GTF2I and Williams syndrome: The GTF2I gene is commonly deleted in Williams-Beuren syndrome (WBS) (Merla et al, 2010), a neurodevelopmental disorder characterized by craniofacial dysmorphology, intellectual disability, deficits in visuospatial construction, relative strength in concrete language, social disinhibition, and nonsocial anxiety (Mervis and John, 2010).