FGF21 and hydrops fetalis: Elevated serum FGF21 levels were significantly correlated with elevated eGFR (ρ = 0.35, p = 0.0125) and triglycerides (ρ = 0.28, p = 0.0465) and decreased serum levels of HDL cholesterol (ρ = −0.29, p = 0.0386) and values of RV-RA gradient (ρ = −0.30, p = 0.0358) in patients with advanced HF.