Table 1.
Characteristics | Entire cohort (N=240) |
Training cohort (N=171) | P value | Testing cohort (N=69) | P value | ||
Non-response (N=110) |
Response (N=61) |
Non-response (N=45) |
Response (N=24) |
||||
Age | 0.294 | 0.139 | |||||
Mean±SD | 48.36±10.38 | 47.56±10.82 | 49.32±9.82 | 47.49±9.79 | 51.29±10.53 | ||
Age group | 0.398 | 0.713 | |||||
<40 | 53 (22.1) | 27 (24.5) | 13 (21.3) | 9 (20.0) | 4 (16.7) | ||
40–50 | 77 (32.1) | 37 (33.6) | 16 (26.2) | 17 (37.8) | 7 (29.2) | ||
≥50 | 110 (45.8) | 46 (41.8) | 32 (52.5) | 19 (42.2) | 13 (54.2) | ||
BMI (kg/m²) | 0.946 | 0.818 | |||||
Mean±SD | 22.91±3.23 | 23.01±3.36 | 22.98±3.36 | 22.76±3.29 | 22.59±2.27 | ||
BMI group | 0.788 | 0.569 | |||||
<18.5 | 22 (9.2) | 10 (9.1) | 7 (11.5) | 4 (8.9) | 1 (4.2) | ||
18.5–24 | 133 (55.4) | 59 (53.6) | 34 (55.7) | 24 (53.3) | 16 (66.7) | ||
>24 | 85 (35.4) | 41 (37.3) | 20 (32.8) | 17 (37.8) | 7 (29.2) | ||
ECOG performance status | 0.185 | 1.000 | |||||
0–1 | 218 (90.8) | 98 (89.1) | 58 (95.1) | 40 (88.9) | 22 (91.7) | ||
≥2 | 22 (9.2) | 12 (10.9) | 3 (4.9) | 5 (11.1) | 2 (8.3) | ||
Menopausal status | 0.470 | 0.285 | |||||
Premenopause | 82 (34.2) | 32 (29.1) | 21 (34.4) | 21 (46.7) | 8 (33.3) | ||
Postmenopause | 158 (65.8) | 78 (70.9) | 40 (65.6) | 24 (53.3) | 16 (66.7) | ||
Prior operation | 0.051 | 0.032 | |||||
Surgery | 183 (76.2) | 93 (84.5) | 44 (72.1) | 34 (75.6) | 12 (50.0) | ||
Without surgery | 57 (23.8) | 17 (15.5) | 17 (27.9) | 11 (24.4) | 12 (50.00) | ||
Number of lines of prior therapies in the advanced setting | 0.020 | 0.032 | |||||
1 | 82 (34.2) | 31 (28.2) | 28 (45.9) | 11 (24.4) | 12 (50.0) | ||
≥2 | 158 (65.8) | 79 (71.8) | 33 (54.1) | 34 (75.6) | 12 (50.0) | ||
ER status | 0.155 | 0.781 | |||||
Negative | 202 (84.2) | 88 (80.0) | 54 (88.5) | 40 (88.9) | 20 (83.3) | ||
Positive | 38 (15.8) | 22 (20.0) | 7 (11.5) | 5 (11.1) | 4 (16.7) | ||
PR status | 0.135 | 1.000 | |||||
Negative | 215 (89.6) | 103 (93.6) | 53 (86.9) | 38 (84.4) | 21 (87.5) | ||
Positive | 25 (10.4) | 7 (6.4) | 8 (13.1) | 7 (15.6) | 3 (12.5) | ||
HER2 status | 0.468 | 0.652 | |||||
Negative | 225 (93.8) | 102 (92.7) | 59 (96.7) | 41 (91.1) | 23 (95.8) | ||
Positive | 15 (6.2) | 8 (7.3) | 2 (3.3) | 4 (8.9) | 1 (4.2) | ||
Molecular subtype | 0.665 | 0.915 | |||||
HR+/HER2− | 43 (17.9) | 18 (16.4) | 10 (16.4) | 10 (22.2) | 5 (20.8) | ||
HER2+ | 15 (6.3) | 8 (7.3) | 2 (3.3) | 4 (8.9) | 1 (4.2) | ||
TNBC | 182 (75.8) | 84 (76.4) | 49 (80.3) | 31 (68.9) | 18 (75.0) | ||
Molecular subtype group | 0.550 | 0.594 | |||||
Non-TNBC | 58 (24.2) | 26 (23.6) | 12 (19.7) | 14 (31.1) | 6 (25.0) | ||
TNBC | 182 (75.8) | 84 (76.4) | 49 (80.3) | 31 (68.9) | 18 (75.0) | ||
Ki67 | 0.708 | 1.000 | |||||
≤20 | 18 (7.5) | 6 (5.5) | 5 (8.2) | 5 (11.1) | 2 (8.3) | ||
>20 | 222 (92.5) | 104 (94.5) | 56 (91.8) | 40 (88.9) | 22 (91.7) | ||
dNLR* | 0.172 | 0.964 | |||||
<2.38 | 104 (43.3) | 44 (40.0) | 31 (50.8) | 19 (42.2) | 10 (41.7) | ||
≥2.38 | 136 (56.7) | 66 (60.0) | 30 (49.2) | 26 (57.8) | 14 (58.3) | ||
LDH | 0.197 | ||||||
≤250 | 141 (58.8) | 61 (55.5) | 40 (65.6) | 25 (55.6) | 15 (62.5) | 0.578 | |
>250 | 99 (41.2) | 49 (44.5) | 21 (34.4) | 20 (44.4) | 9 (37.5) | ||
ALB | 0.220 | 0.881 | |||||
<40 | 96 (40.0) | 54 (49.1) | 24 (39.3) | 12 (26.7) | 6 (25.0) | ||
≥40 | 144 (60.0) | 56 (50.9) | 37 (60.7) | 33 (73.3) | 18 (75.0) | ||
Combined immunotherapy regimen | 0.530 | 0.112 | |||||
Immunotherapy+chemotherapy | 127 (52.9) | 56 (50.9) | 28 (45.9) | 25 (55.6) | 18 (75.0) | ||
Immunotherapy+antiangiogenic therapy±chemotherapy | 113 (47.1) | 54 (49.1) | 33 (54.1) | 20 (44.4) | 6 (25.0) | ||
Visceral metastasis | 0.016 | 0.753 | |||||
No | 104 (43.3) | 42 (38.2) | 35 (57.4) | 17 (37.8) | 10 (41.7) | ||
Yes | 136 (56.7) | 68 (61.8) | 26 (42.6) | 28 (62.2) | 14 (58.3) | ||
Number of metastatic sites | 0.001 | 0.356 | |||||
1, 2 | 122 (50.8) | 46 (41.8) | 41 (67.2) | 21 (46.7) | 14 (58.3) | ||
≥3 | 118 (49.2) | 64 (58.2) | 20 (32.8) | 24 (53.3) | 10 (41.7) |
Data were presented as number of patients; data in parentheses were percentages unless otherwise noted*value refer to the optimal threshold of dNLR using the maximum Youden Index method
ALB, serum albumin; dNLR, derived neutrophil-to-lymphocyte ratio; ECOG, Eastern Cooperative Oncology Group; ER, estrogen receptor; HER2, human epidermal growth factor receptor 2; HR, hormone receptor; LDH, lactate dehydrogenase; PR, progesterone receptor; TNBC, triple-negative breast cancer.