Table 1.

CXCL12 and CXCR4 expression in 182 patients with breast cancer

Characteristics	Number	CXCL12 expression		p value	CXCR4 expression		p value
		Positive	Negative		Positive	Negative
		n = 71	n = 111		n = 83	n = 99
Age
<45 years	101	40	61	χ2 = 0.03	50	51	χ2 = 1.39
≥45 years	81	31	50	p > 0.05	33	48	p > 0.05
Menopausal status
Premenopausal	135	50	85	χ2 = 0.85	60	75	χ2 = 0.28
Postmenopausal	47	21	26	p > 0.05	23	24	p > 0.05
Tumor size
<2 cm	83	36	47	χ2 = 1.22	43	40	χ2 = 2.37
≥2 cm	99	35	6	p > 0.05	40	59	0.01 < p < 0.05
Lymph node metastasis
Negative	112	53	59	χ2 = 0.35	45	67	χ2 = 3.21
Positive	70	30	40	p > 0.05	38	32	p > 0.05
Tumor stage
I + II	140	49	91	χ2 = 4.10	58	82	χ2 = 4.26
III + IV	42	22	20	0.01 < p < 0.05	25	17	0.01 < p < 0.05