We found that RB5 prevented tyrosine hydroxylase (TH) loss in the substantia nigra pars compact (SNc, Fig 5G) and counteracted apoptotic cell death (Fig 5H) in the 1‐methyl‐4‐phenyl‐1,2,3,6‐tetrahydropyridine (MPTP) mouse model of PD (Carta et al, 2013; Lecca et al, 2015). The gene discussed is TH; the disease is Parkinson disease.