ESPE Abstracts

Introduction: The SLC34A1 gene encodes the NaPi-IIa cotransporter, which plays an important role in phosphate reabsorption in the kidney proximal tubule. Inactivating mutations of this gene cause nephrolithiasis and osteoporosis, together with clinical pictures such as hypophosphatemic rickets type 1, Fanconi renotubular syndrome type 2, and infantile hypercalcemia type 2.Case: A 40-day-old male patient presented with me...

Introduction: Aggrecan, a chondroitin sulfate proteoglycan encoded by the ACAN gene, is an important structural component of the cartilage matrix. Variants in the ACAN gene are associated with a group of skeletal dysplasias called aggrecanopathy, which shows a broad phenotypic spectrum. It has been reported that some heterozygous variants in this gene are responsible for the etiology of familial or idiopathic short stature located at the lightest end of the sp...

Entrance: HOXA gene deletions cause an appearance characterized by short stature, mild developmental delay, characteristic face, small hands and feet, short and large thumbs, and urogenital malformations. Clinical signs may vary according to the content of the deletion region.Case: The case applied to our clinic with the complaint of short stature. It was learned that the patient was born at term 2500 gr and had bilatera...

Background: Bone morphogenetic protein 15 (BMP15), is an oocyte-specific growth factor, that regulates folliculogenesis and ovulation rate. It is encoded by the BMP15 gene (chromosome Xp11.2), in which heterozygous missense variants in the precursor or mature peptide cause primary ovarian insufficiency (POI) with the dominant-negative effect. BMP15-related ovarian dysgenesis (OD) constitutes 1.5-2.0% of POI. The underlying mechanism ...

Introduction: 17 β-Hydroxysteroid Dehydrogenase Type 3 (17β-HSD3) enzyme provides the conversion of ∆4-Androstenedione (A) to testosterone (T) in testicles. 17β-HSD3 deficiency is a rare autosomal recessive cause of 46,XY disorders of sexual development (DSD) and is the most common form of testosterone biosynthesis defects. The external genitalia can vary from normal female appearance to atypical genitalia.C...

Introduction: Although thyroid nodule is seen less frequently in childhood than in adults, it is more likely to be malignant. The aim of this study was to examine the characteristics of the patients followed up for thyroid nodules and to define the patients with malignant potential by laboratory, radiological and cytological evaluations.Method: 100 patients (F/M:63/37) with thyroid nodules followed up in Pediatric Endocr...

Background and Aims: Irisin is a newly discovered adipomyokine that occurs by the cleaved from a transmembrane protein called "Fibronectintype III domain containing 5" (FNDC5).Previously, there was a change in irisin levels in different prepubertal and pubertal stages.Although the mechanisms that trigger the onset of puberty cannot be explained yet, there is a hypothesis that peripheral adipose tissue and adipokines secreted there may induce the initia...

Introduction: MODY is an autosomal dominant inherited type of diabetes that has been diagnosed before the age of 25 and caused by pancreatic β-cell dysfunction. HNF1B-MODY is more rare than other MODY causes and its frequency is between 1-5%. Mutations in HNF1B (MODY 5) are associated with pancreatic agenesis, kidney anomalies, genital system malformations and liver dysfunction.Case: The patient is 8 years 2 ...

Background: Resistance to thyroid hormone (RTH) is an inherited syndrome characterized by reduced sensitivity of target tissues to thyroid hormone.Objective and hypotheses: We describe the clinical, biochemical data and mutation analysis of two patients and their families with (RTH).Method: We conducted clinical studies and genetic analysis of these two patients and their families.Results: First patient refer...

Background: Wolcott-Rallison syndrome (WRS) is a rare, autosomal recessive disease and characterized by early-onset diabetes, spondyloepiphyseal dysplasia, short stature, osteopenia, acute liver failure, and neurological deficit. It results from mutation in a gene of the eukaryotic translation initiation factor 2-α kinase 3 (EIF2AK3).Objective and hypotheses: We report two WRS patients diagnosed in infantile period.Me...