17q23.1q23.2 Microdeletion Syndrome

17q23.1q23.2 microdeletion syndrome is a condition caused by a small deletion of genetic material from chromosome 17. The deletion occurs at a location encompassing bands 23.1 to 23.2 on the long (q) arm of the chromosome. People with 17q23.1q23.2 microdeletion syndrome may have developmental delay, microcephaly, short stature, heart defects and limb abnormalities. Most cases are approximately 2.2 Mb in size and include the transcription factor genes TBX2 and TBX4 which have been implicated in a number of developmental pathways, including those of the heart and limbs.