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Cancer Res Treat. 2002 Jun;34(3):205-211. Korean. Original Article.
Kim SU , Lee KM , Park SK , Yoo KY , Noh DY , Choe KJ , Ahn SH , Kang D .
Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea. dhkang@snu.ac.kr
Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.
Department of Preventive Medicine, Konkuk University College of Medicine, Chungju, Korea.
Department of Surgery, Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea.
Abstract

PURPOSE: To evaluate the potential association between the GSTP1 genotype and the development of breast cancer, a hospital based case-control study was conducted in South Korea. MATERIALS AND METGODS: The study population consisted of 171 histologically confirmed incidents of breast cancer cases, and 171 age-matched controls with no present, or previous, history of cancer. A PCR method was used for the genotyping analyses, and statistical evaluation was performed by an unconditional logistic regression model. RESULTS: No association was observed in the study subjects, or the premenopausal women group with GSTP1 Val allele. However, postmenopausal women with GSTP1 Val allele had a reduced risk of breast cancer (OR=0.3, 95% CI=0.1~0.7). When the data were stratified, by the known risk factors of breast cancer, a significant interaction was observed between the GSTP1 genotype and alcohol consumption (p for interaction = 0.01); women with GSTP1 Val allele, that drank regularly, had a 3.0-fold increased risk of breast cancer (95% CI=1.1~7.9), whereas women with GSTP1 Val allele, that never drink, had protective effects (OR=0.4, 95% CI=0.2~0.8). CONCLUSION: Our findings suggest that GSTP1 Ile105Val polymorphism influences the individual susceptibility to breast cancer, and that this effect may be modified by alcohol consumption.

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