Background In China, lung cancer is also the most commonly diagnosed cancer with a lower 5‐year survival rate, leading to high social burdens. Recently, many studies highlighted the importance of inflammation in the initiation and progression of cancer. The goal of this study was to investigate the association between interleukin‐4 (IL‐4, OMIM#147780) single nucleotide polymorphisms (SNPs) and lung cancer susceptibility. Methods A case‐control study was conducted in a Chinese population including 199 male patients with lung cancer and 266 healthy men. Six SNPs selected from the HapMap database were genotyped using Agena MassARRAY. Genetic models and haplotype analyses were utilized to evaluate the association between SNPs and lung cancer risk. Results In our findings, rs2243250 was associated with a decreased lung cancer risk under the log‐additive model (odds ratio, OR = 0.71, 95% confidence interval, CI = 0.51–0.97, p = 0.030), and the G/G genotype of rs2227284 conferred a negative effect; the risk of lung cancer under the codominant (OR = 0.19, 95% CI = 0.04–0.87, p = 0.040) and recessive models (OR = 0.20, 95% CI = 0.04–0.88, p = 0.012) after adjusted by age. Conclusions These data indicated potential associations between IL‐4 polymorphisms and lung cancer susceptibility. That may help to improve the understanding of the relationship between inflammation and lung cancer in the future.
Background Ankylosing spondylitis (AS) is a type of chronic progressive inflammatory disease, which often causes significant damage to the patients on the physical function, labour ability and quality of life. The study found that the enzyme system tissue inhibitor of matrix metalloproteinases (TIMPs) was important for the development of AS. The aim of this study was to investigate the association of polymorphisms of TIMP3 gene with AS in Chinese Han population. Methods To evaluate the correlation of TIMP3 polymorphisms with AS risk, Agena MassARRAY was used to determine the genotypes of 268 AS patients and 654 controls. The correlation between TIMP3 variants and AS risk was examined by unconditional logistic regression analysis. Haplotype construction and analysis in TIMP3 were also applied to detect the potential association. Results We identified that rs11547635 in the TIMP3 gene (odds ratio[OR] = 0.79, 95% confidence intervals [CI]: 0.63–0.98, p = .029) was significantly associated with a decreased risk of AS in the alleles model. Rs715572 AG genotype (OR = 1.57, 95% CI: 1.05–2.34, p = .041) was potentially associated with an increased risk of AS, and also rs715572 in the dominant model (OR = 1.61, 95% CI: 1.10–2.36, p = .013) and log‐additive model (OR = 1.41, 95% CI: 1.07–1.86, p = .016) adjusted by age and gender were significantly correlated with an increased AS risk. Conclusion These findings suggested that polymorphisms of the TIMP3 gene may be associated with susceptibility to AS.
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