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Is Angelman Syndrome Genetic?
- Heritability
- ~100%
- Inheritance
- other
- Key genes
- UBE3A
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Angelman syndrome is caused by loss of the maternal copy of the UBE3A gene on chromosome 15 and results in severe intellectual disability.
How Genetic Is Angelman Syndrome?
Angelman Syndrome has a strong genetic basis. Research estimates heritability at approximately 100%, meaning genetic factors account for the majority of variation in whether individuals develop this condition.
Key genes associated with Angelman Syndrome: UBE3A. Variants in these genes have been identified through genome-wide association studies (GWAS) and clinical research as influencing susceptibility or severity.
Source: MedlinePlus Genetics
Does Family History Matter for Angelman Syndrome?
Yes — family history is one of the strongest predictors of Angelman Syndrome. If a first-degree relative (parent, sibling, or child) has been diagnosed, your own risk may be significantly elevated. Discussing your family history with a healthcare provider or genetic counsellor is strongly recommended.
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