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Start free with EleplanGalloway-Mowat syndrome
ORPHA:2065Malformation syndrome
Also called Galloway syndrome · Microcephaly-hiatus hernia-nephrotic syndrome · Nephrosis-neuronal dysmigration syndrome
What it is
A rare, genetic multisystem disorder characterized by a neurodegenerative disorder associating global developmental delay, progressive microcephaly, and progressive cerebral and cerebellar atrophy with extrapyramidal involvement, progressive optic atrophy, and in many patients early-onset steroid-resistant nephrotic syndrome.
Key facts
- Prevalence
- 1-9 / 1 000 000
- Age of onset
- Childhood, Infancy, Neonatal
- Inheritance
- Autosomal recessive, X-linked recessive
- Classified as
- Malformation syndrome
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Very common80–99%
7Common30–79%
9These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Genes
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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