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Familial Clustering of Gastric Cancer: A Retrospective Study Based on the Number of First-Degree Relatives.


ABSTRACT: This comprehensive cross-sectional study aimed to identify factors contributing to familial aggregation of gastric cancer (GC). A total of 1058 GC patients and 1268 controls were analyzed separately according to the presence or absence of a first-degree relative of GC (GC-relative). Logistic regression analysis adjusted for age, gender, residence during childhood, smoking, alcohol intake, monthly income, spicy food ingestion, Helicobacter pylori status and host cytokine polymorphisms was performed. Cytotoxin-associated gene A (cagA) positivity was a distinctive risk factor for GC in the family history (FH)-positive group (odds ratio [OR], 2.39; 95% confidence interval [CI], 1.42-4.00), while current/ex-smoker, moderate to strong spicy food ingestion, and non-B blood types were more closely associated with GC in the FH-negative group. Among the FH-positive group, alcohol consumption showed a synergistic carcinogenic effect in the at least 2 GC-relatives group compared to the 1 GC-relative group (1.71 vs. 9.58, P for interaction?=?0.026), and this was dose-dependent. In the subjects with ?2 GC-relatives, TGFB1-509T/T was a risk factor for GC (OR 23.74; 95% CI 1.37-410.91), as were rural residency in childhood, alcohol consumption, spicy food ingestion, and cagA positivity. These results suggest that subjects with FH may be a heterogeneous group in terms of gastric cancer susceptibility. Especially, subjects with ?2 GC-relatives should undergo risk stratification including TGFB1-509T/T and alcohol consumption.

SUBMITTER: Choi YJ 

PROVIDER: S-EPMC4902404 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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Familial Clustering of Gastric Cancer: A Retrospective Study Based on the Number of First-Degree Relatives.

Choi Yoon Jin YJ   Kim Nayoung N   Jang Woncheol W   Seo Bochang B   Oh Sooyeon S   Shin Cheol Min CM   Lee Dong Ho DH   Jung Hyun Chae HC  

Medicine 20160501 20


This comprehensive cross-sectional study aimed to identify factors contributing to familial aggregation of gastric cancer (GC). A total of 1058 GC patients and 1268 controls were analyzed separately according to the presence or absence of a first-degree relative of GC (GC-relative). Logistic regression analysis adjusted for age, gender, residence during childhood, smoking, alcohol intake, monthly income, spicy food ingestion, Helicobacter pylori status and host cytokine polymorphisms was perform  ...[more]

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