Inhibitors of the receptor tyrosine kinase c-MET have been shown to inhibit neutrophil recruitment to tumours, with some concerned this may be detrimental,15 but others hopeful of benefit.54 As previously mentioned, neutrophils have been shown to express PD-L1, and therefore immune checkpoint inhibitors may have a role in reducing neutrophil suppression of T cell responses. This evidence concerns the gene MET and neoplasm.