With regard to the clinical patient characteristics age and BMI, a consecutive Spearman correlation analysis determined a distinct association of IL-6 (endometriosis group: r = 0.426, p < 0.001; control group: r = 0.724, p < 0.001) and patient’s BMI in both groups but, interestingly, a significant association of suPar concentration with both age (r = 0.462, p = 0.013) and BMI (r = 0.601, p < 0.001) in solely our non-endometriosis control group whereas not in patients with endometriosis (BMI: r = 0.165, p = 0.231; age: r = 0.032, p = 0.811), see also (Table 3). Here, IL6 is linked to endometriosis.