COL4A2 and prostate neoplasm: Even more interesting is the group of proteins found under the GO term “basement membrane” including its main structural elements like COL4A2, CCDC80 (coiled-coil domain containing 80), glycoproteins NID1 and NID2, proteoglycan perlecan/HGSP2, ECM regulator LOXL2 and a poorly studied protein NTN1 known to be expressed in prostate tumors (Latil et al., 2003).