Its overexpression, at the mRNA level, has been associated with several human tumours such as breast [29], head, and neck tumours [30], non-small cell lung carcinoma [31], and ovarian cancer [32], whereas in clear cell renal cell carcinoma and renal papillary carcinoma, the Furin mRNA expression was described as relatively low [24]. This evidence concerns the gene FURIN and neoplasm.