Chronic lymphocytic thyroiditis (also known as Hashimoto’s thyroiditis) is an autoimmune disease that typically originates from T-cells, is histopathologically characterized by intrathyroidal infiltration, thyrocyte destruction and hypothyroidism, and affects B and T lymphocytes, dominated by the CD4+ T helper 1 subtype.[9]. This evidence concerns the gene CD4 and Hashimoto thyroiditis.