The authors of a major study published in Nature admitted that even the most common genetic factors brought to light in their research were found in less than 1 percent of the children in their sample. “Most individuals with autism are probably genetically quite unique,” said Stephen Scherer of the Hospital for Sick Children in Toronto. UCLA neurogeneticist Stanley Nelson added, “If you had 100 kids with autism, you could have 100 different genetic causes.” A wry saying popular in the autistic community, “If you meet one person with autism, you’ve met one person with autism,” turns out to be
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