In accordance to our findings, TGFB levels were found to be increased in people suffering from MDD (Davami et al., 2016; Kim et al., 2007; Kim et al., 2008) as well as in Chronic HBV-Infected Patients (CHB) with mild depression symptoms (Bahramabadi et al., 2017). The gene discussed is TGFB1; the disease is major depressive disorder.