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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2017 Apr 26;26(7):1139–1145. doi: 10.1158/1055-9965.EPI-17-0120

Table 2.

Patient Cohort Summary by PD-L1(+) Circulating Cells Associated with Malignancy (CCAM) Incidence.

Characteristic No detected PD-L1(+) CCAMs >0–1.1 PD-L1(+) CCAMs/mL >1.1 PD-L1(+) CCAMs/mL p-value
Lung Cancer Cohort 86 12 14

Age, median (IQR), years 67 (60–74) 68.5 (61.75–75.75) 70 (59–76.5) 0.851

Tumor AJCC Stage
I 42 7 2 0.0265
II 12 2 2
III 22 0 4
IV 10 3 6

Tumor Histological Type
Adenocarcinoma 62 7 11 0.918
Squamous Cell Carcinoma 14 3 2
Other 10 2 1

Clinical Site
Yale 61 8 3 0.00743
Billings 19 2 8
UCSD 6 2 3

Unhealthy Controls 16 4 0

CCAM = Circulating Cells Associated with Malignancy

IQR = Interquartile range

AJCC = American Joint Committee on Cancer