FRAXE intellectual disability

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FRAXE intellectual disability

ORPHA:100973Disease

Also called Intellectual disability associated with fragile site FRAXE

What it is

A rare X-linked syndromic intellectual disability characterized by a variable clinical picture including developmental delay, mild to moderate intellectual disability, learning difficulties, communication deficits, and behavioral problems (such as aggression, attention deficit, hyperactivity, and autistic features). Personality disorder and psychotic behavior have also been reported.

Key facts

Prevalence
1-9 / 1 000 000 (Europe)
Age of onset
Antenatal, Infancy, Neonatal
Inheritance
X-linked recessive
Classified as
Disease

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

These 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

AFF2Disease-causing germline mutation(s)
FMR3Disease-causing germline mutation(s)

ICD-10 codes

Q99.2filed under a broader ICD-10 category — shared with 2 other rare diseases

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

GARD 2378MONDO 0010659OMIM 309548UMLS C4274328

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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