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My son's results came in with a deletion on 22q.11.21 chromosome which I believe somehow is linked to his autism.
Chromosome disorders are an intense interest of mine. Your son's condition is linked to autism and NVLD, as well as ADHD. It's actually a very common microdeletion, but few people have heard of it.
In my case, I got tested by 23andme, but I don't think they found any chromosome disorders. Just a big pile of autism-related SNPs.