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Living with 5q35 microduplication syndrome

A genetic condition with a small head, short height, developmental delay, and delayed bone growth.

Understanding 5q35 microduplication syndrome

5q35 microduplication syndrome is a genetic condition with an extra piece of chromosome 5.

It is linked with a smaller head size (microcephaly), short stature, developmental delay, and delayed bone maturation. Learning disability and behavior differences are also listed. GARD lists onset as childhood.

Signs & symptoms

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

  • Small head size (microcephaly)
  • Short stature
  • Intellectual disability
  • Delayed bone maturation
  • Specific learning disability
  • Nearsightedness (myopia)

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 Simons Searchlight and other patient organizations
  • 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
How should growth and bone age be tracked?
What supports help with learning disability?
Should my child see an eye doctor for nearsightedness?

Quick facts

Symptoms usually startChild

GARD says changes in genes (also called variants) cause this condition. The condition involves an extra piece of chromosome 5.

Genetic

Also known as: dup(5)(q35); trisomy 5q35

Patient organizations

Source: NIH GARD · 5q35 microduplication syndromeGARD ID 20595 · 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 5q35 microduplication syndrome.

Explore the 5q35 microduplication syndrome blog

Explore research for 5q35 microduplication syndrome

Explore actively recruiting 5q35 microduplication syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for 5q35 microduplication 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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