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Living with Paternal uniparental disomy of chromosome 6

A chromosome pattern with slow growth before birth, temporary diabetes in newborns, and a large tongue.

Understanding Paternal uniparental disomy of chromosome 6

Paternal uniparental disomy of chromosome 6 is a chromosome pattern in which both copies of chromosome 6 come from the father.

It is described by slow growth before birth, temporary neonatal diabetes (high blood sugar in newborns), and a large tongue (macroglossia). Signs are noticed during pregnancy and in newborns.

Signs & symptoms

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

  • Slow growth before birth
  • Temporary diabetes in newborns
  • Large tongue (macroglossia)
  • Breathing trouble in newborns
  • Enlarged liver or heart
  • Small lower jaw (micrognathia)

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
How should newborn blood sugar be managed?
Does the diabetes go away, and how will we check?
What care is needed for the large tongue and feeding?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn

Both copies of chromosome 6 come from the father, which causes the condition.

Genetic

Also known as: paternal uniparental disomy of chromosome type 6; upd(6)pat

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Paternal uniparental disomy of chromosome 6GARD ID 19340 · 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 Paternal uniparental disomy of chromosome 6.

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