Eosinophilic granulocytes, derived from the myeloid lineage, are primarily distributed in the synovium.[22] Considering this, using RNA sequencing data from synovial tissues of eosinophil‐mediated TMJOA rat models and KEGG enrichment analysis, we identified the involvement of the “Proteoglycans in cancer” and “TGF‐β signaling” pathways (Figure 6d). Here, TGFB1 is linked to cancer.