<s>[INST] <<SYS>> This is a medical question of type : exams and tests <</SYS>> How to diagnose 17q23.1q23.2 microdeletion syndrome ? [/INST] How is 17q23.1q23.2 microdeletion syndrome diagnosed? The deletion can be identified by comparative genomic hybridization (CGH) microarray and fluorescence in situ hybridization (FISH). </s>