IGF1 and central precocious puberty: The mean basal IGF1 and IGF1-SDS levels were significantly greater in progressive CPP patients (IGF1 270.15 ng/mL ± 12.567; IGF1-SDS 1.943 ± 0.129) than in both NP-CPP patients (IGF1 174.12 ng/mL ± 9.604; IGF1-SDS 0.788 ± 0.129) and controls (139.28 ng/mL ± 10.465; IGF1-SDS 0.208 ± 0.1995).