Evaluating the Feasibility of Performing Window of Opportunity Trials in Breast Cancer

Table 1

Clinical and pathological characteristics of patients who enrolled in the study.

Patient and surgical specimen tumor characteristics
Age (years), mean (SD)	66.3 (10)
Age range (years)	52–89
Invasive disease, (%)
Invasive, ductal	16/20 (80%)
Invasive, lobular	2/20 (10%)
Mixed invasive, ductal, and lobular	2/20 (10%)
Surgical tumor stage, (%)
T1	5/20 (25%)
T2	10/20 (50%)
T3	5/20 (25%)
Surgical nodal stage, (%)
N0	10/20 (50%)
N1	3/20 (15%)
N2	5/20 (25%)
N3	2/20 (10%)
ER, (%)
Positive	20/20 (100%)
Negative	0/20 (0%)
PR, (%)
Positive	17/20 (85%)
Negative	3/20 (15%)
HER2, (%)
Positive	4/20 (20%)
Negative	18/20 (80%)
Type of breast surgery
Lumpectomy	11/20 (55%)
Mastectomy	9/20 (45%)