Table 3. KI-67 protein expression in pretreatment and post-treatment biopsies in non-pCR stage 2 OTSCC.

Agea	Sex	Pretreatment biopsy (%)	Post-treatment biopsyb (%)	Δ change	Recurrence	Survival
58	F	58	27	31	None	Alive
33	M	81	18	63	Locoregional	Dead
38	F	53	24	29	None	Alive
54	F	50	41	9	Locoregional	Dead
53	M	43	31	12	Locoregional	Dead
32	F	68	60	8	None	Alive
58	M	49	35	14	Locoregional	Alive
61	M	55	54	1	Locoregional	Dead
21	M	58	47	11	Locoregional	Dead
57	M	66	28	38	None	Alive
75	F	72	53	19	None	Alive
P-value				P=0.001
Mean		59	38	21	NA	NA
s.d.		11.3	13.9	17.8

^aPatients received preoperative radiation (50–68 Gy).

^bNon-pCR (incomplete pathological remission).