BMP5 and lung adenocarcinoma: To better understand the clinical outcomes of lung adenocarcinoma in low- and high-risk groups, we systematically analyzed the correlation between BMP5 in the risk model and the clinicopathologic features including age, gender, smoking, stage, T-stage, N-stage, and M-stage and found a relationship between the BMP5 risk model and stage (p < 0.001) and N-stage (p < 0.001) in lung adenocarcinoma (Figure 4C).