For instance, microRNA‐124 could activate brain restoration in Parkinson's disease (Tarazi, Sahli, Wolny, & Mousa, 2014), miRNA‐205 has been reported to regulate the expression of Parkinson's disease‐related leucine‐rich repeat kinase 2 (LRRK2; Cho et al., 2013), and miRNA‐7 protected against MPP(+)‐induced PD cell apoptosis via KLF4, Bax, and Sirt2 (Kong et al., 2016; Li et al., 2016). Here, KLF4 is linked to Parkinson disease.