Post-partum hypoglycaemia in a child to a father with HNF4A diabetes

Untreated hypoglycaemia in newborns may result in permanent cognitive damage, why early diagnosis and treatment is important. This case report describes a newborn girl, who developed hypoglycaemia, when she was two hours old despite early feeding. The father of the child had maturity-onset diabetes of the young Type 1, which is caused by an autosomal dominant inherited mutation in the HNF4A gene. Due to this, early blood glucose measurements were performed. The child was treated with extra feeding and recovered without any consequences. A later gene test showed, that the child was carrier of the mutation.