A Question About CMT and Heredity

[Guest guest]

My sister and I were tested and found to have CMT. We know from neurological

tests and clinic notes that we found of our now deceased father that he also had

CMT. My brother does not appear to have any of the symptoms and possibly

escaped the disease.

Question: If there is a 50%/50% chance of inheriting the disease does that mean

that the disease will not exist in the genes of my brother and his offspring?

-wheels