Twenty-one hub genes were screened out, and a PD-related ceRNA regulatory network was constructed containing 31 circRNAs, one miRNA (miR-371a-3p), and one hub gene (KCNJ6).<h4>Conclusion</h4>We identified PD-related molecular markers and ceRNA regulatory networks, providing new directions for PD diagnosis and treatment. The gene discussed is KCNJ6; the disease is Parkinson disease.