SLC5A11 and idiopathic pulmonary fibrosis: In contrast to the findings in whole lung tissues, our RT-qPCR data confirmed elevated mRNA expression of SLC5A3 and SLC2A13 in IPF lung fibroblast cells, despite no difference in SMIT2 (SLC5A11) mRNA levels between IPF and normal fibroblasts (Fig. 1F).