Huntingtons was first described in 1872 by 22-year-old American physician George Huntington.
Patients and doctors often say Huntingtons is like having Alzheimers, amyotrophic lateral sclerosis and Parkinsons -- all at the same time.
The development of a genetic test for the disease in 1994 allowed children of a parent with Huntingtons to know whether they will eventually come down with the disease.
Those with Huntingtons or at risk of the disease have been waiting a long time for a breakthrough.
He was hoping to study Huntingtons, which killed his mother when he was still a child.
Important progress in identifying the gene came from Wexlers study of a village in Venezuela where she and a team of researchers, over the past four decades, have identified 18,149 individuals with Huntingtons spanning 10 generations.