Autism risk linked to common gene variants

July 21, 2014 4:12 PM

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Autism risk linked to common gene variants

Most of the genetic risk for autism appears to come from common gene variants rather than spontaneous gene mutations, according to a new study.

Researchers compared about 3,000 people in Sweden with and without autism and found that about 52 percent of autism was linked to common gene variants and rare inherited variations. Spontaneous genetic mutations accounted for only 2.6 percent of autism risk.

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