In OS, the pCR group in hormone receptor +HER2− BC did not experience any death events, and therefore we calculated HR compared with RPCB class I. In hormone receptor+HER2− BC, the HR of RPCB class II was 1.81 (95% CI: 0.16, 20.04) and 43.89 of RPCB class III (95% CI: 4.69, 242.42) (p <0.001) (Figure 4A). Here, NR4A1 is linked to breast cancer.