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Living with Microcephaly-glomerulonephritis-marfanoid habitus syndrome

A rare syndrome with intellectual disability, a small head, a tall slender build, and kidney inflammation.

Understanding Microcephaly-glomerulonephritis-marfanoid habitus syndrome

Microcephaly-glomerulonephritis-marfanoid habitus syndrome is a rare syndrome with intellectual disability, a small head, and kidney problems.

It is a rare intellectual disability syndrome. People have a small head, a tall and slender body shape like that seen in Marfan syndrome (marfanoid habitus), and glomerulonephritis, which is inflammation of the kidneys' filters. GARD notes there have been no further reports since 1992. Signs are seen in the newborn period.

Signs & symptoms

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

  • Small head from birth (primary microcephaly)
  • Moderate intellectual disability
  • Kidney inflammation (glomerulonephritis)
  • Chronic kidney disease
  • Tall stature with long, slender fingers
  • Very flexible joints

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. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

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 rare disease patient organizations for support
  • 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 often should kidney function be checked?
Which specialists, such as a kidney doctor, should be involved?
Is genetic testing available for this syndrome?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Recessive

Changes in genes (also called variants) cause this syndrome, and it is inherited in an autosomal recessive way. This means a child inherits a changed copy of the gene from each parent.

GeneticNeurological

Also known as: marfanoid habitus with microcephaly and glomerulonephritis

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Microcephaly-glomerulonephritis-marfanoid habitus syndromeGARD ID 3615 · 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 Microcephaly-glomerulonephritis-marfanoid habitus syndrome.

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