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 %) |