Hyperthyroidism, Familial Gestational, also known as familial gestational hyperthyroidism, is related to graves disease 1 and hyperthyroidism. An important gene associated with Hyperthyroidism, Familial Gestational is TSHR (Thyroid Stimulating Hormone Receptor). Affiliated tissues include thyroid and bone marrow, and related phenotypes are hyperthyroidism and activating thyroid-stimulating hormone receptor defect