“…14,15 The level of estrogen receptor in the cytosol of peripheral blood mononuclear cells is significantly lower in asymptomatic HBV carriers and patients with chronic hepatitis than in healthy controls, and administration of IFN-␣ increases its level in a dose-dependent manner in vitro and in vivo. 16,17 Together with the genetic effect of ESR1 polymorphism on several other clinical phenotypes, including breast cancer, 33 bone mineral density, 34 hypertension, 35 lipid levels, 36 coronary atherosclerosis, 37,38 and spontaneous abortion, 39 these illustrate the pleiotropic nature of the ESR1 protein. The estrogen/estrogen receptors axis can be simultaneously involved in several different metabolic pathways, including the reproductive system, bone, cardiovascular function, immune regulation, 40,41 liver function, 42,43 and HBV replication.…”