New Evidence 2: Mutated gene increases autism, too
Seems to be the day for Autism research: CNN reports that a mutated gene contributes up to 2.5 percent chance of autism:
Dr. Pat Levitt and colleagues at Vanderbilt University in Nashville, Tennessee, studied 743 families in which 1,200 family members were affected by autism spectrum disorders, which range from fully disabling autism to Asperger's syndrome.
They found a single mutation in a gene called MET, which is known to be involved in brain development, regulation of the immune system and repair of the gastrointestinal system. All of these systems can be affected in children with autism.
"This is a vulnerability gene," Levitt said in a telephone interview. "There are not genes that actually cause autism. It raises the risk."
People with two copies of the mutated gene have 2 to 2.5 times the normal risk of autism and people with one mutated copy have 1.7 times the risk, he said.
