Skip to main content
. 2020 Aug 19;28:77–85. doi: 10.1016/j.jare.2020.08.009

Table 1.

Pathological and clinical characteristics of breast cancer samples in the training and validation sets.

Training set (n = 61)
Validation set (n = 299)
No IBC (%) IBC (%) p-valuea No IBC (%) IBC (%) p-valuea
Total 28 (100) 33 (100) 155 (100) 144 (100)
Age
≤50 4 (14.3) 16 (48.5) 0.0046 33 (21.3) 58 (40.3) 0.00036
>50 24 (85.7) 17 (51.5) 122 (78.7) 86 (59.7)
SBR histological gradeb
I 1 (3.6) 0 (0.0) 0.045c 19 (12.5) 2 (1.4) <104d
II 18 (64.3) 12 (37.5) 81 (53.3) 56 (40.0)
III 9 (32.1) 20 (62.5) 52 (34.2) 82 (58.6)
Stage
I 6 (21.4) 0 (0.0) 10 (6.5) 0 (0.0)
IIA 5 (17.9) 0 (0.0) 51 (32.9) 0 (0.0)
IIB 5 (17.9) 0 (0.0) 62 (40.0) 0 (0.0)
IIIA 5 (17.9) 0 (0.0) 30 (19.4) 0 (0.0)
IIIB 7 (25.0) 24 (72.7) 2 (1.3) 115 (79.9)
IV 0 (0.0) 9 (27.3) 0 (0.0) 29 (20.1)
ER status
Negative 6 (21.4) 21 (65.6) 0.00060c 44 (28.4) 77 (56.2) <104d
Positive 22 (78.6) 11 (34.4) 111 (71.6) 60 (43.8)
PR status
Negative 9 (32.1) 24 (75.0) 0.00087c 69 (44.5) 101 (74.3) <104e
Positive 19 (67.9) 8 (25.0) 86 (55.5) 35 (25.7)
ERBB2 status
Negative 23 (82.1) 17 (53.1) 0.017c 127 (81.9) 102 (73.4) 0.078
Positive 5 (17.9) 15 (46.9) 28 (18.1) 37 (26.6) (NS) f
Molecular subtypes
HR- ERBB2- 3 (10.7) 7 (21.9) 0.0048c 26 (16.8) 44 (32.6) <104h
HR- ERBB2+ 2 (2.7) 13 (40.6) 15 (9.7) 29 (21.5)
HR + ERBB2- 20 (71.4) 10 (31.3) 101 (65.2) 54 (40.0)
HR + ERBB2+ 3 (10.7) 2 (6.3) 13 (8.4) 8 (5.9)
Distant metastases
Yes 12 (42.9) 22 (66.7) 0.062 54 (34.8) 88 (61.1) <104
No 16 (57.1) 11 (33.3) (NS) 101 (65.2) 56 (38.9)

Abbreviations: ER: estrogen receptor alpha; PR: progesterone receptor; ERBB2: human epidermal growth factor receptor 2; HR: hormone receptor. Bold values are statistically significant (p-value < 0.05). a Chi2 Test; b Scarff-Bloom-Richardson classification; c Information available for 60 patients; d Information available for 292 patients; e Information available for 291 patients; f Information available for 294 patients; h Information available for 290 patients.