Liang et al. showed the enrichment of cancer-associated signaling pathway proteins within the exosomes such as epithelial cell surface antigen (EpCAM), epidermal growth factor receptor (EGFR), apolipoprotein E (APOE), proliferation cell nuclear antigen (PCNA), with a potential role as diagnostic markers and therapeutic targets for OC treatment [154]. Here, EGFR is linked to cancer.