What is the mortality rate of canavan disease?

Answer 1

Canavan's disease is a degenerative genetic disease of the brain. Approx 42,000 people in America are carriers and both parents must be carriers to pass it down. in cases where both parents are carriers the child has a 1 in 4 chance of developing the disease.

Of those children who do develop Canavan's most die before the age of 4, although there are some rare occurrences of children living to teens.

There is no cure and it is progressive so it is 100% fatal at some point.