Diagnosis

A diagnosis of DiGeorge syndrome (22q11.2 deletion syndrome) is based primarily on a lab test that can detect the deletion in chromosome 22. Your doctor will likely order this test if your child has:

  • A combination of medical problems or conditions suggesting 22q11.2 deletion syndrome
  • A heart defect, because certain heart defects are commonly associated with 22q11.2 deletion syndrome

In some cases, a child may have a combination of conditions that suggest 22q11.2 deletion syndrome, but the lab test doesn't indicate a deletion in chromosome 22. Although these cases present a diagnostic challenge, the coordination of care to address all of the medical, developmental or behavioral problems will likely be similar.

July 18, 2017
References
  1. National Library of Medicine. 22q11.2 deletion syndrome. Genetics Home Reference. https://ghr.nlm.nih.gov/condition/22q112-deletion-syndrome#genes. Accessed May 25, 2017.
  2. 22q11.2 deletion disorders (DiGeorge syndrome and velocardiofacial syndrome). American Heart Association. http://www.heart.org/HEARTORG/Conditions/CongenitalHeartDefects/AboutCongenitalHeartDefects/22q112-Deletion-Disorders-DiGeorge-Syndrome-and-Velocardiofacial-Syndrome_UCM_309017_Article.jsp#.WSc5wWd1rRE. Accessed May 25, 2017.
  3. DiGeorge syndrome (DGS). American Academy of Allergy Asthma & Immunology. http://www.aaaai.org/conditions-and-treatments/primary-immunodeficiency-disease/digeorge-syndrome. Accessed May 25, 2017.
  4. DiGeorge syndrome. Merck Manual Professional Version. https://www.merckmanuals.com/professional/immunology-allergic-disorders/immunodeficiency-disorders/digeorge-syndrome. Accessed May 25, 2017.
  5. Hofstetter AM, et al. Live vaccine use and safety in DiGeorge syndrome. Pediatrics. 2014;133:e946.
  6. Chromosome 22q11.2 deletion syndrome. National Organization for Rare Disorders. https://rarediseases.org/rare-diseases/chromosome-22q11-2-deletion-syndrome/. Accessed May 25, 2017.
  7. Seroogy CM. DiGeorge (22q11.2 deletion) syndrome: Epidemiology and pathogenesis. https://www.uptodate.com/contents/search. Accessed May 25, 2017.
  8. Seroogy CM. DiGeorge (22q11.2 deletion) syndrome: Clinical features and diagnosis. https://www.uptodate.com/contents/search. Accessed May 25, 2017.
  9. Seroogy CM. DiGeorge (22q11.2 deletion) syndrome: Management and prognosis. https://www.uptodate.com/contents/search. Accessed May 25, 2017.
  10. AskMayoExpert. 22q11.2 deletion syndrome. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2016. Accessed May 10, 2017.
  11. Babovic-Vuksanovic D (expert opinion). Mayo Clinic, Rochester, Minn. July 6, 2017.