More than 800 genes are suspected to be involved in autism, and researchers today attribute 30 percent of cases to known copy number variations (CNV)—large deletions or duplications in the genome—or spontaneous genetic mutations in a protein-coding gene. For the other 70 percent of cases,
the causes remain unknown.
© ISTOCK.COM/MATHISWORKS/NEYRO2008As researchers learn more about the underlying causes of this diverse disorder, they are beginning...
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