Another substantial review by Gajdosova showed that SPCEs modified with reduced graphene oxide (RGO)/MWCNT, graphene oxide, ZrO2-RGO, Au Nps-SWCNTs, Au nanoflowers and TiO2-nanotubes were used to identify different markers for cancer disease as BRCA1, MUC, recombinant human CA125/MUC16 protein, miRNA-21 and MUC1 and MCF-7 MDA-MB-2 [26]. Here, MUC16 is linked to cancer.