Clinical Study

Upregulated Expression of Indoleamine 2, 3-Dioxygenase in Primary Breast Cancer Correlates with Increase of Infiltrated Regulatory T Cells In Situ and Lymph Node Metastasis

Table 2

The relationship between IDO expression and clinical pathological indexes.

IDO+SI (%) value

Age (years)
 <601812.30 ± 8.350.465
 ≥60815.11 ± 10.75

Menstrual status
 Postmenopausal1415.02 ± 10.930.257
 Nonpostmenopausal1210.83 ± 5.42

Tumor diameter (cm)
 ≤2711.89 ± 6.550.211
 2~51513.43 ± 6.88
 >5414.38 ± 7.69

Clinical stage
 I28.95 ± 3.790.034
 II2011.72 ± 6.48
 III422.47 ± 10.79*

Pathological type
 Invasive Ductal Ca.2113.62 ± 9.390.223
 Others511.23 ± 6.25

histological grade
 I810.73 ± 6.450.324
 II1012.29 ± 7.28
 III813.71 ± 5.96

TDLNs metastasis
 pN0610.29 ± 5.230.046
 pN11411.42 ± 8.49
 pN2415.98 ± 7.14
 pN3228.35 ± 14.78*

ER status
  (−)1215.76 ± 10.580.394
  (+)1412.70 ± 8.83

PR status
  (−)1313.18 ± 8.020.624
  (+)1315.29 ± 9.31

Her-2 status
  (−)1811.69 ± 8.460.457
  (+)814.34 ± 10.23

*Statistically significant difference between the samples of advanced stage (stage III) and earlier stage (stage II and stage I), as well as the significant difference between the samples with more extensive LN metastasis (pN3) and less or no LN metastasis (pN0-2).