An adult patient has undergone genetic testing and the results reveal a genetic mutation that allows clinicians to make accurate predictions about disease onset and progression
This model for presymptomatic testing is most likely being used to address what disease?
A) Alzheimer's disease
B) Huntington disease
C) Tay-Sachs disease
D) Sickle cell disease
Ans: B
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Huntington disease has served as the model for presymptomatic testing because the presence of the genetic mutation predicts disease onset and progression. Presymptomatic testing is not typically undertaken in the identification of sickle cell, Tay-Sachs, or Alzheimer's disease because current technologies do not allow for this.
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