The NLR and C-reactive protein (CRP) level have been proven to be prognostic factors for NSCLC and other tumors, including hepatocellular carcinoma (Liao et al., 2018), colorectal cancer (Tsai et al., 2016), and esophageal cancer (Otowa et al., 2019). Here, CRP is linked to non-small cell lung carcinoma.