The aim of the present study was to conduct a cross-sectional study to examine the potential correlation between the eQB rate and serum cTnT concentration in patients using different ED modalities and assess whether there is an association between changes in the eQB rate and serum cTnT concentration in a prospective observational study on stable patients treated with HF-HD or low-flux (LF) HD. This evidence concerns the gene TNNT2 and hydrops fetalis.