cagA-positive H. pylori strains does not have a meaningful effect on the gastric MALT lymphoma formation, while translocated CagA antigen into the B cells plays a crucial role in the development of diffuse large B-cell lymphoma.

Indexed as

Helicobacter InfectionsHelicobacter pyloriLymphoma, B-Cell, Marginal ZoneStomach NeoplasmsHumansCagA antigenGastric MALT lymphomaHelicobacter pyloriMeta-analysis

Identifiers

PMID34980267
PMCPMC8722127
OpenAlexW4225908359

What Socratic 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 Socratic graph.