Buonocore, F; Achermann, JC; (2020) Primary adrenal insufficiency: New genetic causes and their long-term consequences. [Review]. Clinical Endocrinology , 92 (1) pp. 11-20. 10.1111/cen.14109.

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Abstract

Primary adrenal insufficiency (PAI) is a potentially life‐threatening condition that requires urgent diagnosis and treatment. Whilst the most common causes are congenital adrenal hyperplasia (CAH) in childhood and autoimmune adrenal insufficiency in adolescence and adulthood, more than 30 other physical and genetics cause of PAI have been reported. Reaching a specific diagnosis can have implications for management and for monitoring associated features, as well as for counselling families about recurrence risk in siblings and relatives. Here, we describe some recent insights into the genetics of adrenal insufficiency and associated molecular mechanisms. We discuss (a) the role of the nuclear receptors DAX‐1 (NR0B1) and steroidogenic factor‐1 (SF‐1, NR5A1) in human adrenal and reproductive dysfunction; (b) multisystem growth restriction syndromes due to gain‐of‐function in the growth repressors CDKN1C (IMAGE syndrome) and SAMD9 (MIRAGE syndrome), or loss of POLE1; (c) nonclassic forms of STAR and P450scc/CYP11A1 insufficiency that present with a delayed‐onset adrenal phenotype and represent a surprisingly prevalent cause of undiagnosed PAI; and (d) a new sphingolipidosis causing PAI due to defects in sphingosine‐1‐phosphate lyase‐1 (SGPL1). Reaching a specific diagnosis can have life‐long implications for management. In some situations, milder or nonclassic forms of these conditions can first present in adulthood and may have been labelled, “Addison's disease.”

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