In addition, future biomarkers may be identified among the antigens NME2, CDC42BPB, RPS2, PTBP1, SON, MCM3, CD320, VIM, CENPB, PDE4DIP, CCNL2, HMG-14, HSPD1, MAZ, RPL6, STUB1, and MBTPS1 all of which have been associated with different human cancers. Here, PDE4DIP is linked to cancer.