INS and prediabetes syndrome: Seven months after starting GH therapy, the repeated oral glucose tolerance test showed borderline diabetes with impaired insulin secretion [insulinogenic index: 0.09 (reference: 1.34 ± 0.66)] without insulin resistance [Homeostasis Model Assessment insulin Resistance (HOMA-R): 0.2 (reference: < 1.6)] (Supplementary Table 3).