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Start free with EleplanXp22.13p22.2 duplication syndrome
ORPHA:284180Malformation syndrome
Also called Dup(X)(p22) · Dup(X)(p22.13p22.2) · Duplication Xp22
What it is
A rare syndromic intellectual disability characterized by developmental delay and intellectual disability, learning and behavioral problems, short stature, thin and sparse hair, mild dysmorphic features, tapering fingers and later onset of scoliosis, obesity and cardiovascular problems (cardiomegaly and cardiomyopathy). Females have normal intelligence.
Key facts
- Prevalence
- <1 / 1 000 000 (Europe)
- Age of onset
- Infancy, Neonatal
- Inheritance
- 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%
24- 2-3 toe syndactyly
- Abnormal facial shape
- Abnormally high-pitched voice
- Broad nasal tip
- Congenital diaphragmatic hernia
- Downslanted palpebral fissures
- Flared nostrils
- High palate
- Hypertelorism
- Hypotonia
- Intellectual disability, moderate
- Macroorchidism
- Mandibular prognathia
- Microcephaly
- Moderate global developmental delay
- Pectus excavatum
- Short neck
- Short stature
- Slowed slurred speech
- Small hand
- Sparse hair
- Tapered finger
- Truncal obesity
- Umbilical hernia
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.
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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