Cox regression analysis revealed these significant associations persisted after adjustment for age, sex, pre-existing cardiovascular disease, diabetes, chronic kidney disease, heart rate, systolic blood pressure, and plasma brain natriuretic peptide levels at discharge (all-cause mortality HR = 1.29 (1.00–1.66), p = 0.049; hospitalization for HF HR = 1.36 (1.03–1.81), p = 0.033; hospitalization for non-HF HR = 1.38 (1.03–1.86), p = 0.034; composite outcome HR = 1.33 (1.07–1.64), p = 0.01). The gene discussed is NPPB; the disease is hydrops fetalis.