One of the potential limitations of the study's findings is the relative lack of racial and ethnic diversity in the participant population. The study primarily focused on individuals from North America, which may not fully represent the genetic diversity of global populations. As a result, the findings may not be directly applicable to non-European populations, limiting the generalizability of the results. The lack of diversity could also lead to biases in the study, as certain genetic variants or risk factors prevalent in specific racial or ethnic groups may not have been adequately captured. To address this limitation, future studies should aim to include a more diverse participant population to ensure the comprehensive understanding of genetic factors influencing Parkinson's disease across different ethnicities.