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. 2021 Jan 27;38:88. doi: 10.11604/pamj.2021.38.88.21370

Table 1.

distribution of pathologic features and molecular phenotypes of general population by age groups

Histological/phenotypes characteristics Number of patients (%) <40 (40-54) ≥55 P-Value
Histological types Ductal 877 (79.4%) 154 (81.9%) 402 (80.7%) 321 (76.6%) 0.011
Lobular 181 (16.4%) 20 (10.6%) 82 (16.5%) 79 (18.9%)
Other 47 (4.2%) 14 (7.4%) 14 (2.8%) 19 (4.5%)
Inflammatory breast cancer IBC 47 (5.3%) 6 (3.8%) 21 (5.4%) 20 (6%) 0.616
NIBC 834 (94.7%) 150 (96.2) 370 (94.6 %) 176 (%)
TNM staging pT1 114 (13%) 19 (12.2%) 51 (13%) 44 (13%) 0.768
pT2 449 (51%) 75 (48.5%) 198 (50.4%) 176 (52.4%)
pT3 142 (16%) 32 (20.6%) 61 (15.5%) 49 (14.6%)
pT4 179 (20%) 29 (18.7%) 83 (21.1%) 67 (20%)
M1 at the moment of diagnostic 82 (7.2%) 15 (7.6%) 38 (7.4%) 29 (6.6%) 0.007
Nodal status N- 350 (35.3%) 61 (36.1%) 143 (32.4%) 146 (38.3%) 0.206
N+ 641 (64.7%) 108 (63.9%) 298 (67.6%) 235 (61.7%)
SBR grade I 38 (3.6%) 10 (5.6%) 14 (2.9%) 14 (3.5%) 0.269
II 610 (57.5%) 98 (54.5%) 283 (59.2%) 229 (57%)
III 412 (38.9%) 72 (40%) 181 (37.9%) 159 (39.5%)
Hormone receptors status HR- 417 (39.1%) 60 (33.1%) 182 (37.7%) 175 (43.5%) 0.040
HR+ 649 (60.9%) 121 (66.9%) 301 (62.3%) 227 (56.5%)
HER2 status HER2- 714 (67.6%) 123 (68%) 313 (65.5%) 278 (69.8%) 0.358
HER2+ 343 (32.4%) 58 (32%) 165 (34.5%) 120 (30.2%)
Ki 67 status Ki 67 <14 230 (40%) 41 (45.1%) 93 (45.8%) 96 (45.1%) 0.986
Ki 67 ≥ 14 277 (60%) 50 (54.9%) 110 (54.2%) 117 (54.9%)
Molecular phenotypes Luminal A 337 (31.6%) 69 (38.1%) 156 (32.2%) 112 (27.9%) 0.025
Luminal B 313 (29.4%) 52 (28.7%) 146 (30.2%) 115 (28.7%)
HER2+ 130 (12%) 18 (9.9%) 68 (14%) 44 (11%)
TNBC 286 (27%) 42 (23.2%) 114 (23.6%) 130 (32.4%)