The genes included in the KEGG pathway of ‘Parkinson's disease’ (hsa05012) were ATP5E, UQCRB, UQCRC1, and UQCRFS1 in the first cohort, and ATP5B, ATP5O, COX4I1, COX8A, NDUFA4L2, NDUFB11, NDUFB2, NDUFB8, NDUFS5, UBE2L3, UQCR11, and UQCRH in the second cohort. Here, UQCRB is linked to Parkinson disease.