19. Which genetic mutation is associated with an increased risk of early-onset Alzheimer's disease? a) APOE ?4 b) APP c) PSEN1 d) PSEN2 20. Which of the following is a common symptom of frontotemporal dementia? a) Memory loss
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Mutations in the PSEN1 gene are known to cause early-onset familial Alzheimer's disease. Show more…
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