TGFB2 and breast cancer: We found that miR‐141, miR‐200a and miR‐145 (miRNAsTGFβ2) levels were significantly lower in TNBC than in ERα+ luminal type BC (Figure 4B) and that miRNAsTGFβ2 negatively correlated with TGFβ2 level (Figure 4C).