RTN4 and idiopathic pulmonary fibrosis: YY1, RTN4, RICTOR, SFPQ, LARP6, and HELLS have been associated with cancers previously [8,9,10,11,12,13,14] and, in this study, exhibited differential level changes between control, Idiopathic Pulmonary Fibrosis (IPF) and lung cancer cells.