CD40 and hydrops fetalis: Conversely, 6 inflammatory factors showed protective effects against HF: CD40L receptor (OR = 0.954, 95% CI: 0.912–0.998, P = .040), Delta and Notch-like epidermal growth factor-related receptor (OR = 0.943, 95% CI: 0.899–0.990, P = .019), interleukin-10 (OR = 0.950, 95% CI: 0.908–0.993, P = .024), leukemia inhibitory factor receptor (OR = 0.911, 95% CI: 0.860–0.966, P = .002), tumor necrosis factor ligand superfamily member 12 (OR = 0.933, 95% CI: 0.881–0.987, P = .016), and urokinase-type plasminogen activator (OR = 0.927, 95% CI: 0.882–0.975, P = .003).