Perspectives From Black and White Participants and Care Partners on Return of Amyloid and Tau PET Imaging and Other Research Results.

Purpose: Alzheimer disease (AD) biomarker testing is now common in research and approaching clinical translation. Disclosure protocols must be informed by diverse participants' perspectives on if/how the information would be useful.

Methods: This study utilized semistructured interviews assessing interest in receiving positron emission tomography (PET) amyloid and tau results, as well as perceived risks and benefits of hypothetical PET disclosure as a function of race and participant diagnosis.

Participants: Participants [39% Black; 61% White; Mage =74.28 (5.98)] included 57 adults diagnosed as either cognitively healthy (58%) or with mild cognitive impairment (42%) and their respective care partners [33% Black; 67% White; Mage =66.93 (10.92)].

Results: Most dyads endorsed strong interest in PET results (82.5% of both participants and partners) regardless of race or diagnosis. Black care partners were less interested in receiving the participant's results than White care partners ( χ2(4) =8.31, P =0.047). Reasons for disclosure were diverse and highly personalized, including access to treatments or clinical trials (23.2% participants; 29.8% partners), advance planning (14.3% participants; 17.5% partners), and improved health knowledge (12.5% participants; 15.8% partners). In contrast, over 80% of respondents denied any risks of disclosure.

Discussion: Results suggest that predisclosure education, decisional capacity assessment, and a flexible disclosure approach are needed.