ESPE Abstracts

Background: Laron syndrome, which is characterised with GH insensitivity, is caused by mutations of GH receptor (GHR). GHR, consisting of nine exons, is located on 5th chromosome. Typical findings of this syndrome are immature facial appearance, prominent forehead and eyes, depressed nasal bridge, low IGF1 and IGFBP3 levels which do not increase with IGF-generation test.Case report: A 4-year and 3-month old boy was admitted because of growth retardation....

Background: Vitamin D Dependent Rickets Type IA (VDDR-IA) is the most common type of VDDR and caused by mutations in CYP27B1. Here, we aimed to analyze the genotypic and phenotypic features of our VDDR-IA patients.Materials and Methods: The patients with a clinical diagnosis of VDDR-IA were enrolled and analyzed for CYP27B1 gene mutations.Results: 12 (5 males) pat...

Background: Osteogenesis imperfecta type XVII (OI17) (MIM#182120) have been described recently due to mutation in secreted protein, acidic, cysteine-rich (SPARC) gene located on 5q33.1.Objective and hypotheses: Here we report a novel mutation in SPARC causing OI17.Case: Two siblings presented to our clinic at the age of 10.3 and 0.5 years old. Parents were consanguineous. The older one was born with birth weight &...

Background: Osteogenesis imperfecta (OI) is a heterogeneous group of brittle bone disease mostly caused by quantative or qualitative defects in type I collagen. In most populations, more than 90% of the patients with OI have dominant mutations in COL1A1 or COL1A2 genes (AD-OI). Less than 10% of the cases have recessive inheritance (AR-OI). Currently 12 genes have been identified as a cause of AR-OI.Objective and hypotheses: We assumed h...

Keywords: children, primary osteoporosis, next-generation sequencingBackground: Primary osteoporosis (POP) is a rare bone fragility disorder of childhood and is mainly related to osteogenesis imperfecta (OI). However, patients without clinical OI features with recurrent long bone and/or vertebral fractures who comply with the osteoporosis criteria are considered to have non-OI POP. Diagnosis and classification of non-OI ...

Background: Osteogenesis imperfecta (OI) is characterized by low bone mass and bone fragility mainly due to COL1A1/COL1A2 gene defects. However, >17 genes have been identified in the pathogenesis of OI. Here, we aim to characterize genotypic spectrum of our OI cohort.Methods: Forty-nine OI patients (28 males) from 38 different families (13 consanguineous/9 multiplex) were screened with the next-gene...

Background: Congenital hypothyroidism (CH) is the most common cause of preventable mental retardation in children, thus screening programs of CH have been established for better management of the disorder and preventing its related neurodevelopmental consequences. Evidences from different screening programs indicated that the rate of CH is higher in pre-term and low birth weight newborns than normal ones due to the incomplete development of hypothalamic–pituitary axis in ...

Background and objective: 21alpha-hydroxylase deficiency congenital adrenal hyperplasia (21OHD-CAH) is the most common etiology of inherited primary adrenal insufficiency (PAI) in children. Neonatal CAH screening is important for early diagnosis of salt-wasting 21OHD and other virilizing CAH (11beta-hydroxylase, 3beta-hydroxysteroid dehydrogenase deficiencies) and for avoiding mortality, especially in salt-wasting CAH. Neonatal CAH screening has become nationw...

Copy-number variation (CNV) is a kind of malfunction of DNA polymerase to produce extra genetic material which leads to more number of repeats in genes. CNVs have been associated with different clinical phenotypes, such as learning disabilities, short stature, and intellectual disability. The chromosomal microarray analysis is an effective diagnostic method for identifying new CNVs and understanding their clinical effects. In this case report, a variation that has not been rep...

Introduction: Wolfram Syndrome (WFS: OMIM 222300), also known as DIDMOAD (diabetes mellitus, optic atrophy and deafness) is an autosomal recessive, progressive, neurologic, and endocrinologic, degenerative disorder caused by mutation in the WFS1 Gene. This report presents a case with a new defined mutation in WFS.Case presentation: Fourteen-year-old male patient was diagnosed with non-autoimmune type I diabetes at the age of 5 and insulin treatment was a...