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Living with Distal trisomy 7p

A rare chromosome condition with significant delays in development, low muscle tone, and distinct facial features.

Understanding Distal trisomy 7p

Distal trisomy 7p is a rare condition caused by an extra piece of the short arm of chromosome 7.

People with this condition often have severe to profound delays in development and intellectual disability, along with low muscle tone. Head and facial features can include a large soft spot (fontanel), a broad forehead, and a small lower jaw. Differences in the heart, digestive system, bones, and urinary and genital systems are commonly reported. Signs begin during pregnancy or in the newborn period.

Signs & symptoms

GARD doesn't list specific symptoms for this condition separately, but the summary describes these features:

  • Severe to profound delays in development
  • Intellectual disability
  • Low muscle tone (hypotonia)
  • Distinct head and facial features
  • Heart or digestive differences
  • Bone or urinary differences

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 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
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
Bring these questions to your next doctor visit
What heart and digestive tests does my child need?
What therapies could help with muscle tone and feeding?
Which specialists should be on my child's care team?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn

GARD says changes in a person's genes cause this condition. The summary describes it as an extra copy of part of the short arm of chromosome 7.

Genetic

Also known as: distal duplication 7p; distal trisomy 7p syndrome; distal trisomy type 7p; telomeric duplication 7p; trisomy 7pter

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Distal trisomy 7pGARD ID 19307 · 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 Distal trisomy 7p.

Explore the Distal trisomy 7p blog

Explore research for Distal trisomy 7p

Explore actively recruiting Distal trisomy 7p studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Distal trisomy 7p 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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