An indium tin oxide (ITO) electrode-based innovative impedimetric immunosensor modified with reduced graphene oxide-gold nanoparticle (rGO-AuNP) hybrid structure was presented by Yagati et al. [122] for the detection of C-Reactive Protein (CRP), an important biomarker especially used in the diagnosis of cardiovascular diseases, infectious diseases, cancer diseases, etc., and also in monitoring the response to treatment. The gene discussed is CRP; the disease is infectious disease.