Although the cumulative risk curve showed that both high-level pPENK (Figure 5(A)) and uNT-proBNP/uCr ratio (Figure 5(B)) increased the risk of the composite-outcome of HF readmission or all-cause death 90 d after discharge, the difference between the high-level group and the low-level group was not statistically significant (log-rank p > 0.05). This evidence concerns the gene NPPB and hydrops fetalis.