These findings establish a direct link between aberrant CYP activity and the development or exacerbation of several neurological disorders [31,32,37,39,40,41] such as Alzheimer’s disease (AD) [42,43,44], Parkinson’s disease (PD) [45,46], Huntington disease (HD) [47,48,49], schizophrenia [50,51,52], and other psychiatric and neurodegenerative conditions [53,54,55,56], unveiling intricate molecular pathophysiological mechanisms. The gene discussed is PPIG; the disease is Parkinson disease.