STC2 and hydrops fetalis: Further, Stanniocalcin-2 was identified as independent predictor of all-cause mortality (HR 2.23; 95% CI 1.16–4.29; p = 0.017) and readmission due to HF (HR 3.42; 95% CI 1.22–9.60; p = 0.020) (Table 2).