In comparison to normal tissues, Nos2, Hgf, Lama1, Csf3r, Csf2rb2, Col4a1, Col4a2, Adcy2, Adcy4, Gstm3 and Gstm6 were identified as the most significant genes in cancer pathways (Figure 2(c)). This evidence concerns the gene COL4A2 and cancer.