SERPINB3 and idiopathic pulmonary fibrosis: The serpin family B member 3 (SERPINB3) is another important IPF candidate gene for which we identified a 4.23-fold change in the gene expression between the IPF patients and the healthy donors, which was correlated with a 4.21-fold change in the LINE TE element (chr18|63,651,629|63,653,187|L1MA8:L1:LINE) (Supplemental Table 6A).