The results revealed that serum miR‐27a‐3p in children with BA was positively correlated with IL‐17, IL‐6, TNF‐α, and EOS (p < 0.0001, r = 0.3791; p < 0.0001, r = 0.4232; p < 0.0001, r = 0.4473; p < 0.0001, r = 0.4525) (Figure 2A–D); serum ATF3 mRNA levels in BA children were negatively correlated with these factors (p < 0.0001, r = −0.5333; p < 0.0001, r = −0.5242; p < 0.0001, r = −0.5521; p < 0.0001, r = −0.5025) (Figure 2E–H). Here, ATF3 is linked to breast angiosarcoma.