Table 1.

Expression of CLDN2 and CLDN6 clinicopathologic characteristics in breast carcinoma patients

Item	n	CLDN2 (+)	CLDN2 (-)	χ2	P	n	CLDN6 (+)	CLDN6 (-)	χ2	P
Breast carcinoma tissue	86	26	60	8.673	< 0.01	86	30	56	8.493	< 0.01
Histologically non-neoplastic tissue	86	52	34			86	58	28
Age (year)
≤ 60	54	15	39	0.116	0.764*	54	18	46	2.422	0.162*
> 60	32	11	21			32	12	20
Histologic grade
Well-differentiated	48	14	34	0.324	0.552*	48	16	32	1.276	0.231*
Moderately and poorly differentiated	38	12	26			38	14	24
Distant metastasis
+	47	10	31	6.827	< 0.01	47	7	40	9.276	< 0.01
-	39	16	23			39	23	16
Ki67
+	51	17	34	2.234	0.158*	51	18	33	0.186	0.726*
-	35	9	26			35	12	23

^*No statistical significance.