NFE2L2 and idiopathic pulmonary fibrosis: Furthermore, on reexamination of our previous microarray data, we found that the Nrf2 expression was significantly lower in pulmonary fibroblasts from IPF (fold change -1.77, p=0.0096) and from SSc-ILD (fold change -1.52, p=0.02) lung compared with non-ILD control lung [27].