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. 2022 Mar 1;5(3):e220587. doi: 10.1001/jamanetworkopen.2022.0587

Table. Characteristics of Patients.

Characteristic Patients, No. (%) (N = 179)
Sex
Male 148 (82.7)
Female 31 (17.3)
Age, median (range), y 46 (22-71)
ECOG score
0 63 (35.2)
1 116 (64.8)
Lines of prior therapy
1 line 89 (49.7)
≥2 lines 90 (50.3)
PD-L1 statusa
Negative 126 (70.4)
Positive 45 (25.1)
NA 8 (4.5)
TMB (mutations per megabase)b
<0.95 82 (45.8)
≥0.95 82 (45.8)
NA 15 (8.4)

Abbreviations: ECOG, Eastern Cooperative Oncology Group; NA, not applicable; PD-L1, programmed death-ligand 1; TMB, tumor mutation burden.

a

Positive is defined as 1% or more of tumor cells expressing PD-L1 by SP142 immunohistochemistry staining.

b

Cutoff value is defined as the median value of TMB.