As we know, Ki67 is a proliferation marker that provides a fast method to assess the proportion of proliferating cells in a tumor.48 Previous studies have shown that chemotherapy is more effective in patients with higher Ki67 levels;49 however, there was no significant correlation between Ki67 and chemotherapy efficacy in the present study, but this does not mean that Ki67 status is not related to NCT efficacy. Here, MKI67 is linked to neoplasm.