Of the epithelial, mesenchymal, and epithelial/mesenchymal (E/M) hybrid CTCs, we found that the E/M hybrid CTCs were closely associated with EBV infection, with the highest levels of EBV DNA, EBV-specific viral capsid antigen (VCA)-IgA, and early antigen (EA)-IgA detected in this CTC subpopulation (12). The gene discussed is CD79A; the disease is Epstein-Barr virus infection.