IL6 and atrial fibrillation: Given the data above showing the presence of high levels of IL-6 and IL-10 and their levels correlating with the abundance of CD14+HLA-DR–/low MDSC in ascites from OC patients, we next defined whether AF-driven expansion of CD14+HLA-DR–/low MDSC was due to the presence of IL-6 and/or IL-10 in the ascites from OC patients.