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Zi-Di Xu, Wei Zhang, Min Liu, Huan-Min Wang, Pei-Pei Hui, Xue-Jun Liang, Jie Yan, Yu-Jun Wu, Yan-Mei Sang, Cheng Zhu and Gui-Chen Ni

This study aims to summarize and analyze the clinical manifestations, genetic characteristics, treatment modalities and long-term prognosis of congenital hyperinsulinemia (CHI) in Chinese children. Sixty children with CHI, who were treated at Beijing Children’s Hospital from January 2014 to August 2017, and their families, were selected as subjects. The CHI-related causative genes in children were sequenced and analyzed using second-generation sequencing technology. Furthermore, the genetic pathogenesis and clinical characteristics of Chinese children with CHI were explored. Among the 60 CHI children, 27 children (27/60, 45%) carried known CHI-related gene mutations: 16 children (26.7%) carried ABCC8 gene mutations, seven children (11.7%) carried GLUD1 gene mutations, one child carried GCK gene mutations, two children carried HNF4α gene mutations and one child carried HADH gene mutations. In these 60 patients, eight patients underwent 18F-L-DOPA PET scan for the pancreas, and five children were found to be focal type. The treatment of diazoxide was ineffective in these five patients, and hypoglycemia could be controlled after receiving partial pancreatectomy. In conclusion, ABCC8 gene mutation is the most common cause of CHI in Chinese children. The early genetic analysis of children’s families has an important guiding significance for treatment planning and prognosis assessment.

Open access

Xiang Hu, Qiao Zhang, Tianshu Zeng, Jiao-Yue Zhang, Jie Min, Sheng-Hua Tian, Han-Tao Huang, Miaomiao Peng, Nan Zhang, Meng-Jiao Li, Qing Wan, Fei Xiao, Yan Chen, Chaodong Wu and Lu-Lu Chen

Screening for (pre)diabetes is recommended in China using fasting blood glucose as routine strategy currently but not oral glucose tolerance test (OGTT) in high-risk population. We aimed to explore the impact by not performing an OGTT in Han Chinese over 40 years. 6682 participants were included in the prospective cohort study followed up for 3 years. Fasting plasma glucose (FPG), 2-h post-load plasma glucose (2h-PG), FPG and 2h-PG (in OGTT), and HbA1c testing using WHO or ADA Criteria were employed for strategy analysis. The prevalence of diabetes is 12.4% (95% CI: 11.6-13.3), while the prevalence of prediabetes is 34.1% (95% CI: 32.9-35.3) and 56.5% (95% CI: 55.2-57.8) using WHO and ADA Criteria respectively. 2h-PG determined more diabetes individuals than FPG and HbA1c. The testing cost per true positive case of OGTT is close to FPG and less than 2h-PG or HbA1c. FPG, 2h-PG and HbA1c strategies would increase costs from complications for FP or FN results compared with OGTT. Moreover, the least individuals identified as normal by OGTT at baseline developed (pre)diabetes, and the most prediabetes individuals identified by HbA1c or FPG using ADA criteria developed diabetes. We concluded that the prevalence of isolated IGT and isolated 2h post-load diabetes were high and the majority of individuals with (pre)diabetes were undetected in Chinese Han population. Additionally, not performing an OGTT results in underdiagnosis, inadequate developing risk assessment and probable cost increases of (pre)diabetes in Han Chinese over 40 years and great consideration should be given to OGTT in detecting (pre)diabetes in this population. Further population-based prospective cohort study of longer-term effects is necessary to investigate the risk assessment and cost of (pre)diabetes.