IFNα2 inhibits viral infection through the induction of interferon stimulated genes (ISGs), the products of which inhibit the replication of viruses by acting at different stages of the virus life cycle or through the activation of immune cells such as NK cells, as in the case of hepatitis C virus infection, the clearance of the virus is linked with the activation of an immune response to the virus [5,6,7,8]. The gene discussed is IFNA2; the disease is viral infectious disease.