In Huntington's Disease the Age of Onset Is

Question

In Huntington's disease the age of onset is:
A) Proportionally correlated with the number of CAG repeats
B) Inversely correlated with the number of CAG repeats
C) Always at 30 years of age
D) Always between 30 and 40 years of age
E) None of these

Accepted Answer

The age of onset of Huntington's disease is inversely correlated with the number of CAG repeats in the HTT gene; the more repeats, the earlier the onset of the disease.