Circulating Blood circular RNA in Parkinson Disease; a systematic study
Beric, A.; Sun, Y.; Sanchez, S.; Martin, C.; Powell, T.; Pardo, J. A.; Sanford, J.; Botia, J. A.; Cruchaga, C.; Ibanez, L.
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We aimed to identify circRNAs associated with Parkinsons disease (PD) by leveraging 1,848 participants and 1,789 circRNA from two of the largest publicly available studies with longitudinal clinical and blood transcriptomic data. To comprehensively understand changes in circRNAs we performed a cross-sectional study utilizing the last visit of each participant, and a longitudinal (mix model) analysis that included 1,166 participants with at least two time points. We identified 192 circRNAs differentially expressed in PD participants compared to healthy controls, with effects that were consistent in the mixed models, mutation carriers, and diverse ancestry. Finally, we included the 149 circRNA in a model with a ROC AUC of 0.825, showing that have the potential to aid the diagnosis of PD. Overall, we demonstrated that circRNAs play an important role in PD and can be leveraged as biomarkers.
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