Generalizability of tau and amyloid plasma biomarkers in Alzheimer's disease cohorts of diverse genetic ancestries.

When analyzing each cohort separately, plasma pTau181 concentrations were significantly higher in AD versus CU in AA ( p = 1.88 × 10 −8 , Figure 3B ) and CH ( p = 3.13 × 10 −7 , Figure 3D ) with a trend that did not reach statistical significance for Peruvians ( p = 0.07, Figure 3C ).

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