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Living with Distal trisomy 2p

A rare chromosome condition with slow growth, delayed development, distinct facial features, and eye differences.

Understanding Distal trisomy 2p

Distal trisomy 2p is a rare condition caused by an extra piece of the short arm of chromosome 2.

The condition varies a great deal. It often involves slow growth before and after birth, global developmental delay, distinct facial features, and eye differences such as bulging eyes or underdeveloped parts of the eye. Low muscle tone, hand and foot differences, and heart, lung, neural tube, and urinary and genital differences have also been reported, as have seizures. Signs are present from the newborn period.

Signs & symptoms

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

  • Slow growth before and after birth
  • Delays in overall development
  • Eye differences
  • Low muscle tone (hypotonia)
  • Heart differences
  • Seizures

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 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
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 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
Which eye specialist should see my child?
What heart and lung tests does my child need?
How should seizures be watched for?

Quick facts

Symptoms usually startNewborn

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 2.

Genetic

Also known as: distal duplication 2p; distal trisomy type 2p; telomeric duplication 2p; trisomy 2pter

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Distal trisomy 2pGARD ID 19304 · 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 2p.

Explore the Distal trisomy 2p blog

Explore research for Distal trisomy 2p

Explore actively recruiting Distal trisomy 2p studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Distal trisomy 2p 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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