However, by plotting the survival curves, we could roughly see that the overall survival (OS) of the high CTSG expression group was slightly longer than that of the low CTSG expression group [HR(High) = 0.48], which was consistent with the trend that the overall survival (OS) of patients with low CTSG expression is significantly shorter than that of those with high CTSG expression in NSCLC retrieved by our big data (Fig. 5C). Here, CTSG is linked to non-small cell lung carcinoma.