Recovery from left ventricular dysfunction was associated with the early introduction of heart failure medical treatment in cancer patients with anthracycline-induced cardiotoxicity

BackgroundLeft ventricular (LV) dysfunction due to anthracycline-induced cardiotoxicity (AIC) has been believed to be irreversible. However, this has not been confirmed and standard medical treatment for heart failure (HF) including renin-angiotensin inhibitors and -blockers may lead to its recovery.Methods and resultsWe thus retrospectively studied 350 cancer patients receiving anthracycline-based chemotherapy from 2001 to 2015 in our institution. Fifty-two patients (14.9%) developed AIC with a decrease in LV ejection fraction (LVEF) of 24.1% at a median time of 6months [interquartile range (IQR) 4-22months] after anthracycline therapy. By multivariate analysis, AIC was independently associated with cardiac comorbidities including ischemic heart disease, valvular heart disease, arrhythmia, and cardiomyopathy [odds ratio (OR) 6.00; 95% confidence interval (CI) 2.27-15.84, P=0.00044), lower baseline LVEF (OR per 1% 1.09; 95% CI 1.04-1.14, P=0.00034). During the median follow-up of 3.2 years, LV systolic dysfunction recovered among 33 patients (67.3%) with a median time of 4months (IQR 2-6months), which was independently associated with the introduction of standard medical treatment for HF (OR 9.39; 95% CI 2.27-52.9, P=0.0014) by multivariate analysis.ConclusionEarly initiation of standard medical treatment for HF may lead to LV functional recovery in AIC.