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Ethnic Differences in Genetic Susceptibility to Gastric Cancer : Allele Flips of Interleukin Gene between Asians and Non-Asians

Authors
 Juwon Kim  ;  Yoonjung Kim  ;  Kyung-A Lee 
Citation
 World Journal of Gastroenterology, Vol.20(16) : 4558-4565, 2014 
Journal Title
 World Journal of Gastroenterology 
ISSN
 1007-9327 
Issue Date
2014
Abstract
Polymorphisms in promoter regions of inflammatory cytokines have been widely studied, and potentially functional polymorphisms have been discovered. Conflicting results from meta-analyses of interleukin (IL)-1B and IL-10 polymorphisms show differences in gastric cancer susceptibilities between Caucasian and Asian populations. In particular, we note the suggestion of an allele flip in IL-1B and IL-10 gene polymorphisms. In Asian populations, the IL-1B-1464G/-511C/-31T haplotype indicates risk for gastric cancer, while the opposite haplotype, IL-1B-1464C/-511T/-31C is the risk-related allele in Caucasians. Furthermore, while IL-10-1082G/-819C/-592C is associated with gastric cancer in Asians, IL-10-1082A/-819T/-592T is linked to gastric cancer risk in Caucasians. These seemingly contradictory results may be attributed to distinct carcinogenic mechanisms underlying the different gastric cancer subtypes. The allele flip observed in IL-10 and gastric cancer appears to reflect allelic heterogeneity, similar to that observed in IL-1B. In this review, we focus on the allele flip phenomenon observed between different ethnic groups in an effort to resolve certain controversial results from recent studies on interleukin polymorphism. In addition, we re-emphasize the importance of stratifying gastric cancer subtypes based on anatomical site and Lauren classification to prevent false associations arising through dilution of true ones.
Files in This Item:
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DOI
10.3748/wjg.v20.i16.4558
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학교실) > 1. Journal Papers
Yonsei Authors
김윤정(Kim, Yoon Jung) ORCID logo https://orcid.org/0000-0002-4370-4265
이경아(Lee, Kyung A) ORCID logo https://orcid.org/0000-0001-5320-6705
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/98663
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