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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Genetic variants in the plasminogen activator inhibitor-1 gene are associated with an increased risk of radiation pneumonitis in lung cancer patients.
Cancer Medicine 2017 March
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.
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