AUTS2 and microcephaly: Extensive clinical genomic analyses have subsequently identified more than 50 additional patients with AUTS2 mutations, who presented similarly, but with high variability in the severity and combination of phenotypes of not only the autistic features, but also borderline to mild intellectual disabilities (IDs), microcephaly, feeding difficulties, short stature, hypotonia, and cerebral palsy as well as the dysmorphisms in craniofacial features [4,5,6].