PD-L1 mRNA expression in plasma-derived exosomes is associated with response to anti-PD-1 antibodies in melanoma and NSCLC

摘要

Background: PD-L1 expression in tumour tissues is widely used to select patients to receive anti-PD-1/PD-L1 antibodies, but data are lacking on the correlation of plasma PD-L1 levels with the effect of treatments.