TACC2 and breast carcinoma: Effects of TACC2 expression on cell proliferation in breast carcinoma cell lines were summarized in Figures 3C and D. The number of cells was significantly lower in MCF‐7 cells transfected with TACC2 siRNA (P < 0.05 and 0.84‐fold in si1, and P < 0.001 and 0.75‐fold in si2) than the control cells transfected with NC at 72 h after the transfection.