To gain unbiased insight into WT1 expression dynamics and cell-type specificity in human lungs, we performed snRNA-Seq using the 10X Genomics platform to profile nuclei from 18 IPF and 11 normal donor lung samples, isolated from the distal regions of the right lower lobe (Figure 1A and Supplemental Table 1; supplemental material available online with this article; https://doi.org/10.1172/JCI188819DS1). Here, WT1 is linked to idiopathic pulmonary fibrosis.