Indeed, ribavirin has not been associated with any type of reported neuropathy, but PEGASYS® including IFNα has been implicated to cause immune-mediated CIDP during chronic hepatitis C treatment due to cytokine-induced apoptosis in the myelin-producing oligodendrocytes, resulting in inhibition of central nervous system remyelination [6]. The gene discussed is IFNA2; the disease is chronic hepatitis C virus infection.