Importantly, a previous studysuggested that pro-BNP serum biomarkers and troponin are able to substitute theimportance of Doppler echocardiographic data in the prediction of SCD.16 However, the analysed populationdiffered from that of the present study because it constituted exclusively ofpatients on peritoneal dialysis and with smaller mean left ventricularmass.16 The dosage of suchbiomarkers was not done in our sample. This evidence concerns the gene NPPB and Schnyder corneal dystrophy.