Table 1

Clinical and histopathological characteristics of cases included in the study

All cases (n = 212)
 Microarray (n = 80)

Characteristics
 Number
 Percent
 Number
 Percent
Age (year)



     <45
 24
 11.3
 6
 7.5
     45–55
 37
 17.5
 12
 15.0
     55–65
 38
 17.9
 20
 25.0
     65–75
 50
 23.6
 21
 26.3
     ≥75
 63
 29.7
 21
 26.3
Gender



     Female
 211
 99.5
 79
 98.8
     Male
 1
 0.5
 1
 1.2
Type



     Ductal
 132
 64.4
 51
 63.8
     Lobular
 53
 25.8
 22
 27.5
     Mucinous
 8
 3.9
 3
 3.8
     Medullary
 4
 2.0
 0
 0
     DCIS with microinvasion
 1
 0.5
 1
 1.3
     Tubulolobular
 2
 1.0
 2
 2.5
     Other
 5
 2.4
 1a
 1.3
     Unknown
 7
0
Tumor size



     pT1 (≤2 cm)
 71
 34.6
 20
 26.0
     pT2 (>2 ≤5 cm)
 112
 54.6
 44
 57.1
     pT3 (>5 cm)
 15
 7.3
 8
 10.4
     pT4 (infiltrating growth)
 7
 3.4
 5
 6.5
     Unknown
 7
3
Node status



     pN0 (negative)
 95
 44.8
 33
 41.3
     pN1 (1–3 positive)
 48
 22.6
 23
 28.8
     pN2–N3 (≥4 positive)
 33
 15.6
 12
 15.0
     pNX (Nodes not removed)
 36
 17.0
 12
 15.0
Grade



     1
 19
 9.0
 6
 7.5
     2
 141
 66.5
 53
 66.3
     3
 48
 22.6
 21
 26.3
     Unknown
 4
0
Estrogen receptor



     Positive
 109
 57.7
 45
 62.5
     Negative
 80
 42.3
 27
 37.5
     Unknown
 23
8
Progesteron receptor



     Positive
 130
 62.8
 51
 67.1
     Negative
 77
 37.2
 25
 32.9
     Unknown
 5
4
TP53 mutation



     Mutation
 48
 23.6
 20
 25.0
     Wild type
 155
 76.4
 60
 75.0
     Unknown
 9
0
Gene expression group



     Luminal A

23
 28.8
     Highly proliferating luminal

15
 18.8
     Normal-like

20
 25.0
     Basal-like

12
 15.0
     ERBB2+

10
 12.5
Adjuvant therapy



     Radiation therapy



          Yes
 60
 31.1
 25
 32.9
          No
 133
 68.9
 51
 67.1
          Unknown
 19
4
     Chemotherapyb



          Yes
 27
 12.9
 11
 14.1
          No
 182
 87.1
 67
 85.9
          Unknown
 3
2
     Hormonal treatmentc



          Yes
 53
 25.1
 25
 31.6
          No
 158
 74.9
 54
 68.4
          Unknown
 1


Recurrence (distant metastisis)



     Positive
 72
 34.1
 34
 42.5
     Negative
 139
 65.9
 46
 57.5
     Unknown
 1
0
Status



     Alive
 75
 37.5
 25
 32.5
     Dead of disease
 63
 31.5
 30
 39.0
     Dead of other cause
 60
 30.0
 20
 26.0
     Emmigrated
 2
 1.0
 2
 2.6
     Unknown
 12
3

aRare type with a metaplastic core and spindle cell component. bCMF × 9 (cyclophosphamide, methotrexate, 5-fluorouracil). cTamoxifen; 2 years. DCIS, ductal carcinoma in situ.

Langerød et al. Breast Cancer Research 2007 9:R30   doi:10.1186/bcr1675

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