期刊
JOURNAL OF THE ROYAL COLLEGE OF PHYSICIANS OF EDINBURGH
卷 51, 期 3, 页码 266-268出版社
SAGE PUBLICATIONS LTD
DOI: 10.4997/JRCPE.2021.312
关键词
diabetes; HNF4A; hyperinsulinaemic hypoglycaemia; MODY
This case highlights a new phenotype of a known mutation, showing that the same mutation in one family can lead to profoundly different manifestations. It also underscores the fact that genetic causes of hyperinsulinaemic hypoglycaemia may present late in life, emphasizing the importance of identifying such cases for establishing the correct treatment.
Mutations in the HNF4A gene are associated with hyperinsulinaemic hypoglycaemia in infants, frequently evolving into relative deficiency of insulin in adulthood as maturity onset diabetes of the young (MODY). A 69-year-old male with a strong family history of adult-onset diabetes was referred with lifelong hypoglycaemia, found to be due to a pathogenic HNF4A mutation. HbA1c levels were low, continuous glucose monitoring demonstrated frequent low glucose events in the early morning, and he was successfully treated with diazoxide. This case represents a new phenotype of a known mutation associated more commonly with MODY. The same mutation in one family led to profoundly different manifestations. Genetic causes of hyperinsulinaemic hypoglycaemia can present late in life and identifying such cases is important to allow the correct treatment to be established.
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