ATP7A and breast cancer: To further explore the relationship between ATP7A and cisplatin resistance in breast cancer, first, we used the protein‐drug correlation analysis‐function of the MCLP dataset to identify the changing proteins in breast cancer cells due to cisplatin toxicity, results showed that the elevated genes were mainly involved in DNA repair and protein folding, and the decreased genes mainly participated in blocking apoptosis in cisplatin treatment (Figure 3B).