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    Clinical Characteristics of Children with Combined Pituitary Hormone Deficiency and the Effects of Growth Hormone Treatment
    (Georg Thieme Verlag Kg, 2023) Besci, Ozge; Sevim, Reyhan Deveci; Acinikli, Kubra Yuksek; Demir, Korcan; Catli, Gonul; Ozhan, Bayram; Unuvar, Tolga
    Aim We aimed to describe the clinical characteristics of patients with congenital combined pituitary hormone deficiency (CPHD) and evaluate the first-year growth responses of individuals with CPHD and isolated growth hormone deficiency (IGHD) in order to establish the influence of other hormone deficiencies on growth response.Patients and Methods This retrospective study was conducted in four tertiary care centers in Turkey. The records of patients diagnosed with CPHD (n=39) and severe IGHD (n=50) were collected. Cases with acquired lesions or chronic diseases were not included in the study. Data are presented as median (interquartile range).Results Among 39 patients (13 females; 33%) with a diagnosis of CPHD, the majority of patients (64%) presented initially with combined deficits at baseline examination, whereas isolated deficiencies (36%) were less prevalent. Among all patients with GH deficiency, TSH, ACTH, FSH/LH, and ADH deficiencies were present in 94%, 74%, 44%, and 9% of patients, respectively. Patients with CPHD were diagnosed at a younger age (4.9 (8.4) vs. 11.6 (4.1), p<0.001, respectively) and had lower peak GH concentrations (0.4 (1.8) vs. 3.7 (2.9), p<0.001, respectively) than patients with IGHD. Patients with IGHD and CPHD had similar first-year growth responses (Delta height SD score of 0.55 (0.63) vs. 0.76 (0.71), respectively, p=0.45).Conclusions We established the nature and timing of numerous hormonal deficits emerging over time. We also identified that the existence of CPHD did not hinder growth response.
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    Clinical features, diagnosis and treatment outcomes of Cushing's disease in children: A multicenter study
    (Wiley, 2024) Tarcin, Gurkan; Catli, Gonul; Cetinkaya, Semra; Eren, Erdal; Kardelen, Asli Derya; Akinci, Aysehan; Bober, Ece
    Objective: Since Cushing's disease (CD) is less common in the paediatric age group than in adults, data on this subject are relatively limited in children. Herein, we aim to share the clinical, diagnostic and therapeutic features of paediatric CD cases.Design: National, multicenter and retrospective study.Patients: All centres were asked to complete a form including questions regarding initial complaints, physical examination findings, diagnostic tests, treatment modalities and follow-up data of the children with CD between December 2015 and March 2017.Measurements: Diagnostic tests of CD and tumour size.Results: Thirty-four patients (M:F = 16:18) from 15 tertiary centres were enroled. The most frequent complaint and physical examination finding were rapid weight gain, and round face with plethora, respectively. Late-night serum cortisol level was the most sensitive test for the diagnosis of hypercortisolism and morning adrenocorticotropic hormone (ACTH) level to demonstrate the pituitary origin (100% and 96.8%, respectively). Adenoma was detected on magnetic resonance imaging (MRI) in 70.5% of the patients. Transsphenoidal adenomectomy (TSA) was the most preferred treatment (78.1%). At follow-up, 6 (24%) of the patients who underwent TSA were reoperated due to recurrence or surgical failure.Conclusions: Herein, national data of the clinical experience on paediatric CD have been presented. Our findings highlight that presenting complaints may be subtle in children, the sensitivities of the diagnostic tests are very variable and require a careful interpretation, and MRI fails to detect adenoma in approximately one-third of cases. Finally, clinicians should be aware of the recurrence of the disease during the follow-up after surgery.
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    Comprehensive genetic testing shows one in five children with diabetes and non-autoimmune extra-pancreatic features have monogenic aetiology
    (Karger, 2018) Patel, Kashyap A.; Colclough, Kevin; Ozbek, Mehmet Nuri; Yildiz, Melek; Guran, Tulay; Kocyigit, Cemil; Acar, Sezer; Siklar, Zeynep; Atar, Muge; Johnson, Matt B.; Flanagan, Sarah E.; Ellard, Sian; Cizmecioglu, Filiz Mine; Berberoglu, Merih; Demir, Korcan; Catli, Gonul; Bas, Serpil; Akçay, Teoman; Demirbilek, Huseyin; Weedon, Michael N.; Hattersley, Andrew T.
    Young onset Diabetes with non-autoimmune extra pancreatic features
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    Revisiting Classical 3 beta-hydroxysteroid Dehydrogenase 2 Deficiency: Lessons from 31 Pediatric Cases
    (Endocrine Soc, 2020) Guran, Tulay; Kara, Cengiz; Yildiz, Melek; Bitkin, Eda C.; Haklar, Goncagul; Lin, Jen-Chieh; Keskin, Mehmet; Barnard, Lise; Anik, Ahmet; Catli, Gonul; Guven, Ayla; Kirel, Birgul; Tutunculer, Filiz; Onal, Hasan; Turan, Serap; Akçay, Teoman; Atay, Zeynep; Yilmaz, Gulay C.; Mamadova, Jamala; Akbarzade, Azad; Sirikci, Onder; Storbeck, Karl-Heinz; Baris, Tugba; Chung, Bon-Chu; Bereket, Abdullah
    Context: The clinical effects of classical 3 beta-hydroxysteroid dehydrogenase 2 (3 beta HSD2) deficiency are insufficiently defined due to a limited number of published cases. Objective: To evaluate an integrated steroid metabolome and the short- and long-term clinical features of 3 beta HSD2 deficiency. Design: Multicenter, cross-sectional study. Setting: Nine tertiary pediatric endocrinology clinics across Turkey. Patients: Children with clinical diagnosis of 3 beta HSD2 deficiency. Main Outcome Measures: Clinical manifestations, genotype-phenotype-metabolomic relations. A structured questionnaire was used to evaluate the data of patients with clinical 3 beta HSD2 deficiency. Genetic analysis of HSD3B2 was performed using Sanger sequencing. Novel HSD3B2 mutations were studied in vitro. Nineteen plasma adrenal steroids were measured using LC-MS/MS. Results: Eleven homozygous HSD3B2 mutations (6 novel) were identified in 31 children (19 male/12 female; mean age: 6.6 +/- 5.1 yrs). The patients with homozygous pathogenic HSD3B2 missense variants of > 5% of wild type 3 beta HSD2 activity in vitro had a non-salt-losing clinical phenotype. Ambiguous genitalia was an invariable feature of all genetic males, whereas only 1 of 12 female patients presented with virilized genitalia. Premature pubarche was observed in 78% of patients. In adolescence, menstrual irregularities and polycystic ovaries in females and adrenal rest tumors and gonadal failure in males were observed. Conclusions: Genetically-documented 3 beta HSD2 deficiency includes salt-losing and non-salt-losing clinical phenotypes. Spared mineralocorticoid function and unvirilized genitalia in females may lead to misdiagnosis and underestimation of the frequency of 3 beta HSD2 deficiency. High baseline 17OHPreg to cortisol ratio and low 11-oxyandrogen concentrations by LC-MS/MS unequivocally identifies patients with 3 beta HSD2 deficiency.