DNM1L and hydrops fetalis: We examined the serum Drp1 concentrations based on various etiologies ofHF and found no significant difference between these groups (Fig. 2B), suggestingthat the serum Drp1 concentrations were mainly dependent on the phenotypes of HF.An ROC curve for serum Drp1 was generated to distinguish HFpEF and HFrEF.