Studies of the association between the pro‐inflammatory cytokine C‐reactive protein (CRP) with endometrial cancer incidence have been mixed,9, 14, 15, 17 and meta‐analyses of tumor necrosis factor alpha (TNF‐α) and interleukin 6 (IL‐6) have not demonstrated an association with endometrial cancer risk.11, 13. Here, IL6 is linked to endometrial cancer.