CD274 and non-small cell lung carcinoma: The results of our present study showed that the co-expression rates of Siglec-15 and PD-L1 are 6.67% in NSCLC, which are similar to those reported by Wang et al. [13], in which they reported that Siglec-15 and PD-L1 were positive for both markers in only approximately 3% of specimens in NSCLC.