Genetic mutation behind ‘life-threatening’ hypoglycaemia
London: Researchers have revealed that the cause of a rare and severe form of hypoglycaemia - or very low levels of sugar in the blood - is genetic.
The life-threatening condition means the body does not have enough energy to function.
And scientists at the University of Cambridge blame mutations in the AKT2 gene for the condition.
Hypoglycaemia can be caused by a disruption in the balance between the hormone insulin and sugar. Insulin lowers the level of sugar in the blood.
The condition is commonly associated with Type 1 diabetes, when the patients inject too much insulin, miss a meal or drink alcohol.
However, one-in-100,000 babies are born with a genetic defect which means they develop hypoglycaemia even when there is no insulin in the blood. In theory they should have very high blood sugar levels.
The scientists analysed the genetic code of three children with the condition. All had a mutation in the AKT2 gene.
AKT2 acts as an interpreter for the hormone insulin. With the mutation, the interpreter acts as though insulin is always present, lowering blood sugar levels.
Writing in the journal Science, they revealed there are already cancer drugs, which target a similar process.
Lead researcher Prof Stephen O`Rahilly told the BBC that cancer drugs were available which targeted AKT1 and which also act against AKT2.
“There are actual pills that can be swallowed by humans, there could be a treatment in a year,” he stated.
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