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Table 1 Main characteristics of patients

From: Genomic aberrations in young and elderly  breast cancer patients

Characteristic

The Cancer Genome Atlas (N = 780)

 

≤45 years of age

46–69 years of age

≥70 years of age

P value

Number

125

486

169

 

Tumor size

    

 ≤2 cm

30 (24 %)

135 (28 %)

43 (26 %)

0.64

 >2 cm

95 (76 %)

351 (72 %)

126 (74 %)

 

Nodal status

    

 Negative

47 (38 %)

241 (49 %)

83 (49 %)

0.05

 Positive

78 (62 %)

245 (51 %)

86 (51 %)

 

Histology

    

 Ductal

116 (93 %)

371 (76 %)

121 (71 %)

<0.001

 Lobular

9 (7 %)

95 (24 %)

48 (29 %)

 

PAM50 subtype

    

 Luminal-A

44 (35 %)

200 (41 %)

70 (41 %)

0.16

 Luminal-B

41 (33 %)

140 (29 %)

64 (38 %)

 

 HER2

15 (12 %)

57 (12 %)

12 (7 %)

 

 Basal

25 (20 %)

89 (18 %)

23 (14 %)