ESPE Abstracts

Introduction: Monogenic diabetes (MD) accounts for at least 3% of all pediatric diabetes cases. MD is often misdiagnosed as type 1 or type 2 diabetes, because of its wide phenotypic spectrum. While clinical and biochemical parameters can suggest MD, a definitive diagnosis requires genetic analysis. We conducted a broad study to diagnose MD cases. Then, with the gained knowledge, we designed a new diagnostic to...

Introduction: Maturity-onset diabetes of the youth (MODY), is a genetically and clinically heterogeneous group of diseases in the pancreatic β–cell that impair insulin secreation. It mostly caused by heterozygous mutations in one of 11 different genes associated with β–cell function. The aim of this study is detection of the distribution of both known and novel point mutations of these genes in Turkish population.Pati...

Background: Mutations in GH1 gene cause isolated growth hormone deficiency. Several disease-causing mutations from patients with IGHD have been reported. These mutations have been shown to (a) produce shorter isoforms of GH that does not bind to growth hormone receptor, (b) cause diminished secretion of GH or (c) result in misfolded GH protein. Large sequencing studies from the non-clinical population show several hundred genetic variations in GH1 gene. Role of common polymorp...

Introduction: The human adrenal gland originates from the adrenogonadal primordium at around 4 weeks post conception (wpc) and undergoes marked developmental changes throughout the first half of pregnancy. Several key aspects of adrenal maturation are well-established, such as the formation of a large inner fetal zone (FZ) and synthesis of dehydroepiandrosterone, but many other processes contributing to adrenal gland development and function in humans are stil...

Background and Aims: Disorders of sex development (DSD) are a group of rare congenital conditions. Clinical management of patients with DSD is often difficult and requires multidisciplinary approach.Material and methods: Twenty-eight patients aged 1 to 18 years with different forms of 46, XY DSD were included. The subjects have undergone a clinical examination, karyotype analysis followed by the next generation sequencing (NGS) using MiS...

Background: Primary ciliary dyskinesia (PCD) is a type of ciliary dyskinesia that is usually caused by autosomal recessive inheritance and can manifest as recurrent respiratory infections, bronchiectasis, infertility, laterality defects, and chronic otolaryngological disease. Although ependymal cilia, which affect the flow of cerebrospinal fluid in the central nervous system, have much in common with respiratory cilia in terms of structure and function, hydroc...

The majority of individuals with disorders/differences of sex development (DSD) do not have a genetic etiology. However, recently new genes causing DSD have been reported and using the unbiased approach of whole exome sequencing (WES) the diagnostic yield should be improving. Here, we performed WES on a large cohort of 125 individuals all of Algerian origin, who presented with a wide range of DSD phenotypes. Parental consanguinity was reported in 36% of individuals. The geneti...

Background: Ten percent of children born small for gestational age fail to catch-up and remain short during childhood (SGA-SS). Several genes causing SGA-SS have been described, however, in most cases, the mechanisms of prenatal and postnatal growth impairment remain unknown.Aim: To decipher genetic etiologies within a large single-center cohort of SGA-SS children in order to better understand the pathophysiological mech...

Case report: 6 yrs. old boy presented with high total T4, free T4, reverse T3, and normal total T3 and TSH. He has a history of tic disorder. Blood pressure, and heart rate were normal, no palpitations, no weight loss. Thyroid peroxidase and thyroglobulin antibodies were normal. Thyroid sonogram was normal. Family is of Hispanic origin. There was a family history of elevated T4 in the paternal uncle (half-brother of the father)Me...

Objective: Inactivating mutations in the gene encoding the alpha-subunit of Gs (GNAS) gene, which consists of exons 1-13 and encodes the alpha-subunit of the stimulatory G protein (Gsa), are associated with several clinical syndromes, including pseudohypoparathyroidism (PHP), pseudopseudohypoparathyroidism (PPHP), and progressive osseous heteroplasia (POH).Method: We documented patient clinical characteristics a...