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Start free with EleplanTrisomy 17p syndrome
ORPHA:261290Malformation syndrome
Also called Dup(17p)
What it is
Trisomy 17p is a rare chromosomal abnormality resulting from the duplication of the short arm of chromosome 17 and characterized by pre- and post-natal growth retardation, developmental delay, hypotonia, digital abnormalities, congenital heart defects, and distinctive facial features.
Key facts
- Age of onset
- Infancy, Neonatal
- Inheritance
- Not applicable, Unknown
- Classified as
- Malformation syndrome
Signs and symptoms
Very common80–99%
9Common30–79%
16Sometimes5–29%
25- Aortic valve stenosis
- Broad eyebrow
- Cataract
- Cleft palate
- Coarse facial features
- Downslanted palpebral fissures
- Hearing impairment
- High anterior hairline
and 17 more in this range
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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