<s>[INST] <<SYS>> This is a medical question of type : inheritance <</SYS>> Is 17q23.1q23.2 microdeletion syndrome inherited ? [/INST] Is 17q23.2q23.2 microdeletion syndrome inherited? Parental FISH testing in most of the reported cases confirmed a de novo origin, meaning that the deletion was new to the family. </s>