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eISSN: 1643-3750

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Polymorphisms in NFKB1 and NFKBIA Genes Modulate the Risk of Developing Prostate Cancer among Han Chinese

Xiao Han, Jia-jun Zhang, Nan Yao, Gang Wang, Juan Mei, Bo Li, Chao Li, Zi-an Wang

(Internal Medicine-Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China (mainland))

Med Sci Monit 2015; 21:1707-1715

DOI: 10.12659/MSM.893471


BACKGROUND: Nuclear factor kappa B (NF-κB) pathway proteins play an important role in modulating inflammation and other carcinogenic processes. Polymorphisms within NF-κB pathway genes may influence cancer risk. This study aimed to examine the association between NFKB19-4 ATTG ins→del, NFKBIA 3’ UTR A→G, -826CT and -881AG polymorphisms and prostate cancer risk among Chinese.
MATERIAL AND METHODS: The polymorphisms were genotyped via PCR-RFLP technique on 936 prostate cancer patients and 936 population-based healthy controls. Logistic regression model was used to measure the risk association present.
RESULTS: With the exception of NFKBIA 3’ UTR polymorphism, the heterozygous and mutant genotypes of the other polymorphisms were significantly associated with prostate cancer risk. For NFKB1 polymorphism, a decreased risk was observed, with adjusted OR: 0.69; 95% CI: 0.44, 0.98; P=0.01 (heterozygous) and adjusted OR: 0.60; 95% CI: 0.37, 0.91; P=0.02 (mutant). NFKBIA -826CT and -881AG polymorphisms were in complete linkage disequilibrium and shared the same risk association, with adjusted OR: 1.34; 95% CI: 1.09, 1.62; P=0.02 (heterozygous) and adjusted OR: 2.83; 95% CI: 1.79, 4.50; P=0.01 (mutants). Interestingly, the impact of the NFKB1 polymorphism was not present in nonsmokers and younger (<60 years) subjects (P<0.05).
CONCLUSIONS: In conclusion, polymorphisms in NFKB1 and NFKBIA genes may modulate the risk of developing prostate cancer among Chinese.

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