SynthesisClinical and translational gastroenterology2025
Proportion and Characteristics of Helicobacter Pylori -Negative Gastric Mucosa-Associated Lymphoid Tissue Lymphoma: A Systematic Review and Meta-Analysis.
Synthesis in Clinical and translational gastroenterology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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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.
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Who cites it
1 citing paper in PubMed.
- Gastric MALT Lymphoma in Plummer-Vinson Syndrome: Broadening the Spectrum of Associated Malignancies.ACG case reports journal · 2026Article
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Authors and funding
7 authors.
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Abstract
introductionWhile Helicobacter pylori ( H . pylori ) infection is common in patients with gastric mucosa-associated lymphoid tissue (MALT) lymphoma, there are still individuals who test negative for it. The proportion and characteristics of these patients remain unclear.
methodsWe conducted a systematic search of the PubMed, Embase, and Cochrane Library databases for relevant articles. Using a random-effects model, we performed a meta-analysis to assess the pooled proportion of gastric MALT lymphoma patients with negative H. pylori tests. In addition, we compared characteristics between gastric MALT lymphoma patients with and without H. pylori infection to examine clinical features in H. pylori -negative cases.
resultsA total of 50 studies involving 6,033 patients were included. The overall proportion of gastric MALT lymphoma patients with negative H. pylori tests was 20.5% (95% confidence interval: 17.0%-24.6%). This rate exhibited an increasing trend over the years, particularly in non-Asian countries and in studies published after 2013, as well as in cases with sample sizes exceeding 100 patients, in male individuals, and among those with proximal or multiple lesions, nonsuperficial type morphology, submucosal invasion, and advanced clinical staging. Compared with H. pylori -positive patients, those who tested negative were more likely to be male, have proximal lesions, exhibit submucosal invasion, and present with an advanced clinical stage. DISCUSSION: This study provides comprehensive information on the proportion and characteristics of H. pylori -negative gastric MALT lymphoma cases, highlighting the need for future clinical attention to treatment and surveillance in this patient population.
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