TP53 and breast neoplasm: In TNBC, clinical N stage (p<0.001), histologic grade (p=0.003), p53 expression status (p=0.041), presence of lymphovascular invasion (p=0.022), NAT regimen (p = 0.002), NAT cycle duration (p=0.008), and postoperative pCR in the primary breast tumor (p<0.001) emerged as independent predictors of ypN0 post-NAT (Supplementary Table 3).