Living with Mosaic trisomy 4
A rare chromosome condition with slow growth before birth, mild intellectual disability, heart defects, and thumb and facial differences.
Understanding Mosaic trisomy 4
Features vary and can include slow growth before birth, low birth weight, mild intellectual disability, heart defects, and thickened heart muscle. Facial differences include an uneven face and unusual ears and jaw. Thumbs may be small or missing, and skin color may differ in patches. Delayed puberty may also occur. Signs are seen during pregnancy or in the newborn period.
Signs & symptoms
GARD doesn't list a set of most common symptoms for this condition. Its summary describes these features:
- Slow growth before birth and low birth weight
- Mild intellectual disability
- Heart defects
- Small or missing thumbs
- Uneven face and unusual ears
- Patches of lighter or darker skin
Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.
Diagnosis
- 1Talk with your doctor
Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.
- 2See a specialist
Specialists who may be involved include genetic specialists.
- 3Ask which tests can help
Your care team will decide which exams and tests can confirm the diagnosis.
Care & treatment
- Care team
- 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 Chromosome Disorder Outreach
- 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
Quick facts
This condition is caused by an extra copy of chromosome 4 in a fraction of the body's cells. GARD says changes in genes (also called variants) cause it.
Also known as: mosaic trisomy 4 syndrome; mosaic trisomy chromosome 4; mosaic trisomy type 4; trisomy 4 mosaicism
Patient organizations
- Chromosome Disorder OutreachChromosome disorders · United States
Broader rare-disease groups
- Global GenesRare Diseases · United States
- National Organization for Rare DisordersRare Diseases · United States
- Genetic AllianceRare Diseases · United States
- RARE FoundationRare Diseases · United States
You are more than your diagnosis
Perspectives from people navigating life with Mosaic trisomy 4.
Explore research for Mosaic trisomy 4
Explore actively recruiting Mosaic trisomy 4 studies with HealthSpark.
Find actively recruiting studies for Mosaic trisomy 4 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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