Table 3.

Grading system of pathological response Miller and Payne.

Grades	Classification definition
G1	Infiltrating cancer cells did not change or only individual cancer cells changed, but the total number of cancer cells did not decrease
G2	Infiltrated cancer cells decreased slightly, but the total number was still high, and cancer cells decreased by no more than 30%
G3	Infiltrating cancer cells reduced by 30 to 90%
G4	Infiltrating cancer cells significantly reduced by more than 90%, leaving only scattered small-cancerous cells or individual cancer cells
G5	Tumor tumors have no infiltrating cancer cells, but there may be ductal carcinoma in situ