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Living with Ventriculomegaly-cystic kidney disease

A rare genetic condition found before birth, with enlarged fluid spaces in the brain and cysts in the kidneys.

Understanding Ventriculomegaly-cystic kidney disease

Ventriculomegaly-cystic kidney disease is a rare genetic syndrome with enlarged fluid spaces in the brain and kidney cysts.

GARD describes three main findings: high alpha-fetoprotein levels in the mother's blood and amniotic fluid, enlarged brain ventricles (ventriculomegaly), and kidney cysts. Other findings can include kidney protein loss at birth, a narrow brain fluid channel, and heart differences. It is often found during pregnancy.

Signs & symptoms

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

  • Enlarged fluid spaces in the brain (ventriculomegaly)
  • Kidney cysts
  • Bright-looking kidneys on ultrasound
  • Seizures

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, genetic specialists and kidney specialists.

  3. Consider genetic testing

    Changes in CRB2 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); Kidney specialists (nephrologists)
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 National Kidney 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
Could CRB2 genetic testing confirm this?
How will the brain and kidneys be monitored?
What are the chances of this happening in another pregnancy?

Quick facts

Symptoms usually startduring Pregnancy
InheritanceAutosomal Recessive
GenesCRB2

This condition is caused by changes in the CRB2 gene. A child inherits a changed copy of the gene from each parent (autosomal recessive).

GeneticNeurologicalKidney

Also known as: cerebral ventriculomegaly, cystic kidney disease; congenital nephrosis-cerebral ventriculomegaly syndrome; congenital nephrosis, cerebral ventriculomegaly syndrome; ventriculomegaly with cystic kidney disease; vmckd; vmckd - ventriculomegaly with cystic kidney disease

Patient organizations

Source: NIH GARD · Ventriculomegaly-cystic kidney diseaseGARD ID 17757 · 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 Ventriculomegaly-cystic kidney disease.

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