TRIM21 and breast cancer: BC‐GenExMiner v5.1 revealed that TNBC patients with low TRIM21 expression had short DMFS (p = .0021, HR: 0.71, 95%CI: 0.57–0.88) (Figure 5F), DFS (p = .0024, HR: 0.78, 95%CI: 0.66–0.91) (Figure 5G), OS (HR: 0.69, 95%CI: 0.50–0.94, p = .0192) (Figure 5H) and RFS (log‐rank P: 0.00098, HR: 0.26, 95%CI: 0.11–0.61) (Figure 1I).