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. 2024 Feb 29;36(1):55–65. doi: 10.21147/j.issn.1000-9604.2024.01.06

Table 1. Baseline characteristics of included patients (N=78).

Characteristics Patients [n (%)]
ECOG PS, Eastern Cooperative Oncology Group performance status; HR, hormone receptor; TOP2A, topoisomerase 2 alpha; IHC, immunohistochemistry.
Age (year) [median (range)] 49 (29−70)
 <40 18 (23.1)
 40−50 27 (34.6)
 >50 33 (42.3)
HR status
 Positive 50 (64.1)
 Negative 28 (35.9)
ECOG PS 0 78 (100)
Menopausal status
 Premenopausal 49 (62.8)
 Postmenopausal 29 (37.2)
Histological type
 Ductal carcinoma 76 (97.4)
 Lobular carcinoma 2 (2.6)
Histological grade
 II 26 (33.3)
 II−III 3 (3.8)
 III 18 (23.1)
 Unknown 31 (39.7)
Lymph node status
 Positive 55 (70.5)
 Negative 23 (29.5)
Clinical stage
 Stage II 55 (70.5)
 Stage III 23 (29.5)
T stage
 T1 3 (3.8)
 T2 49 (62.8)
 T3 23 (29.5)
 T4 3 (3.8)
N stage
 N0 23 (29.5)
 N1 45 (57.7)
 N2 7 (9.0)
 N3 3 (3.8)
TOP2A IHC expression
 Negative 1 (1.3)
 <15% 14 (17.9)
 15%−30% 31 (39.7)
 >30% 23 (29.5)
 Unknown 9 (11.5)