Huntington's disease is a disorder that may be inherited.
Dominance (genetics) . Dominance is a key concept in Mendelian inheritance and classical genetics . The Hereditary Disease Foundation ( HDF ) aims to cure genetic disorders , notably Huntington 's disease , by supporting basic biomedical research . Huntington 's disease ( HD ) , also known as Huntington 's chorea , is an inherited disorder that results in death of brain cells . The disease is caused by an autosomal dominant mutation in either of an individual 's two copies of a gene called Huntingtin .