Gene Mutation Linked to Autism in Boys

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2010-09-16 09:54

Why are boys four times more likely to have autism than are girls? We now have another clue, as investigators have discovered a gene mutation that puts boys at high risk of developing autism spectrum disorder (ASD).

Autism in Boys and the PTCHD1 Gene

Many researchers have been searching for reasons why autism affects more boys than girls. In 2007, the National Institutes of Health, along with several other organizations, reported that boys with autism and ASD had higher levels of hormones involved with growth when compared to boys who do not have autism.

In a University of California, Los Angeles, study published in 2009, investigators identified an autism-risk gene called CACNA1G, which is more common in boys than in girls, although why is not clear. CACNA1G is found on chromosome 17 and is responsible for regulating the flow of calcium into and out of cells. It is just one of several genes that have been linked to autism in previous studies, and now a research team has discovered yet another one.

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