YAP1 and breast cancer: CCK‐8 assays revealed that overexpression of YAP1 significantly increased the MDA‐MB‐231 and MDA‐MB‐468 cell numbers at 48 h after plating compared to vector control cells (Fig. 2C,D), while knockdown of YAP1 inhibited the proliferation of BC cells significantly (Fig. 2E,F).