Fig. 4

DPS levels was negatively correlated with the treatment response of NAC. A Comparison of the DPS levels between Non-NAC and NAC treatment groups; B–D The relationship between treatment response and DPS levels; E Kaplan–Meier survival analysis between patients with low-DPS after NAC and those with high-DPS after NAC treatment. *p < 0.05, ****p < 0.0001. TRG, tissue regression grade; NAC, neoadjuvant chemotherapy