In the murine model of endometriosis, intravenous administrated adipose tissue-derived MSC (Ad-MSC) directly migrates to endometriosis lesions and inhibits the growth of endometriosis lesions, by suppressing the expressions of proinflammatory cytokines, including monocyte chemotactic protein-1 (MCP1), interleukin-6 (IL6), and leukemia inhibitory factor (LIF) and pro-fibrotic cytokine such as tumor growth factor-β1 (IGFB1) [97]. This evidence concerns the gene IL6 and endometriosis.