In this study, we tested the expression of the four differentially expressed circRNAs in PD model mice treated with rotenone by qRT–PCR and found that mmu_circRNA_32463 increased most significantly and derived from the pantothenate kinase 1 (Pank1) gene, so we named it circ-Pank1. The gene discussed is PANK1; the disease is Parkinson disease.