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Trisomy 18p
What is Trisomy 18p?
A rare partial trisomy of the short arm of chromosome 18 manifesting with a highly variable clinical phenotype which may include variable developmental delay and intellectual disability, epilepsy, and non-specific dysmorphic features, among others.
Other condition names
Duplication 18p
Duplication of the short arm of chromosome 18
Trisomy of the short arm of chromosome 18
Prevalence
Worldwide: <1 in 1,000 000
Age of Onset
Adolescent
Adult
Childhood
Infancy
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on
"https://www.orphadata.com"
. Data version 1.3.16 / 4.1.7.