Endocrine Abstracts

Background: Hashimoto´s thyroiditis (HT) and Graves´ disease (GD) are known co-aggregate in families, but the magnitude and nature of a shared etiology is unknown. The aim of this study was to estimate the shared genetic influence on these diseases. In addition, we sought to examine if the heritability of HT and GD differs between men and women.Methods: We used national health registries to identify cases of HT and GD in a cohort of 110 814 Swe...