TY - JOUR
T1 - Diversity in Alzheimer's disease drug trials
T2 - The importance of eligibility criteria
AU - Franzen, Sanne
AU - Smith, Jade Emily
AU - van den Berg, Esther
AU - Rivera Mindt, Monica
AU - van Bruchem-Visser, Rozemarijn L.
AU - Abner, Erin L.
AU - Schneider, Lon S.
AU - Prins, Niels D.
AU - Babulal, Ganesh M.
AU - Papma, Janne M.
N1 - Publisher Copyright:
© 2021 The Authors. Alzheimer's & Dementia published by Wiley Periodicals LLC on behalf of Alzheimer's Association.
PY - 2022/4
Y1 - 2022/4
N2 - Introduction: To generalize safety and efficacy findings, it is essential that diverse populations are well represented in Alzheimer's disease (AD) drug trials. In this review, we aimed to investigate participant diversity in disease-modifying AD trials over time, and the frequencies of participant eligibility criteria. Methods: A systematic review was performed using Medline, Embase, the Cochrane Library, and Clinicaltrials.gov, identifying 2247 records. Results: In the 101 included AD trials, participants were predominantly White (median percentage: 94.7%, interquartile range: 81.0–96.7%); and this percentage showed no significant increase or decrease over time (2001–2019). Eligibility criteria such as exclusion of persons with psychiatric illness (78.2%), cardiovascular disease (71.3%) and cerebrovascular disease (68.3%), obligated caregiver attendance (80.2%), and specific Mini-Mental State Examination scores (90.1%; no significant increase/decrease over time) may have led to a disproportionate exclusion of ethnoracially diverse individuals. Discussion: Ethnoracially diverse participants continue to be underrepresented in AD clinical trials. Several recommendations are provided to broaden eligibility criteria.
AB - Introduction: To generalize safety and efficacy findings, it is essential that diverse populations are well represented in Alzheimer's disease (AD) drug trials. In this review, we aimed to investigate participant diversity in disease-modifying AD trials over time, and the frequencies of participant eligibility criteria. Methods: A systematic review was performed using Medline, Embase, the Cochrane Library, and Clinicaltrials.gov, identifying 2247 records. Results: In the 101 included AD trials, participants were predominantly White (median percentage: 94.7%, interquartile range: 81.0–96.7%); and this percentage showed no significant increase or decrease over time (2001–2019). Eligibility criteria such as exclusion of persons with psychiatric illness (78.2%), cardiovascular disease (71.3%) and cerebrovascular disease (68.3%), obligated caregiver attendance (80.2%), and specific Mini-Mental State Examination scores (90.1%; no significant increase/decrease over time) may have led to a disproportionate exclusion of ethnoracially diverse individuals. Discussion: Ethnoracially diverse participants continue to be underrepresented in AD clinical trials. Several recommendations are provided to broaden eligibility criteria.
KW - clinical trial
KW - clinical trial protocols
KW - cultural diversity
KW - ethnic groups
KW - phase II
KW - phase III
KW - randomized controlled trials
UR - http://www.scopus.com/inward/record.url?scp=85115916455&partnerID=8YFLogxK
U2 - 10.1002/alz.12433
DO - 10.1002/alz.12433
M3 - Review article
C2 - 34590409
AN - SCOPUS:85115916455
SN - 1552-5260
VL - 18
SP - 810
EP - 823
JO - Alzheimer's and Dementia
JF - Alzheimer's and Dementia
IS - 4
ER -