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Jian Xue,Zefei Jiang,Fan Qi,Shuanghong Lv,Shaohua Zhang,Tao Wang,Xiaozhong Zhang 한국유방암학회 2014 Journal of breast cancer Vol.17 No.4
Purpose: In the present study, we investigated the incidence ofcardiotoxicity within 5 years of trastuzumab treatment and evaluatedpotential risk factors in clinical practice. Methods: The studycohort included 415 patients diagnosed with early breast cancer(EBC). Cardiotoxicity incidence was evaluated in patients receivingtrastuzumab and those who did not. Multivariate Cox proportionalhazards regression models were used to estimate hazardratios and 95% confidence intervals of potential risk factorsfor trastuzumab-related cardiotoxicity after appropriate adjustments. Results: Incidence of cardiotoxicity in patients treatedwith trastuzumab was significantly higher than that in controls(23.7% vs. 10.8%, p<0.001). This result was adjusted for factorsthat might increase the risk of cardiotoxicity, such as historyof coronary artery diseases or the use of anthracyclines for morethan four cycles. Conclusion: Our findings indicated that treatmentwith trastuzumab was strongly associated with cardiotoxicityin EBC patients.