Table 1.
Patient Characteristics, Tumor Stage, Tumor Grade, Tumor Type, and Biomarker Status (n = 106)
| Characteristic | Value |
|---|---|
| Age (y), median (range) | 67 (48–89) |
| ECOG performance status, n (%) | |
| 0 | 78 (74) |
| 1 | 22 (21) |
| 2 | 6 (6) |
| Ethnicity, n (%) | |
| Caucasian | 74 (70) |
| African American | 24 (23) |
| Hispanic | 6 (5) |
| Asian | 1 (1) |
| Unknown | 1 (1) |
| Clinical tumor size (cm), median (range) | 4.9 (2.3–12.0) |
| T stage, n (%) | |
| T2 | 56 (53) |
| T3 | 39 (37) |
| T4 | 11 (10) |
| N stage, n (%) | |
| N0 | 66 (62) |
| N1 | 34 (32) |
| N2 | 6 (6) |
| Tumor type, n (%) | |
| Ductal | 59 (56) |
| Lobular | 25 (24) |
| Mixed | 18 (17) |
| Other† | 4 (4) |
| Tumor grade, n (%) | |
| 1 | 21 (20) |
| 2 | 58 (55) |
| 3 | 27 (25) |
| Biomarker status, n (%) | |
| ER+PgR+ | 75 (71) |
| ER+PgR− | 30 (28) |
| ER−PgR+ | 1 (1) |
| HER2-negative | 97 (91.5) |
| HER2-positive | 8 (7.6) |
| HER2 unknown | 1 (0.9) |
Nine patients excluded from analysis because of withdrawal of consent (n = 7), ineligible (n = 1), and death unrelated to disease (n = 1).
†
Mucinous, 2 (2%); tubular, 1 (1%); papillary, 1 (1%).
ECOG, Eastern Cooperative Oncology Group performance status; ER, estrogen receptor; PgR, progesterone receptor.