MON-LB56 Metabolic Profile in 107 Patients With Childhood Onset Growth Hormone Deficiency (CO-GHD) at the Time of Transition From Pediatric to Adulthood Endocrine Care

Vulnerability of the transitional period from childhood to adulthood is particularly challenging in treatment of adolescents with CO-GHD. Altered metabolic profile is well described in GHD, but relevant large monocentric studies in transition patients and young adults with CO-GHD are lacking.Patients and Methods: In a monocentric, observational, retrospective cross-sectional study conducted from 2005-2019, 107 CO-GHD patients were analyzed (17-26 years old, 80 males) at the time of transfer from pediatric to adult endocrine care. Median age at transfer was 19.6 ± 2.2 years. Subjects with congenital and idiopathic GHD (CON) were compared with age-, sex- and BMI-matched patients with hypothalamic/pituitary tumor history (TUM). Glycaemia and insulin during OGTT (peak and AUC), HbA1c, serum total cholesterol, HDL, LDL and triglycerides were analyzed in all patients.Results: Congenital and idiopathic causes of CO-GHD were more frequent than hypothalamic/pituitary tumoral causes (74.8% vs. 25.2%). All patients received GH replacement during childhood for average duration of 5.4 ± 1.4yrs. GH replacement was discontinued prior to transfer for 2.7 ± 0.9yrs. Glycaemia peak, glycaemia AUC and insulin peak in OGTT were not significantly different in TUM vs. CON (p>0.05). However, insulin AUC in OGTT was significantly higher in TUM compared to CON (134.38 ± 23.2 vs 114.62 ± 12.4; p<0.05). HbA1c was similar between the two groups (5.2 ± 0.4% TUM vs 5.0 ± 0.3% CON; p>0.05). Total cholesterol (5.2 ±1.1 vs 4.5 ± 0.8 mmol/l; p>0.05), LDL (3.1 ± 0.9 vs 2.7 ± 0.8 mmol/l; p>0.05) and triglycerides (2.1 ± 1.1 vs 1.1 ± 0,7 mmol/l; p<0.05) were increased in TUM compared to CON, while HDL was decreased in TUM group (1.0±0.1 vs 1.4±0,3 mmol/l; p<0.05).Conclusion: Patients with CO-GHD caused by hypothalamic/pituitary tumors are burdened with a worse metabolic profile at the time of childhood to adulthood transition compared to matched transition patients with congenital CO-GHD.