SLC9A1 and idiopathic pulmonary fibrosis: The expression of SYNJ2, SH3PXD2B, FAP, SVIL, ADAM12, SH3PXD2A, SLC9A1 MMP2, MMP14 and AFAP1 was strongly increased in IPF fibroblastic foci compared to non-fibrotic IPF alveolar septae (Figure 1C).