Alzheimer's study suggests genetic cause of specific form of disease- Harvard Gazette
Briefly

Designating this form of Alzheimer's means a group extremely likely to develop it could be treated earlier, impacting dementia prevention.
The group with a genetic component develops amyloid plaques and tau tangles in late 50s/early 60s, linking to Alzheimer's symptoms.
Bridge found between rare genetically determined Alzheimer's and the newly identified gene variant APOE4 causing up to a fifth of cases.
Read at Harvard Gazette
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