Plasma and epicardial CA125 showed a positive weak correlation (rho 0.205; p = 0.011), which was not modified by the HF status (rho 0.193; p = 0.069 in patients with a prior diagnosis of HF vs. rho 0.147; p = 0.254 in those without the diagnosis of HF). This evidence concerns the gene MUC16 and hydrops fetalis.