Furthermore, it increases the neuro fibers in the striatum, restores the tyrosine hydroxylase (TH) positive neurons in the substantia nigra, reduces caspase‐3 to increase the Bcl2/BAX ratio, and consequently improves the performance of mice in behavioral tests, thereby establishing possibility of this molecule to be used in therapy of PD (Qin et al. 2019). The gene discussed is BCL2; the disease is Parkinson disease.