Athyreosis is related to hypothyroidism, congenital, nongoitrous, 2 and bamforth-lazarus syndrome. An important gene associated with Athyreosis is PAX8 (Paired Box 8), and among its related pathways/superpathways is Thyroid hormones production and peripheral downstream signaling effects. Affiliated tissues include thyroid and bone, and related phenotypes are constipation and hypothyroidism