PLAU and rheumatoid arthritis: Bulk RNA-sequencing data comparing gene expression in degenerative meniscus tear (DMT), rheumatoid arthritis (RA), and OA showed that PLAU expression was significantly upregulated in OA compared with DMT, with minor or no changes in PLAU receptor (PLAUR) (Supplemental Figure 1; supplemental material available online with this article; https://doi.org/10.1172/jci.insight.173603DS1).