Huntington’s disease (HD) is a rare disorder of the central nervous system (CNS) which causes the degeneration of nerve cells. It is an autosomal dominant disease characterized by involuntary choreatic movements, psychiatric and behavioral disturbances, and dementia. The mean age of symptom onset is 30–50 years. HD is caused by the presence of >40 cytosine-adenine-guanine (CAG) repeats within the Huntingtin gene. The length of the CAG repeats is inversely associated with the age of disease onset – the longer the repeat, the earlier the onset. In the case of juvenile HD (JHD), the length of the repeat is >55 and the disease’s symptoms are seen in patients aged <20 years. Learning disabilities and behavioral disturbances are the first symptoms in patients with JHD. 

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