Recently, several studies have reported expression of VEGFR2 on tumor cells.[27,28] VEGFR2 is one of the antigens that is selectively upregulated on activated tumor-associated endothelial cells.[29] Tumor cells express VEGF, which binds to VEGFR2 on endothelial cells[30]; therefore, promoting tumor angiogenesis. The gene discussed is KDR; the disease is neoplasm.