Notably, serum concentrations of IL6 and IL8 in endometriosis patients are higher than in healthy women (Othman et al. 2008; Sikora et al. 2017), and PGE2 production is also elevated in these patients (De Leon et al. 1988; Liu et al. 2011; Lucidi et al. 2005; Maybin et al. 2011). Here, IL6 is linked to endometriosis.