Research Article

Prognostic Impact of Adenosine Receptor 2 (A2aR) and Programmed Cell Death Ligand 1 (PD-L1) Expression in Colorectal Cancer

Table 4

Univariate analysis of clinicopathologic factors for overall survival (OS) in 204 colorectal cancer patients (p-value was calculated by Kaplan-Meier method and log-rank test).

CharacteristicN=204No. of deathNo. of alivep-value

Age(years)1.7160.190
 ≤60761363
 >601283296
Gender0.2540.614
 Male1242599
 Female802060
Location0.0380.845
 colon13229103
 rectum721656
Size (cm)1.9970.158
 ≤5.01041985
 >5.01002674
Differentiation0.8280.661
 Well18513
 Moderate16437127
 Poor22319
Depth of tumor invasion5.0280.025
 T1/T240436
 T3/T416441123
Lymph node metastasis18.061<0.001
 No11313100
 Yes913259
Distant metastasis140.763<0.001
 No18531154
 Yes19145
TNM stage31.582<0.001
 I/II106898
 III/IV983761
PD-L19.3290.002
 Negative12017103
 Positive842856
A2aR5.7350.017
 Negative961482
 Positive1083177

Notes: depth of tumor invasion (p=0.025), lymph node metastasis (p<0.001), distant metastasis (p<0.001), tumor TNM stage (p<0.001), PD-L1-positive status in tumor (p=0.002), and A2aR-positive status in tumor (p=0.017) were significantly correlated to OS (p<0.05).