Finnish scientists find gene responsible for dyslexia
Finnish scientists say that they have identified the gene responsible for dyslexia. Dyslexia is a common learning disorder, affecting 3 to 15 per cent of the population. The disorder is characterised by an inability to recognise and comprehend written words. While previous studies have been unable to pinpoint the exact cause of the learning disorder, scientists have now suggested that the disorder may be linked to a genetic fault. To support these claims, Juha Kere and colleagues from the University of Helsinki decided to study the genetic background of dyslexia. Finnish families with a reported history of dyslexia were tested for cognitive ability, reading and spelling skills, as well as reading-related neurocognitive skills, in order to confirm the diagnosis. The scientists then carried out chromosomal linkage studies in the families selected, leading to the identification of the DYXC1 gene as the possible cause for dyslexia. Although unable to explain the role of DYXC1, the scientists involved in the study believe that the gene may be responsible for controlling stress levels. More certain is the impact that this discovery will have on diagnosing and treating dyslexia early in children.
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