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dc.contributor.authorSeven Menevşe, Tuba
dc.contributor.authorKendir Demirkol, Yasemin
dc.contributor.authorGürpınar Tosun, Büşra
dc.contributor.authorBayramoğlu, Elvan
dc.contributor.authorYıldız, Melek
dc.contributor.authorAcar, Sezer
dc.contributor.authorErişen Karaca, Seda
dc.contributor.authorOrbak, Zerrin
dc.contributor.authorÖnder, Asan
dc.contributor.authorSöbü, Elif
dc.contributor.authorAnık, Ahmet
dc.contributor.authorAtay, Zeynep
dc.contributor.authorBuğrul, Fuat
dc.contributor.authorDemir, Korcan
dc.contributor.authorDoğan, Durmuş
dc.contributor.authorEmeksiz, Hamdi Cihan
dc.contributor.authorKırmızıbekmez, Heves
dc.contributor.authorÖzcan Murat, Nurhan
dc.contributor.authorYaman, Akan
dc.contributor.authorTuran, Serap
dc.contributor.authorBereket, Abdullah
dc.contributor.authorGüran, Tülay
dc.identifier.citationSeven Menevşe, T., Kendir Demirkol, Y., Gürpınar Tosun, B., Bayramoğlu, E., Yıldız, M., Acar, S. ... Güran, T. (2021). Adrenocortical hormone profiles do not predict the molecular etiology in non-CAH primary adrenal insufficiency. Hormone Research in Paediatrics içinde (64-65. ss.).en_US
dc.description.abstractBackground: Primary adrenal insufficiency other than congenital adrenal hyperplasia (non-CAH PAI) is very uncommon in children but associated with a variety of molecular defects. Biosynthesis of adrenocortical hormones is reduced although the relation of steroid profiles with underlying molecular etiology is not yet studied. Objective: Investigation of clinical and steroid hormone profiles of a multicenter cohort of children with non-CAH PAI. Design: Patients with CAH, adrenoleukodystrophy, autoimmune adrenal insufficiency or obvious syndromic PAI on clinical and biochemical assessment were excluded. Genetic analysis was performed using either targeted gene panel or whole-exome sequencing. Plasma adrenal steroids were quantified by liquid chromatography-mass spectrometry and compared to that of controls. Setting: Sixteen tertiary pediatric endocrinology clinics. Patients: Forty-one children (19 females, median age: 3 months, range: 0-8 years) with non-CAH PAI of unknown etiology. Results: A genetic diagnosis was obtained in 29 (68%) patients by targeted gene panel. Further molecular diagnosis could not be achieved by WES. The range of etiologies was: MC2R (n = 6), StAR (n = 6), NNT (n = 3), NR0B1 (n = 3), CYP11A1 (n = 2), MRAP (n = 2), SGPL1 (n = 2), ABCD1 (n = 1), AIRE (n = 1), AAAS (n = 1), HSD3B2 (n = 1). Steroid profiling demonstrated low levels in all adrenocortical steroid hormones irrespective of age and not varied among the genetic etiologies except two patients with new-onset symptoms of PAI due to homozygous c.518T>A(p.Leu173Gln) SGPL1, and hemizygous c.1772G>T(p.Arg591Leu) ABCD1 defects, and another patient with non-classic non-CAH PAI due to homozygous c.1351C>T (p.Arg451Trp) variant in CYP11A1. Compared to age-matched healthy control group in whom steroid hormone concentrations are physiologically low, the patient group had even lower steroid concentrations, most significantly in cortisone, cortisol, and corticosterone (P < 0.0001, area under the ROC curve: 0.96, 0.88, 0.87, respectively). Plasma cortisol<4 ng/ml, cortisone<11 ng/ml, and corticosterone<0.11 ng/ml had >95% specificity to segregate non-CAH PAI patients compared to control groups. Conclusion: Adrenocortical hormone profiles are highly sensitive for the diagnosis of non-CAH PAI, while, in contrast to CAH, they are unlikely to point out a specific molecular diagnosis. Targeted gene panel sequencing is an undisputed optimal approach in the molecular diagnosis of non-CAH PAI with low cost and high efficacy, while little additional benefit is expected from whole-exome sequencing. Further progress can be made, mainly by more collaboration and exchanging knowledge for delineation of rare causes of primary adrenal insufficiency.en_US
dc.subjectPrimary Adrenal Insufficiencyen_US
dc.subjectMolecular Etiologyen_US
dc.subjectHormone Profilesen_US
dc.titleAdrenocortical hormone profiles do not predict the molecular etiology in non-CAH primary adrenal insufficiencyen_US
dc.relation.ispartofHormone Research in Paediatricsen_US
dc.departmentİstanbul Medipol Üniversitesi, Tıp Fakültesi, Dahili Tıp Bilimleri Bölümü, Çocuk Sağlığı ve Hastalıkları Ana Bilim Dalıen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US

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