CD274 and neoplasm: When there is no expression of PD‐L1 in tumor cells, there is no significant difference in MSI status whether or not it is expressed in interstitial immune cells.28 In this study, the expression of PD‐L1 in MSI‐H group was obviously higher than that in MSI‐L/MSS group, which further confirmed that MSI status was related to the expression of PD‐L1.