New study links regions of chromosomes 7 and 21 to regressive autism (extract)

From Volume 3 Number 11

CINCINNATI, USA: A new Cincinnati Children's Hospital Medical Center study has linked regions of two chromosomes to susceptibility for a type of autism characterised by regression in development. Developmental regression can include the loss of previously acquired language, social skills, or both.
         Moreover, the study is the first to identify the involvement of chromosome 21 in this type of autism. This may explain the increased prevalence of autism spectrum disorders (ASD) among children with Down's syndrome, who have an extra copy of chromosome 21 and are 10 times more likely to have an autistic spectrum disorder than the general population
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