A novel de novo 1.8Â Mb microdeletion of 17q21.33 associated with intellectual disability and dysmorphic features

► We report on a previously unreported de novo 17q21.33 microdeletion, 1.8 Mb in size. ► It is associated with intellectual disability and dysmorphic features. ► CA10, CACNA1G genes may be responsible for intellectual disability. ► Possible candidate gene for prenatal and postnatal growth retardation is CHAD gene.