Well, the descriptions of facial features (broad foreheads, large skulls, wide-set eyes) certainly describes me, and my dad, and my maternal grandfather...
...and all four of my kids (none of whom have an autism diagnosis). The Boy has an ENORMOUS skull and looks more like Daddy with each passing year; however I have become just about convinced that ADHD is the correct diagnosis. All three girls have very broad foreheads and wide-set eyes. And, so far, no clinically significant evidence of autism.
I also got the impression from the article that this particular mutation was linked to some level of intellectual disability...
...which NO ONE in my direct lineage has. To the best of my knowledge, there is Asperger's all over both sides of the family (more common on my mom's side, with my grandfather, my aunt, me, and at least three cousins that I know of being affected; on my dad's side there is him, me, one other cousin, and a lot of people that show some traits but not enough to be clinically significant). There is, however, only one case of profound/classical autism (and I'm guessing at that-- nobody knows exactly how much of T.'s problems are organic and how much of them came from being kept locked away from the world in a back bedroom) and obvious intellectual disability. The rest of us are "dumb smart people," as the saying goes.
As far as gut issues go...
I do note that it seems to take me longer to move food through my system (versus my husband's in-for-breakfast, out-by-lunch colon). But the only issues with constipation I have ever had resulted from either pregnancy (don't ask-- seriously, don't ask) or retaining stool as a child (some day I really must have a long conversation with my grandmother about her methods of potty training).
My oldest child was prone to constipation in her early years, though I link that directly to an abiding love of potato chips and chocolate milk and a deep hatred of water and any form of fresh plant matter. Some of it, however, could be genetic-- even as an infant, I had to water down her formula by about 1 1/2 ounce per 8 ounce bottle or she'd poop little hard pellets about every third day (with nothing in between). Alarming. Breast-fed the other three-- far fewer issues of the diaper kind.
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"Alas, our dried voices when we whisper together are quiet and meaningless, as wind in dry grass, or rats' feet over broken glass in our dry cellar." --TS Eliot, "The Hollow Men"