Table I.
Clinical characteristics of breast cancer patients included in The Cancer Genome Atlas database.
| Characteristic | Value | Percentage (%) |
|---|---|---|
| Age at diagnosis (years) | 57.98 | − |
| Follow up (years)a | 1.65 | − |
| Ethnicity | ||
| Caucasian | 757 | 60.99 |
| Black or African American | 183 | 14.75 |
| Asian | 61 | 4.92 |
| American Indian or Alaska native | 1 | 0.08 |
| NA | 239 | 19.26 |
| Survival | ||
| Alive at last follow-up or succumbed to unrelated cause | 816 | 65.75 |
| Disease-specific mortality | 135 | 10.88 |
| NA | 290 | 23.37 |
| Tumor grade (Nottingham) (37) | ||
| I | 133 | 10.72 |
| II | 446 | 35.94 |
| III | 175 | 14.10 |
| IV | 15 | 1.21 |
| X | 10 | 0.81 |
| NA | 462 | 37.23 |
| Subtype | ||
| Normal | 113 | 9.11 |
| Luminal A | 434 | 34.97 |
| Luminal B | 194 | 15.63 |
| HER2-enriched | 67 | 5.40 |
| Basal-like | 142 | 11.44 |
| Not classified | 291 | 23.45 |
a
Presented as the median. NA, not available; HER2, human epidermal growth factor receptor 2.