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Living with Leukoencephalopathy with calcifications and cysts

A rare inherited condition of the small blood vessels in the brain, with calcium deposits and cysts that cause nervous system problems.

Understanding Leukoencephalopathy with calcifications and cysts

Leukoencephalopathy with calcifications and cysts is a rare genetic disease that affects the small blood vessels in the brain.

It damages the brain's white matter and causes calcium buildup and fluid-filled sacs (cysts) in brain tissue. It can affect people of any age and gets worse over time. All forms involve nervous system problems, such as trouble thinking and seizures.

Signs & symptoms

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

  • Trouble thinking (cognitive impairment)
  • Seizures
  • Poor balance and coordination (ataxia)
  • Calcium deposits in the brain
  • Brain cysts
  • Mood swings (emotional lability)

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 SNORD118 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); 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 The LCC Foundation
  • 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
Would SNORD118 gene testing help our family?
Which specialists should follow seizures and movement?
How often should brain imaging be done?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Recessive
GenesSNORD118

It is caused by changes in the SNORD118 gene. A child inherits a changed copy of the gene from each parent (autosomal recessive).

GeneticNeurological

Also known as: labrune syndrome; lcc; leukoencephalopathy, brain calcifications, and cysts

Patient organizations

Source: NIH GARD · Leukoencephalopathy with calcifications and cystsGARD ID 10732 · 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 Leukoencephalopathy with calcifications and cysts.

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