Control 1.18 pg/mL ± 0.65, n = 12; HF NT-proBNP < 500 pg/mL 0.92 pg/mL ± 0.47, n = 10; HF NT-proBNP ≥500 pg/mL 2.74 pg/mL ± 1.47, n = 6). This evidence concerns the gene NPPB and hydrops fetalis.