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Living with McDonough syndrome

A rare genetic syndrome from birth with distinct facial features, developmental delay, and heart defects.

Understanding McDonough syndrome

McDonough syndrome is a rare syndrome with multiple birth differences, including facial features, delays in development, and heart defects.

Features include distinct facial features, delayed development, intellectual disability, and heart defects. Other features include a chest shaped differently, a curved spine, and undescended testes. GARD notes no further descriptions have been published since 1984.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Heart defects
  • Intellectual disability
  • Crossed eyes (strabismus)
  • Large, low-set or backward-rotated ears
  • Funnel chest (pectus excavatum)
  • Curved spine (kyphosis)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists, eye disease specialists and genetic specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Is genetic testing available for this syndrome?
How should the heart be checked?
Which therapies can support development?

Quick facts

Symptoms usually startNewborn and as an Infant

Changes in genes (also called variants) cause this condition. GARD does not name a specific gene.

GeneticNeurological

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · McDonough syndromeGARD ID 3424 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with McDonough syndrome.

Explore the McDonough syndrome blog

Explore research for McDonough syndrome

Explore actively recruiting McDonough syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for McDonough syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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