The severity of DM needs to be assessed before surgery, and if the respiratory muscle symptoms of DM are not eligible for surgical treatment, it is recommended to treat the symptoms of DM first and observe whether neoadjuvant chemotherapy can be used at the same time to reduce the tumor volume and create the possibility of radical breast cancer surgery or breast‐conserving surgery; very few published reports (just two articles reporting only one case respectively) have shown that anti‐TIF1‐γ antibody‐positive and triple‐negative breast cancer occur at the same time. Here, TRIM33 is linked to breast carcinoma.