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Table 3 Comparison of PD-L1 expression levels within SQCC study group

From: PD-L1 expression and tumor mutational burden status for prediction of response to chemotherapy and targeted therapy in non-small cell lung cancer

Characteristic PD-L1 expression
TC IC
Negative (n, %) Any+ (n, %) P value Negative (n, %) Any+ (n, %) P value
Age (years) 0.579   0.011
 <60 12 50% 12 50%   15 63% 9 38%  
 ≥60 11 41% 16 59% 7 26% 20 74%
Sex 1   0.737
 Male 18 45% 22 55%   18 45% 22 55%  
 Female 5 45% 6 55% 4 36% 7 64%
Smoking status 0.761   0.214
 Never smoker 17 47% 19 53%   18 50% 18 50%  
 Smoker 6 40% 9 60% 4 27% 11 73%
Pathologic stage 1   0.579
 IIIB 9 43% 12 57%   8 38% 13 62%  
 IV 14 47% 16 53% 14 47% 16 53%
Mutation status \   \
 EGFR mutant 1 50% 1 50%   1 50% 1 50%  
 KRAS mutant 0 0% 2 100% 1 50% 1 50%
 Other 22 47% 25 53% 20 43% 27 57%