ESPE Abstracts

Background: Maturity Onset Diabetes of the Young (MODY) constitutes a genetically and clinically heterogeneous type of Monogenic Diabetes (MD). It is characterized by early onset, autosomal dominant inheritance and a defect in β cell insulin secretion. To date 14 different MODY subtypes have been reported each one with a distinct genetic aetiology. However four are the most common subtypes, namely MODY 1 (HNF4A), MODY2 (GCK), MODY3 (HNF1A), MODY...

Background: The most common endocrine cause of growth disorders in childhood is growth hormone deficiency (GHD). The rare monogenic forms of GHD are inherited as autosomal dominant or recessive traits and manifest as isolated deficiency or in combination with other hormone deficiencies. Here, we report on a three-year-old girl with a severe growth retardation (height 77 cm, – 5.6 S.D.S.). She is the only child of non-consanguineous parents from northern Ira...

Background: Isolated Growth Hormone Deficiency (IGHD) is usually associated with a delayed bone age. A genetic cause for IGHD is more frequently found in patients with familial cases and/or consanguineous parents.Objective and hypotheses: To diagnose the genetic cause of IGHD and clarify the unusual clinical presentation of advanced bone age in one patient born to consanguineous parents.Method: Sanger sequencing of GH1, <e...

Introduction: X-linked hypophosphataemic rickets (XLH), due to mutations in the PHEX (Phosphate-regulating Endopeptidase homolog; X-linked) gene, causes reduced bone and dentin mineralisation and decreased renal phosphate reabsorption. Mosaic PHEX mutations are reported only in a few case reports.We report three male cases, with mosaic pathogenic PHEX variants, showing importance of considering this in the diagnosis of XLH.Case 1 pre...

Aggrecan is a structural glycoprotein of the extracellular matrix of cartilage present in the articular cartilage, growth plate and cartilage of the intervertebral disc. Biallelic pathogenic variants are the cause of aggrecan type spondyloepiphyseal dysplasia (OMIM#612813) while the presence of heterozygous pathogenic variants determine Kimberley type spondyloepiphyseal dysplasia (OMIM#608361) and short stature associated or not with acceleration of bone maturation and early o...

Introduction: Maturity Onset Diabetes of the Young (MODY) is clinically and genetically heterogeneous type of Monogenic Diabetes (MD) and to date 14 genes have been associated with different MODY subtypes. It is a rare disease characterized by early onset hyperglycemia, autosomal dominant inheritance, and defect in β cell insulin secretion, often misclassified as T1DM or T2DM.Materials and Methods: Genetic analysis ...

Objective: To explore the clinical features and the genetic cause of a multiple malformation patient with short stature.Methods: The clinical data was collected in Beijing Children’s Hospital in November 2017. The disease-causing variant was identified using exome sequencing and confirmed with Sanger sequencing. Related literature was searched from Wanfang and Pubmed databases using the key word of ‘PORCN gene’ to identify the clinical fea...

Objective: The aim of this study was to detect potential gene mutation of Noonan Syndrome in a Chinese family.Methods: Patient with clinical diagnosis and parents were analyzed in this study. The analysis included medical histories, clinical analysis, and genetic tests. The PTPN11, KRAS, SOS1, RAF1, NRAS, BRAF, RIT1, SOS2, LZTR1, SHOC2, CBL, NF1 gene was sequenced to identify the pathogenic mutation responsible for the development of Noonan Syndrome by P...

Background: Idiopathic hypogonadotropic hypogonadism (IHH) is characterised by failure of initiation or maintenance of puberty due to insufficient gonadotropin release, which is not associated with anosmia/hyposmia.Objective and hypotheses: The objective of this study was to determine the distribution of causative mutations in an hereditary form of IHH.Method: In this prospective collaborative study, families with more than one aff...

Background: Wolfram syndrome is a rare autosomal recessive neurodegenerative disorder caused by mutations in the WFS1 gene. The WFS1 gene is active in cells of body, with highly expression in the, brain, lungs, heart, inner ear, and pancreas. Within cells, WFS1 gene encodes wolframin protein that is located in a structure of endoplasmic reticulum. Endoplasmic reticulum has critical role in protein folding and material transportation within the cell o...