Trajectories of plasma Aβ42/40 among African Americans: Preliminary results from the African American Fighting Alzheimer’s in Midlife (AA‐FAIM) study

African Americans (AA) are under‐represented in Alzheimer’s disease (AD) biomarker research. Blood‐based biomarkers for AD offer the promise of greater diversity in research studies, but little is known about the performance of these biomarkers within an AA cohort. We examined the association between modifiable and non‐modifiable risk factors on the trajectory of plasma measures of Aβ42/40 in a large well‐characterized AA cohort.