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. 2023 May 22;11(5):e006514. doi: 10.1136/jitc-2022-006514

Table 1.

Demographics and clinicopathologic characteristics of the training cohort and the testing cohort

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.