Akahane et al. [35] found an increased Receptor tyrosine-protein kinase 2 expression (c-erbB-2) in CCC and EnOC, first observed in AE, but Saìnz de la Cuesta et al. [34] did not observe any differences in (erbB-2) between cancer and AE because it was never expressed. The gene discussed is ERBB2; the disease is cancer.