MAO-B was also upregulated in postmortem brain tissues from ALS, epilepsy, Parkinsonian syndromes such as PSP, PD, and MSA (Aquilonius et al., 1992; Kumlien et al., 1992; Ekblom et al., 1993; Tong et al., 2017). The gene discussed is MAOB; the disease is Parkinson disease.