PMID- 36068963 OWN - NLM STAT- MEDLINE DCOM- 20221018 LR - 20230110 IS - 1399-5448 (Electronic) IS - 1399-543X (Print) IS - 1399-543X (Linking) VI - 23 IP - 7 DP - 2022 Nov TI - Pancreatic beta-cell function dynamics in youth with GCK, HNF1A, and KCNJ11 genes mutations during mixed meal tolerance test. PG - 1009-1016 LID - 10.1111/pedi.13404 [doi] AB - OBJECTIVE: The aims were (1) to assess beta-cell function in GCK diabetes patients over 2-year period; (2) to evaluate the dynamics of beta-cell function in HNF1A and KCNJ11 patients after treatment optimization; using mixed meal tolerance test (MMTT) as a gold standard for non-invasive beta-cell function assessment. RESEARCH DESIGN AND METHODS: Twenty-two GCK diabetes patients, 22 healthy subjects, 4 patients with HNF1A and 2 with KCNJ11 were recruited. Firstly, beta-cell function was compared between GCK patients versus controls; the dynamics of beta-cell function were assessed in GCK patients with two MMTTs in 2-year period. Secondly, the change of beta-cell function was evaluated in HNF1A and KCNJ11 patients after successful treatment optimization in 2-year period. RESULTS: GCK diabetes patients had lower area under the curve (AUC) of C-peptide (CP), average CP and peak CP compared to controls. Also, higher levels of fasting, average, peak and AUC of glycemia during MMTT were found in GCK patients compared to healthy controls. No significant changes in either CP or glycemia dynamics were observed in GCK diabetes group comparing 1st and 2nd MMTTs. Patients with HNF1A and KCNJ11 diabetes had significantly improved diabetes control 2 years after the treatment was optimized (HbA1c 7.1% vs. 5.9% [54 mmol/mol vs. 41 mmol/mol], respectively, p = 0.028). Higher peak CP and lower HbA1c were found during 2nd MMTT in patients with targeted treatment compared to the 1st MMTT before the treatment change. CONCLUSION: In short-term perspective, GCK diabetes group revealed no deterioration of beta-cell function. Individualized treatment in monogenic diabetes showed improved beta-cell function. CI - (c) 2022 The Authors. Pediatric Diabetes published by John Wiley & Sons Ltd. FAU - Stankute, Ingrida AU - Stankute I AD - Institute of Endocrinology, Lithuanian University of Health Sciences, Kaunas, Lithuania. AD - Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania. FAU - Dobrovolskiene, Rimante AU - Dobrovolskiene R AD - Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania. FAU - Danyte, Evalda AU - Danyte E AD - Institute of Endocrinology, Lithuanian University of Health Sciences, Kaunas, Lithuania. FAU - Steponaviciute, Rasa AU - Steponaviciute R AD - Department of Laboratory Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania. FAU - Schwitzgebel, Valerie M AU - Schwitzgebel VM AUID- ORCID: 0000-0002-8015-950X AD - Pediatric Endocrine and Diabetes Unit, Department of Pediatrics, Gynecology and Obstetrics, University Hospitals of Geneva, Geneva, Switzerland. AD - Diabetes Center of the Faculty of Medicine, University of Geneva, Geneva, Switzerland. FAU - Verkauskiene, Rasa AU - Verkauskiene R AD - Institute of Endocrinology, Lithuanian University of Health Sciences, Kaunas, Lithuania. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220906 PL - Denmark TA - Pediatr Diabetes JT - Pediatric diabetes JID - 100939345 RN - 0 (Blood Glucose) RN - 0 (C-Peptide) RN - 0 (Glycated Hemoglobin A) RN - 0 (HNF1A protein, human) RN - 0 (Hepatocyte Nuclear Factor 1-alpha) SB - IM MH - Adolescent MH - Blood Glucose MH - C-Peptide MH - *Diabetes Mellitus, Type 2/genetics MH - Glycated Hemoglobin MH - Hepatocyte Nuclear Factor 1-alpha/genetics MH - Humans MH - Mutation PMC - PMC9826376 OTO - NOTNLM OT - C-peptide OT - beta-cell function OT - mixed meal tolerance test OT - monogenic diabetes OT - targeted treatment COIS- The authors declare that they have no conflict of interest. EDAT- 2022/09/08 06:00 MHDA- 2022/10/19 06:00 PMCR- 2023/01/08 CRDT- 2022/09/07 02:51 PHST- 2022/06/21 00:00 [revised] PHST- 2022/03/01 00:00 [received] PHST- 2022/08/14 00:00 [accepted] PHST- 2022/09/08 06:00 [pubmed] PHST- 2022/10/19 06:00 [medline] PHST- 2022/09/07 02:51 [entrez] PHST- 2023/01/08 00:00 [pmc-release] AID - PEDI13404 [pii] AID - 10.1111/pedi.13404 [doi] PST - ppublish SO - Pediatr Diabetes. 2022 Nov;23(7):1009-1016. doi: 10.1111/pedi.13404. Epub 2022 Sep 6.