New Genetic Clues for ADHD
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Chris_WebMD_Staff posted:
Rare DNA Errors in ADHD Kids Linked to Brain-Development Genes Sept. 29, 2010 -- Attention deficit hyperactivity disorder (ADHD) is a brain disorder and not purely a behavioral problem, say the first researchers to identify rare genetic errors in ADHD kids.People with ADHD have an unusually large number of "copy number variants" or CNVs -- chunks of DNA that are either missing or duplicated, says study researcher Anita Thapar, MD, professor of child and adolescent psychiatry at Cardiff University in Wales.
"These missing or duplicated chunks of DNA are in the areas of the chromosome that overlap with those implicated in autism and schizophrenia , [which are> established brain disorders," Thapar said at a news conference. "And we found that the most significant excess of these copy number variants was in a specific region ... that includes genes for brain development."

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