Liu Bo, Tang Yang, Yi Minxiao, Liu Qingxu, Xiong Huihua, Hu Guangyuan, Yuan Xianglin
Department of Oncology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
Cancer Med. 2017 Mar;6(3):681-688. doi: 10.1002/cam4.1011. Epub 2017 Feb 17.
Plasminogen activator inhibitor-1 (PAI-1) plays a crucial role in the process of lung injury, although its association with radiation pneumonitis (RP) is unclear. We hypothesized that genetic variants in PAI-1 may influence the risk of RP. In this study, 169 lung cancer patients were genotyped for six single-nucleotide polymorphisms in PAI-1 using the Sequenom MassARRAY system. The risk of RP was evaluated by Cox proportional hazards analyses. The cumulative RP probabilities by genotype were assessed using Kaplan-Meier analyses. Univariate and multivariate analyses revealed that PAI-1:rs7242 GT/GG was correlated with an increased occurrence of grade ≥3 RP (crude hazard ratio = 3.331; 95% confidence interval, 1.168-9.497; P = 0.024). Our results indicated that PAI-1:rs7242 in the 3'-untranslated region of PAI-1 can be a predictor of grade ≥3 RP before radiotherapy.
纤溶酶原激活物抑制剂-1(PAI-1)在肺损伤过程中起关键作用,尽管其与放射性肺炎(RP)的关联尚不清楚。我们推测PAI-1基因变异可能影响RP的风险。在本研究中,使用Sequenom MassARRAY系统对169例肺癌患者的PAI-1基因中的六个单核苷酸多态性进行基因分型。通过Cox比例风险分析评估RP风险。使用Kaplan-Meier分析评估按基因型分类的累积RP概率。单因素和多因素分析显示,PAI-1:rs7242 GT/GG与≥3级RP发生率增加相关(粗风险比 = 3.331;95%置信区间,1.168 - 9.497;P = 0.024)。我们的结果表明,PAI-1 3'非翻译区的PAI-1:rs7242可作为放疗前≥3级RP的预测指标。