NRXN1 and autism spectrum disorder: As examples, we find that deletions in NRXN1, a CNV so far known to increase risk for schizophrenia and autism spectrum disorders [20–22], are associated with a plethora of adverse changes, producing 11 significant results, such as increased weight, BMI, waist/hip ratio, fat percentage in arms, legs and trunk, and a faster pulse rate.