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Genetic Alterations in Gastric Tumors Showing Gastric-type Differentiation Kazuhiro Yamanoi 1 , Shigeki Sekine 1,2 1Division of Diagnostic Pathology, Keio University School of Medicine, Tokyo 2Department of Pathology, School of Medicine, Keio University, Tokyo Keyword: KLF4 , APC , CTNNB1 , KRAS , GNAS pp.1169-1172
Published Date 2025/9/25
DOI https://doi.org/10.11477/mf.053621800600091169
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 Recent genetic analyses have identified distinct mutation profiles among various subtypes of gastric tumors exhibiting gastric-type differentiation. Raspberry-like foveolar-type adenomas consistently harbor a KLF4c.A1322C mutation, whereas flat-type adenomas frequently carry APC and KRAS mutations. These findings suggest that despite sharing foveolar epithelial differentiation, these tumors represent genetically distinct subtypes. Pyloric gland adenomas commonly exhibit concurrent mutations in APC, KRAS, and GNAS. The unique genetic signatures of these tumors support their histological subclassification and provide insights into their histogenesis.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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