TABLE 1.

Patient and tumor characteristics of 385 patients with triple-negative breast cancer treated between 2000 and 2008

Characteristic	n (%)
Age (years)
< 50	178 (46)
≥50	207 (54)
Race
Caucasian	238 (62)
African–American	138 (36)
Other	9 (2)
Clinical T stage
T1	122 (32)
T2	157 (41)
T3	33 (9)
T4	29 (7)
Other	44 (11)
Histology
Invasive ductal	310 (80)
Invasive lobular	14 (3)
Mixed/others	61 (16)
Nuclear grade
Grade 1	4 (1)
Grade 2	40 (10)
Grade 3	330 (85)
Unknown	11 (3)
Clinical N status
N0	226 (59)
N1	93 (24)
N2	12 (3)
N3	15 (4)
Unknown	39 (10)
Clinical stage
1	91 (24)
2A	122 (32)
2B	54 (13)
3	60 (16)
Unknown	58 (15)