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  • Title: CD40 -1C>T polymorphism and the risk of lung cancer in a Chinese population.
    Author: Zhou G, Wang Y, Fang Z, Liu R, Wang A, Zhao F, Chen L.
    Journal: Int J Clin Exp Pathol; 2015; 8(11):15163-9. PubMed ID: 26823861.
    Abstract:
    BACKGROUND: The co-stimulatory molecule CD40 plays an important role in anti-tumor responses by promoting cytotoxic T lymphocyte (CTL) activity and differentiation of helper T cells. Growing evidence suggests that single nucleotide polymorphisms (SNPs) in CD40 are associated with the susceptibility to cancer. This study investigated the association between the CD40 -1C/T SNP (rs1883832) and lung cancer in a Chinese population. METHODS: We conducted a hospital-based case-control study including 105 lung cancer patients and 109 healthy control subjects. The -1C/T SNP in CD40 was genotyped by the polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP), and its association with lung cancer susceptibility was evaluated. RESULTS: The distribution of the genotypes of CD40-1C/T was significantly different between lung cancer patients and controls. The frequency of the TT genotype (adjusted P = 0.017; overall risk [OR] = 2.94; 95% confidence interval [CI] = 1.21-7.13) and TT/CT genotype (adjusted P = 0.020; OR = 1.95; 95% CI = 1.11-3.43) were significantly higher in lung cancer patients than that in controls. When the cases were categorized by tumor histology, the TT genotype was associated with a significantly increased risk of squamous cell carcinoma (adjusted OR = 6.53; 95% CI = 1.97-21.61; P = 0.002). CONCLUSION: Our findings suggest that the CD40 -1C/T SNP (rs1883832) is correlated with the susceptibility to lung cancer in Chinese, and the TT genotype may further increase the risk of lung cancer.
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