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- Title
Hyperthyroxinemia and Hypercortisolemia due to Familial Dysalbuminemia.
- Authors
Moran, Carla; Seger, Christoph; Taylor, Kevin; Oddy, Susan; Burling, Keith; Rajanayagam, Odelia; Fairall, Louise; McGowan, Anne; Lyons, Greta; Halsall, David; Gurnell, Mark; Schwabe, John; Chatterjee, Krishna; Strey, Christopher
- Abstract
A 23-year-old man and his grandmother with hyperthyroxinemia and hypercortisolemia were heterozygous for an ALB mutation (p. Arg218Pro), known to cause familial dysalbuminemic hyperthyroxinemia (FDH). However, serum-free cortisol levels in these individuals were normal and total cortisol concentrations fell markedly after depletion of albumin from their serum. We conclude that binding of steroid as well as iodothyronines to mutant albumin causes raised circulating cortisol as well as thyroid hormones in euthyroid euadrenal individuals with R218P FDH, with potential for misdiagnosis, unnecessary investigation, and inappropriate treatment.
- Subjects
THYROID hormones; THYROID gland function tests; SERUM albumin; THYROTROPIN; STEROID drugs
- Publication
Thyroid, 2020, Vol 30, Issue 11, p1681
- ISSN
1050-7256
- Publication type
Article
- DOI
10.1089/thy.2020.0315