KLK12 and breast cancer: A significant association between KLK12 status and the better prognosis was also observed in the cases positive for lymph node metastasis (p = 0.0032 for metastasis-free survival (Figure 3E) and p = 0.040 for breast cancer-specific survival) or cases that received chemotherapy (p = 0.0048 for metastasis-free survival (Figure 3F) and p = 0.028 for breast cancer-specific survival).