Control 10.00 ± 1.78, n = 10; HF NT-proBNP < 500 pg/mL 7.36 ± 2.93, n = 14; HF NT-proBNP ≥500 pg/mL 4.00 ± 1.76, n = 10). The gene discussed is NPPB; the disease is hydrops fetalis.