Six patients with high expression of FDX1 in colon cancer were screened, and Western blot results showed that FDX1 expression in cancer tissues were significantly higher than that in paracancerous tissues; compared with the gray value, cancer tissue 4.78 ± 2.65 was significantly higher than paracancerous 1.0 (P < 0.01, Fig. 7). The gene discussed is FDX1; the disease is malignant colon neoplasm.