TF and Neurodevelopmental delay: In the NDD group, hepcidin, ferritin, and transferrin saturation (TSAT) were significantly reduced after roxadustat treatment: Hepcidin [SMD = -1.59, 95% CI (-2.69, -0.49), <i>p</i> = 0.005], ferritin [SMD = -0.51, 95% CI (-0.72, 0.3) <i>p</i> < 0.00001], TSAT [SMD = -0.41, 95% CI (-0.62, 0.2), <i>p</i> < 0.0001].