Question: Is CADASIL inherited ?
Answer: How is CADASIL inherited? CADASIL is inherited in an autosomal dominant manner. This means that having a mutation in only one copy of the responsible gene in each cell is enough to cause CADASIL. In most cases, an affected person inherits the mutated gene from an affected parent. In rare cases, CADASIL may result from having a new mutation in the gene, in which case it is not inherited from a parent. When a person with an autosomal dominant condition has children, each child has a 50% (1 in 2) chance to inherit the mutated copy of the gene.
Source: GARD