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Hereditas(Beijing) ›› 2022, Vol. 44 ›› Issue (11): 1056-1062.doi: 10.16288/j.yczz.22-226

• Genetic Resource • Previous Articles     Next Articles

Diagnosis, treatment and genetic analysis of two cases of congenital hyperinsulinemic hypoglycemia caused by GCK gene mutation

Ruizhi Jiajue(), Cheng Xiao(), Yiwen Liu, Ran Li, Huabing Zhang, Miao Yu()   

  1. Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
  • Received:2022-06-30 Revised:2022-09-06 Online:2022-11-20 Published:2022-09-29
  • Contact: Yu Miao E-mail:jjrz@pumch.cn;jz_xiaocheng@163.com;yumiaoxh@163.com
  • Supported by:
    the National Natural Science Foundation of China(82170855);the National Key Research and Development Program(2020YFC2004505);the National Key Research and Development Program(2018YFC2001105)

Abstract:

Congenital hyperinsulinemia (CHI) is a heterogeneous disorder characterized by persistent hypoglycemia due to inappropriate insulin secretion. A total of 15 gene mutations have already been reported to be associated with CHI. Among them, CHI caused by the GCK mutation is named GCK-CHI, which is considered to be a rare form of CHI. Here, we reported two cases of GCK-CHI diagnosed by genetic testing and summarized the clinical characteristics. In patients with recurrent or persistent hypoglycemia, CHI should be taken into consideration. Genetic testing should be perfomed in these patients to avoid misdiagnosis and provide accurate intervention, thus to improve prognosis.

Key words: congenital hyperinsulinemic, hypoglycemia, GCK gene mutation