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  4. Mutations in Helicobacter pylori infected patients with chronic gastritis, intestinal type of gastric cancer and familial gastric cancer
 
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Mutations in Helicobacter pylori infected patients with chronic gastritis, intestinal type of gastric cancer and familial gastric cancer

Type
Journal article
Language
English
Date issued
2024
Author
Hnatyszyn, Andrzej
Szalata, Marlena 
Zielińska, Aleksandra
Wielgus, Karolina
Danielewski, Mikołaj
Hnatyszyn, Piotr Tomasz
Pławski, Andrzej
Walkowiak, Jarosław
Słomski, Ryszard
Faculty
Wydział Rolnictwa, Ogrodnictwa i Bioinżynierii
Journal
Hereditary Cancer in Clinical Practice
ISSN
1731-2302
DOI
10.1186/s13053-024-00282-8
Web address
https://hccpjournal.biomedcentral.com/articles/10.1186/s13053-024-00282-8
Volume
22
Pages from-to
art. 9
Abstract (EN)
Background Development of sequential changes of mucous leading to gastric cancer and familial cases of gastric cancer of intestinal type is widely connected with Helicobacter pylori infections. In this study we analysed variants of genes involved in cancerogenesis and inflammatory processes of intestines in patients infected with H.pylori. Our goal was to test whether mutations in these genes predestinate to development of gastric cancer, and whether there is a genetic factor that makes it more likely for infections with H.pylori to cause gastric cancer. As infections with H. pylori are relatively common, discovering such genetic predispositions could be used for establishing risk-groups and for planning treatments. Methods Our studies cover analysis of variants in genes involved in cancerogenesis: TP53 (rs11540652, rs587782329, COSM10771), MSH2 (rs193922376), MLH1 (rs63750217), and inflammatory processes of intestine: NOD2 (rs2066847, rs2066842), IL1A (rs1800587) and IL1B (rs1143634) from H.pylori-infected patients. Results Mutations were more common in the group of patients with gastric cancer of intestinal type and familial cases of gastric cancer in comparison with patients with chronic gastritis, chronic atrophic gastritis, intestinal metaplasia, dysplasia or gastric cancer (p-value=0.00824), with the prevalence of p53 mutations in patients with familial gastric cancer vs. patients with other changes of mucosa (p-value=0.000049). Additionally, gastric cancer patients have mainly genotype TT or CT of the rs2066842 variant of the NOD2 gene. Conclusions The lack of statistically significant changes of other interleukin genes involved in inflammatory processes may suggest the presence of H.pylori infection as a potential trigger for the development of the inflammatory process of the mucosa, leading through microbiota dysbiosis to the development of enteric gastric cancer. Mutations in analysed genes correlated with more severe mucosal changes, with a much more frequent presence of TP53 gene mutations, with a limited presence of other mutations in the familial history of gastric cancer.
Keywords (EN)
  • Helicobacter pylori

  • Chronic gastritis

  • Intestinal type of gastric cance...

  • Familial gastric cancer

  • DNA variants

  • Molecular diagnostics

  • TP53

  • NOD2

License
cc-bycc-by CC-BY - Attribution
Open access date
June 12, 2024
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