This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
2q23.1 microdeletion syndrome is a rare chromosome disorder. Symptoms may include seizures, moderate to severe learning problems, speech delays, behavior problems, trouble sleeping, and developmental delays (learn to crawl, sit or walk later than other babies). Children affected by 2q23.1 microdeletion syndrome may also have low muscle tone (hypotonia), slow weight gain, and may be shorter than family members.
2q23.1 deletion syndrome is caused by the loss of a small piece of DNA in one copy of chromosome 2, one of the 23 pairs of chromosomes in each cell in our bodies. Most cases of 2q23.1 deletion syndrome are de novo, which means the deletion was not passed down from either parent.
Diagnosis of 2q23.1 microdeletion syndrome may be suspected by symptoms but is confirmed by genetic testing. Treatment is based on the signs and symptoms of each person and may include seizure medication, speech therapy, behavior therapy, physical, and occupational therapy, and special education programs.
For more information, visit GARD.