Endocrine Abstracts

Background: Graves’ disease (GD) is an autoimmune disease caused by antibodies directed to the TSH receptor (TRAb), which can be activating (TSAb), neutral, or blocking (TBAb). This balance determines the final clinical result. Typically TSAbs dominate, resulting in hyperthyroidism. Rarely, TBAbs prevail and result in hypothyroidism (1). The TRAb assay routinely used in the clinic does not allow to differentiate between stimulating or blocking characteristics.<p class...