Table 4. Clinicopathological parameters of ERBB2-overexpressing ductal breast tumors and nuclear KLF6.

Parameter	Subcategory	Positive KLF6 (%)	Negative KLF6 (%)	Number of Cases	Chi-square p value
Size	<2.0 cm	10 (91)	1 (9)	11	0.385
	2.1–5.0 cm	8 (67)	4 (33)	12
	>5.1 cm	1 (50)	1 (50)	2
	ND	2 (100)	0 (0.0)	2
Stage	I	6 (86)	1 (14)	7	0.694
	II	13 (76)	4 (24)	17
	III	1 (50)	1 (50)	2
	IV	1 (100)	0 (0.0)	1
Histological grade	1	7 (100)	0 (0.0)	7	0.046
	2	9 (60)	6 (40)	15
	3	5 (100)	0 (0.0)	5
Lymph nodes	Positive	7 (60)	1 (40)		0.177
	Negative	3 (50)	3 (50)
	ND	11 (75)	2 (25)
Total tissues		21 (78)	6 (22)	27

ND: No determined.