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Is Charcot-Marie-Tooth Disease Genetic?
- Heritability
- ~100%
- Inheritance
- autosomal-dominant
- Key genes
- PMP22 MPZ GJB1
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The most common inherited peripheral neuropathy affecting 1 in 2500. Hundreds of mutations across multiple genes cause varying subtypes.
How Genetic Is Charcot-Marie-Tooth Disease?
Charcot-Marie-Tooth Disease 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 Charcot-Marie-Tooth Disease: PMP22 MPZ GJB1. 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 Charcot-Marie-Tooth Disease?
Yes — family history is one of the strongest predictors of Charcot-Marie-Tooth Disease. 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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