A study by Che et al. [47] reported that addition of IL-6 antibody to a co-culture of 17β-estradiol and endometrial cancer cells attenuates the estradiol-induced increased endometrial cancer cell growth by 60%, which leads to the conclusion that IL-6 is necessary for the estradiol-induced endometrial cancer cell growth. Here, IL6 is linked to endometrial cancer.