CCL2 and uterine corpus leiomyoma: In support of all this, Khan and colleagues demonstrated that endometria belonging to women with uterine fibroids undergoing gonadotrophin-releasing hormone agonist (GnRHa) therapy exhibited decreased values of macrophage infiltration and MCP-1 levels when compared to corresponding values of macrophage infiltration and MCP-1 levels in endometria belonging to women with uterine fibroids that had not undergone GnRHa therapy [144].