The expression of SREBF1 and FASN proteins was significantly associated with a higher level of lymph node metastasis in IMPC (SREBF1, R = 0.405, P = 0.000; FASN, R = 0.521, P = 0.000) (Supplementary Fig. S7B). This evidence concerns the gene FASN and metastatic malignant neoplasm in the lymph nodes.