By "scanning the largest collection of families with multiple cases of autism ever assembled," scientists say they have found new autism genes -- a region of chromosome 11 and a specific gene called neurexin 1 -- as described in the latest issue of Nature Genetics.
"We hope that these exciting results may represent a step on the way to further new treatments in the future."
Professor John Burn, of the Institute of Human Genetics at Newcastle University, said the news was fantastic.
But he cautioned: "There will almost certainly be an interaction between several genes so this one discovery doesn't provide a complete answer and may not lead straight to a genetic test but it could be a key step in development for effective treatments as it provides a target for drug development."
Dr Fred Kavalier of the British Society for Human Genetics said a cure for autism was still a long way off.
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