NPPB and COVID-19–associated multisystem inflammatory syndrome in children: In case of MISC with cardiac involvement, compared to KD, higher levels of markers of cardiac injury, like troponin and NT-proBNP are documented, often with depression of ventricular function [12], valve regurgitation and pericardial effusions [7, 9–11], which are not characteristic of KD [9, 50, 58–60]