A study that evaluated the level of Treg cells in the peripheral blood of patients with chronic hepatitis C (CHC) and MASLD/advanced MASLD, and demonstrated that the percentage of circulating CD25+CD127- and Foxp3+ was higher only in patients with CHC, and no changes were observed in patients with MASLD/advanced MASLD (34). The gene discussed is FOXP3; the disease is chronic hepatitis C virus infection.