NPPB and heart failure: No significant association between elevated NT-proBNP and DCM was found in the subgroups, i.e., DMD, BMD, asymptomatic or symptomatic carriers (data not shown) When NT-proBNP level was entered as a dichotomous independent variable (elevated or not) into a logistic regression model (adjusted for disease duration, weakness, treatment or complaints suggestive of heart failure) no statistical significant associations could be demonstrated.