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Living with Odontoleukodystrophy

A rare condition affecting the brain, teeth, and hormones, with trouble with movement, balance, and coordination.

Understanding Odontoleukodystrophy

Odontoleukodystrophy, also called 4H leukodystrophy, is a rare condition that affects the brain, nerves, teeth, and puberty hormones.

Nerves lack enough myelin, their protective covering, which can cause delayed development or lost skills and problems with movement, balance, and coordination. People usually have dental differences, such as delayed or missing teeth. Puberty may be delayed or absent due to low sex hormones. GARD lists infancy as the usual time of onset.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. Based on its summary, features may include:

  • Too little myelin (hypomyelinating leukodystrophy)
  • Delayed development or loss of skills
  • Problems with movement, balance, and coordination
  • Delayed or missing teeth
  • Delayed or absent puberty

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 brain and nervous system specialists and genetic specialists.

  3. Consider genetic testing

    Changes in POLR3A are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    United Leukodystrophy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
Expert care
Expert lists: United Leukodystrophy Foundation
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 YaYa Foundation 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
Which therapies can help with balance and coordination?
What hormone evaluation is needed for puberty?
Would POLR3A genetic testing help my family?

Quick facts

Symptoms usually startInfant
InheritanceAutosomal Recessive
GenesPOLR3A

Changes in the POLR3A gene cause this condition. It is inherited in an autosomal recessive way, meaning a child inherits a changed copy of the gene from each parent.

GeneticNeurological

Also known as: dentoleukoencephalopathy

Patient organizations

Source: NIH GARD · OdontoleukodystrophyGARD ID 9632 · 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 Odontoleukodystrophy.

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Explore research for Odontoleukodystrophy

Explore actively recruiting Odontoleukodystrophy studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Odontoleukodystrophy 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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