Según escriben en el "American Journal of Human Genetics", investigadores británicos del Wellcome Trust Centre for Human Genetics y estadounidenses de la Universidad de California, en Los Angeles (UCLA) han identificado una pequeña región del ADB que parece contener un gen implicado en el riesgo de presentar trastorno de hiperactividad y déficit de atención.
La misma región ha sido también relacionada con el autismo, lo que sugiere, en opinión de los autores, que ambos trastorno están genéticamente relacionados.
Se trata de una pequeña porción del cromosoma 16, que parece contribuir a una mayor susceptibilidad del trastorno de hiperactividad. El hallazgo parta del estudio de 203 familias en las que al menos dos hermanos presentaban el trastorno.
Los investigadores opinan que el gen existente en esa región puede ser responsable del 30% del riesgo genético del trastorno de hiperactividad. Según los expertos, el 70-80% de los casos de este trastorno tienen causa genética.
American Journal of Human Genetics 2002;71:959-965
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Wellcome Trust Centre for Human Genetics
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