In the total HF population, multivariate logistic regression model (included all variables associated with in-hospital death on univariate analysis) revealed as significant independent predictors of mortality at admission the following: age > 80 years, PTH > 6.8 pmol/L, urea > 7.5 mmol/L and GGT/Albumin ≥ 7.0; this model yielded AUC of 0.725 (95% CI 0.663–0.788). The gene discussed is PTH; the disease is hydrops fetalis.