1) in mice 2) autism like traits 3) plenty of other cases of “knock out one gene” lead to everything from allergies to neurological problems, to missing limbs

1) in mice 2) autism like traits 3) plenty of other cases of “knock out one gene” lead to everything from allergies to neurological problems, to missing limbs and organs. It should not be surprising that someone could find a gene that caused neurological issues, that look similar to autism when you lack all the methods for distinguishing autism from any other neurological disorder.