Clinical correlation between brain natriutetic peptide and anthracyclin-induced cardiac toxicity

Anthracycline can effectively treat hematologic malignancies, but has significant risk of cardiotoxicity. We measured the clinical correlation between brain natriuretic peptide (BNP) and anthracycline-induced cardiotoxicity. Between March 2005 and March 2007, 86 patients with acute leukemia, malignant lymphoma, or multiple myeloma receiving systemic chemotherapy with anthracycline were enrolled in the Department of Hemato-oncology, Kosin University Gospel Hospital. We investigated the relationship between BNP level and cardiotoxicity through echocardiography, electrocardiography, BNP levels, and symptoms of heart failure at each chemotherapy cycle. Of the 86 participants (mean age, 48.5 years; range 20 approximately 65 years), cardiotoxicity developed in 21 patients (24.4%), with 2 patients showing arrhythmia only, 17 patients with transient aspects of heart failure, and 2 patients with chronic heart failure. Cardiotoxicity related to serum BNP level, age, cumulative dose of anthracycline, accompanying chronic disease, and elevated level of troponin-I. Heart failure was more common if BNP levels reached 100 pg/ml at least once. The clinical correlation between BNP and cardiotoxicity was significant in patients with systemic anthracycline chemotherapy. A prospective clinical trial will be needed to identify the causal relationship between serum BNP level and cardiotoxicity.