Huntington's disease is caused by inheritance in 100% of cases.
Huntington 's disease ( HD ) , also known as Huntington 's chorea , is an inherited disorder that results in death of brain cells . HD is typically inherited from a person 's parents , with 10 % of cases due to a new mutation . The disease is caused by an autosomal dominant mutation in either of an individual 's two copies of a gene called Huntingtin .