In recent years, the measurement of cardiac biomarkers, especially troponin and N‐terminal pro‐B‐type natriuretic peptide (NT‐proBNP), has been proposed as a method to detect early cardiotoxicity, and several studies have shown a relation between raised levels of cardiac biomarkers and left ventricular dysfunction, in particular with a decrease in LVEF, and the development of heart failure.4, 5, 6, 7, 8, 9. Here, NPPB is linked to heart failure.