Can Ki-67 Play a Role in Prediction of Breast Cancer Patients' Response to Neoadjuvant Chemotherapy?

Table 3

Therapeutical aspects as a function of Ki-67.

Parameter	Ki-67 ≤15%	Ki-67 16–50%	Ki-67 >50%	𝑃
Number of patients	22	37	18
Initial sonographic tumor diameter (mm)	29.3 ± 14.0	32.2 ± 15.0	31.1 ± 10.4	0.738
Postoperative histologic tumor diameter (mm)	14.6 ± 9.9	18.6 ± 21.7	11.0 ± 15.3	0.312
Change (% from initial tumor size)	57.9 ± 44.9	52.0 ± 66.2	39.4 ± 50.7	0.590
Sonographic change (% from initial tumor size)	47.6 ± 22.2	38.2 ± 32.8	34.4 ± 37.0	0.373
Grade of regression (Sinn)	1.7 ± 1.1	2.2 ± 1.2	2.1 ± 1.4	0.310
Number of patients with pCR	4 (18.1%)	10 (27%)	6 (33.3%)