Glucocorticoid resistance syndrome caused by a novel NR3C1 point mutation

Endocrine Journal
Reem Al ArganJuan Rivera

Abstract

Glucocorticoid resistance syndrome (GRS) is a rare genetic disorder caused by inactivating mutations of the NR3C1 gene which encodes the glucocorticoid receptor. The phenotypic spectrum is broad but typically include symptoms of adrenal insufficiency, mineralocorticoid excess and hyperandrogenism. We report a new case associated with a novel NR3C1 mutation. A 55-year-old woman with lifelong history of low body weight, hyperandrogenism and anxiety was seen at the endocrine clinic after left adrenalectomy and salpingoophorectomy for lesions suspicious of ovarian cancer and adrenal metastasis. The tumors turned out to be a 3.5 cm benign ovarian serous adenofibroma and a 3.5 cm multinodular adrenal mass. She complained of worsened fatigue and inability to recover weight lost with surgery. Pre-operative serum and urinary cortisol were elevated, but she had no stigma of Cushing's syndrome. Plasma ACTH was elevated and a 1-mcg cosyntropin stimulation test was normal. Her fatigue persisted over ensuing years and ACTH-dependent hypercortisolemia remained stable. Low dose oral dexamethasone failed to suppress endogenous cortisol. A pituitary MRI was normal but revealed incidental brain aneurysms. Bone densitometry showed profound osteopo...Continue Reading

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Citations

Jun 22, 2019·The Journal of Clinical Endocrinology and Metabolism·Géraldine VitelliusMarc Lombes
Jul 2, 2020·Molecular Diagnosis & Therapy·Rosa Maria ParagliolaPaola Concolino
Oct 19, 2019·Pharmacology & Therapeutics·Edward D ChanPaul E Marik
Apr 18, 2021·Molecular and Cellular Endocrinology·Clarissa Silva Martins, Margaret de Castro

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