YBX1 and breast carcinoma: In order to determine the role of YB1 CTD in antiangiogenic signalling in breast cancer cells, cellular and secreted VEGF in Ad‐GFP‐YB1 CTD‐overexpressing SK‐BR‐3 cells were examined; and results demonstrated that YB1 CTD inhibited cellular and secreted VEGF expressions in SK‐BR‐3 breast cancer cells.