Pedigree of case 4 (II-1), including the thyroid function tests and thyroid antibody levels as well as the TSHR mutation profiles. Abnormal values are represented in bold, high values are underlined, and low values are in italics. AITD, autoimmune thyroid disease; WT, wild type; mut, mutant; TT4, total T4; TT3, total T3; TrT3, total rT3.