As displayed in Table 3 and Figure 4, the sensitivities of five thyroid function markers (TSH, TT3, TT4, FT3, and FT4) were 59%, 43.41%, 39%, 75.6%, and 66.83%, respectively, and the sensitivities of the four traditional lung cancer markers (CEA, NSE, SCC, and CYF) were 73%, 52.2%, 34.6%, and 66.2%, respectively. Here, ENO2 is linked to lung cancer.