ETS1 and cancer: V-ets erythroblastosis virus E26 oncogene homolog 1 (Ets-1), one transcription factor of E26 transformation-specific (Ets) family, is upregulated in many solid tumors, such as breast [3], cervical [4], colorectal [5], lung [6], and ovarian [7, 8] cancers, which is associated with tumor angiogenesis and lymph node or distant metastasis [9].