We found that stromal PD-L2 was an independent and favorable factor for overall and cancer progression survival (OS hazards ratio: 0.722; 95% confidence interval: 0.528-0.986; P=0.041; DFS hazards ratio: 0.744; 95% confidence interval: 0.559-0.99; P=0.042) (Table 4). This evidence concerns the gene PDCD1LG2 and cancer.