AGO2 and chronic hepatitis C virus infection: AGO2-Abs, previously detected in systemic autoimmune conditions and chronic Hepatitis C without specific disease association (Vázquez-Del Mercado et al., 2010; Satoh et al., 2013), have recently been found in autoimmune neurological disorder patients, indicating their potential as markers of neurological autoimmunity (Do et al., 2021).