MUC5B and idiopathic pulmonary fibrosis: For example, we identified a 3.88-fold expression change between the IPF patients and the healthy donors in the TE (chr11|1,253,519|1,253,937|MLT1C:ERVL-MaLR:LTR) that is located between exons 33 and 34 and that is significantly correlated with the high expression of the MUC5B gene in IPF (Supplemental Table 6A).