Meanwhile, the number of Oxtr mRNA expression in SNc eYFP neurons in Oxtr‐Cre; Ai3 mice was also elevated in the MPTP‐treated group (Figure 5H,I), which is in line with the elevation of SN Oxtr protein expression in the MPTP‐induced PD model (Figure 1G). This evidence concerns the gene SACK1H and Parkinson disease.