CD2BP2 and breast cancer: The Cell Counting Kit‐8 (CCK‐8), 5‐Ethynyl‐2′‐deoxyuridine (EdU) and colony formation assays demonstrated that knockdown of CD2BP2‐DT significantly inhibited breast cancer cell proliferation, while overexpression of CD2BP2‐DT promoted proliferation (Figure 2C–E; Figure S2B–D, Supporting Information).