Deregulation of PGC‐1α/FNDC5/BDNF pathway was indicated in PD that may be a result of aberrant expression of miR‐193b, verifying the importance of PGC‐1α/FNDC5/BDNF pathway and miR‐193b as well as their associations in PD pathology. The gene discussed is BDNF; the disease is Parkinson disease.