Table 1.

Clinicopathologic variables and the protein expression levels of SLUG and QKI in BC patients according to immunohistochemistry (n = 108)

Characteristic	n	SLUG expression		P valuea	QKI expression		P valuea
		Low	High		Low	High
Age (years)
≤ 51	48	25	23	0.281	17	31	0.028*
> 51	60	25	35		34	26
Tumor size (cm)
≤ 2	72	32	40	0.585	37	35	0.220
> 2	36	18	18		14	22
Lymph node status
Negative	67	30	37	0.685	31	36	0.800
Positive	41	20	21		20	21
ER status
Negative	21	7	14	0.184	9	12	0.655
Positive	87	43	44		42	45
PR status
Negative	44	15	29	0.035*	22	22	0.632
Positive	64	35	29		29	35
HER-2 statusb
Negative	63	23	40	0.066	36	27	0.006*
Positive	38	21	17		11	27
Ki67 index
≤ 14	63	32	31	0.267	24	21	0.282
> 14	45	18	27		27	36
Clinical TNM stage
I~II	90	43	47	0.490	44	46	0.438
III~IV	18	7	11		7	11
Histologic grade
I~II	85	41	44	0.437	43	42	0.178
III	3	9	14		8	15
Histologic type
IDC	84	32	52	0.001*	37	47	0.216
Other	24	18	6		14	10
E-cadherin
Negative	11	8	3	0.064	5	6	0.901
Positive	97	42	55		46	51
Distant metastasis
Negative	99	48	51	0.172	49	50	0.177
Positive	9	2	7		2	7

^aBy Chi-square test.

^bThere were 7 patients who had no results of HER2 FISH test and the IHC showed 2+ in history.

^*Statistically significant.