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5. Lau YH, et al. Does ethnicity influence recruitment into clinical trials of Parkinson’s disease? J Parkinsons Dis. 2022. A systematic search of PD trials between 2017 and 2021 on the clinicaltrials.gov database revealed that only 42.65% of the 57 trials published in peer-reviewed journals reported participant racial distribution. Of these, only 5 studies had mixed racial representation and only 2 had Black research participants—supporting the need for increased reporting and recruitment of racial diversity in PD clinical trials.