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Condition Article

22q11.2 deletion syndrome

An educational overview of 22q11.2 deletion syndrome, a genetic condition caused by a missing small piece of chromosome 22 that can affect several parts of the body.

Rare DiseasePediatricsInternal MedicineFull article

Also known as: DiGeorge syndrome, velocardiofacial syndrome, 22q11.2 deletion syndrome, 22q11.2DS

Educational information only. This explains health information to discuss with a qualified clinician; it is not a diagnosis, prescription, or treatment. Medical Information & Safety.

Overview

22q11.2 deletion syndrome is a genetic condition caused by a missing small piece of one chromosome. It can affect the heart, immune system, and development in varying ways. This is general educational information, not medical advice.

Symptoms

  • heart differences present from birth in some
  • frequent infections
  • developmental and learning differences
  • feeding or speech difficulties

Causes

  • a missing small segment of chromosome 22, usually occurring by chance

Risk factors

  • usually not inherited, though it can be passed on in some families

Prevention

  • no prevention; genetic counselling can provide information for families

Emergency warning signs

  • serious breathing or heart symptoms require emergency care
  • signs of serious infection

Evaluation & tests

Educational note: clinicians confirm this condition with genetic testing. This library does not diagnose.

Treatment education

Educational overview: care is multidisciplinary and individualized by specialists. This library does not prescribe.

Self-care

General education: coordinated specialist care and family support are important; genetic counselling can help families understand the condition.

When to seek care

Families are guided by their specialist care team; seek advice for new or changing symptoms.

Related topics

Last reviewed: 2026-01-01T00:00:00.000Z