3q29 microdeletion syndrome

3q29 microdeletion syndrome is a rare chromosome disorder. Symptoms may include delay reaching some developmental milestones such as sitting, walking or talking, frequent ear and respiratory infections, and a small head size (microcephaly). Some babies with this condition are born with a cleft lip or cleft palate, and a few have been reported to have heart defects. As children with this condition get older, they may develop behavioral difficulties such as autism, and they may have symptoms of mental illness.[1] The severity of symptoms can vary, and some people with 3q29 microdeletion syndrome may have very mild symptoms or may not even know they are affected.[2]