Skip to content
knowrare
HealthSignal
Your condition community

Living with Hypomyelinating leukodystrophy 3

A rare genetic brain condition from infancy caused by changes in the AIMP1 gene, with developmental delay and stiffness.

Understanding Hypomyelinating leukodystrophy 3

Hypomyelinating leukodystrophy 3 is a leukodystrophy (a condition of the brain's white matter) caused by a change in the AIMP1 gene.

It begins in newborns and infants. Features can include a small head, no speech, global developmental delay, stiff legs, fast eye movements, and vision problems.

Signs & symptoms

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

  • Global developmental delay
  • Absent speech
  • Small head (microcephaly)
  • Stiff legs (spastic paraparesis)
  • Seizures
  • Fast eye movements (nystagmus)

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 AIMP1 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 Hunter's Hope 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 movement and communication?
How should vision and seizures be monitored?
Would genetic testing for AIMP1 help our family?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesAIMP1

Changes in the AIMP1 gene cause this condition. It is autosomal recessive, so a child inherits a changed copy of the gene from each parent.

GeneticNeurological

Also known as: aimp1 leukodystrophy; hld3; hypomyelinating leukodystrophy type 3; leukodystrophy caused by mutation in aimp1; leukodystrophy, hypomyelinating, type 3; pelizaeus-merzbacher-like disease due to aimp1 mutation

Patient organizations

Source: NIH GARD · Hypomyelinating leukodystrophy 3GARD ID 4266 · 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 Hypomyelinating leukodystrophy 3.

Explore the Hypomyelinating leukodystrophy 3 blog

Explore research for Hypomyelinating leukodystrophy 3

Explore actively recruiting Hypomyelinating leukodystrophy 3 studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Hypomyelinating leukodystrophy 3 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

Powered by HealthSpark, our AI chat helper

I can help you find recruiting Hypomyelinating leukodystrophy 3 studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

Get Signals for Hypomyelinating leukodystrophy 3

Stay in the loop with community stories and updates from medical researchers.

HealthStoryfor Hypomyelinating leukodystrophy 3

Create a living journal that talks back

HealthStory evolves private journaling with a living AI journal that talks back and asks thoughtful questions, helping you capture your Hypomyelinating leukodystrophy 3 experiences more deeply and prepare for better conversations with your doctors and care team.

Start your journal

Your journal is private. Sharing your story publicly is a separate choice, made with Share your story above.