Adjusting for participants’ age, body mass index (BMI), hormone use within the 30 days prior to the blood draw, and pain medication use within the 48 h prior to the blood draw, higher inflammatory marker levels were noted for endometriosis cases compared to controls for each of the inflammatory markers, with the exception of IL-6, IL-10, and TARC, for which the levels were higher among the controls compared to the endometriosis cases (Table 2). This evidence concerns the gene IL10 and endometriosis.