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Additional research needed to determine if role is causative. 

Analysis of large data sets from post-mortem brain samples of people with and without Alzheimer’s disease has revealed new evidence that viral species, particularly herpesviruses, may have a role in Alzheimer’s disease biology. Researchers funded by the National Institute on Aging (NIA), part of the National Institutes of Health, made the discovery by harnessing data from brain banks and cohort studies participating in the Accelerating Medicines Partnership – Alzheimer’s Disease (AMP-AD) consortium. Reporting in the June 21 issue of the journal Neuron (link is external), the authors emphasize that their findings do not prove that the viruses cause the onset or progression of Alzheimer’s. Rather, the findings show viral DNA sequences and activation of biological networks — the interrelated systems of DNA, RNA, proteins and metabolites — may interact with molecular, genetic and clinical aspects of Alzheimer’s.

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