Studies have shown [77] that the serum level of MBP in the LCBM group was significantly higher than that in the lung cancer group, benign lung disease group, and healthy control group, and the difference between the lung cancer group and the benign lung disease group and the healthy control group was not statistically significant, and the serum level of MBP was independent of the size of the tumor. This evidence concerns the gene MBP and lung cancer.