Complete cohort | Tumor subcohort | ||||
---|---|---|---|---|---|
Individual variables | Total | n = 508 | Total | n = 129 | P |
n | % | n | % | ||
Age | |||||
> 35 years-old | 496 | 97.6 | 125 | 96.9 | 0.63 |
≤ 35 years-old | 12 | 2.4 | 4 | 3.1 | |
Family history | |||||
No | 400 | 87.7 | 85 | 85.9 | 0.61 |
Yes | 56 | 12.3 | 14 | 14.1 | |
Histological type | |||||
in situ | 35 | 7.0 | 2 | 1.6 | 0.018 |
Invasive | 462 | 93.0 | 127 | 98.4 | |
Tumor grade | |||||
Grade 1 | 60 | 12.6 | 10 | 7.8 | 0.14 |
Grade 2 or 3 | 416 | 87.4 | 117 | 90.7 | |
Tumor size | |||||
pT ≤ 2 cm | 226 | 49.1 | 42 | 33.1 | 0.001 |
pT > 2 cm | 234 | 50.9 | 85 | 66.9 | |
Lymph node status | |||||
pN0 or pN1 | 432 | 85.0 | 99 | 76.7 | 0.024 |
pN2 or pN3 | 76 | 15.0 | 30 | 23.3 | |
ER/PR status | |||||
Negative (both) | 76 | 15.5 | 27 | 20.9 | 0.14 |
Positive (either) | 414 | 84.5 | 102 | 79.1 | |
HER2 status | |||||
Negative | 378 | 83.8 | 102 | 81.0 | 0.45 |
Positive | 73 | 16.2 | 24 | 19.0 | |
Biological classification | |||||
Non triple negative | 440 | 90.9 | 112 | 86.8 | 0.17 |
Triple negative | 44 | 9.1 | 17 | 13.2 | |
EGFR genotypes | |||||
R497K | |||||
Arg/Arg | 308 | 61.0 | 82 | 64.1 | 0.380 |
Arg/Lys | 176 | 34.9 | 38 | 29.7 | |
Lys/Lys | 21 | 4.2 | 8 | 6.3 | |
(CA)n | |||||
Short/Short | 108 | 22.6 | 30 | 23.6 | 0.358 |
Short/Long | 230 | 48.2 | 68 | 53.5 | |
Long/Long | 139 | 29.1 | 29 | 22.8 |