The pdl1 expression cps score is the total number of tumor cells, lymphocytes, polyester cells in pdl1 and the proportion of tumor cells in the sample.
The cps score is a scoring method for tumor immunity and an evaluation of the intensity of pdl1 staining, which is mostly used before drug treatment, and mainly refers to the ratio of the total number of tumor cells, lymphocytes, and polyester cells in the positive pdl1 staining to the total number of surviving tumor cells in the sample.
Generally speaking, if the cps score is higher, it means that the effect of immunotherapy drugs is better, and the cps score of some patients can reach more than 90%; if the cps score is lower, it means that the overall effect of immunotherapy is poor, and it is not recommended to take this method of treatment.