ESPE Abstracts

Background: There are limited data on differences in height, bone mineral density (BMD) and pubertal delay between homozygous and heterozygous carriers of IGFALS defects.Objective and hypotheses: To describe clinical and laboratory features and BMD of homozygous and heterozygous carriers of a novel IGFALS mutation in a large Kurdish family.Method: Index cases were two first degree cousins presenting with short stature, low IGF1, ve...

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...

Background: DNAJC3 is an endoplasmic reticulum (ER) co-chaperone involved in folding/processing of secretory and transmembrane proteins. The defect in the ER co-chaperone proteins impairs adaptive ER responses and leads to apoptosis, impairment of organ function with multisystemic involvement. Biallelic mutations in the DNAJC3, described in a limited number of cases cause multiple endocrine dysfunction and neurodegeneration of nervous system.<p cl...

Introduction: Steroid hormone biosynthesis is initiated by the cholesterol side-chain cleavage enzyme (P450scc), which converts cholesterol to pregnenolone, the precursor of all steroid hormones. This enzyme is encoded by the CYP11A1 gene and is responsible for glucocorticoid, mineralocorticoid and sex steroid synthesis in the adrenal glands, gonads and placenta. Early or late onset adrenal insufficiency, 46, XY sex development disorder, and hypergonadotropic ...

Background: Osteosclerotic metaphyseal dysplasia (OSMD, OMIM 615198) is an extremely rare autosomal recessive disorder, within the family of sclerosing bone dysplasias. It is a distinctive type of osteopetrosis characterised by a unique pattern of osteosclerosis predominantly involving the metaphyseal margins of the long tubular bones. OSMD is characterised by skeletal deformity and multiple fractures and associated clinically with developmental delay, hypoton...

Introduction: The leptin-melanocortin pathway is a well-studied pivotal player of body weight regulation and energy homeostasis. Pathogenic mutations of the genes involved in this pathway may result in early-onset severe obesity (ESO).Case Report: We hereby report the case of a 14-year-old girl who was referred to our pediatric outpatient clinic for the evaluation of ESO. Her parents were non-obese first cousins born in Morocco. At the t...

Background: Laron syndrome (LS) is a disorder of primary growth hormone (GH) resistance caused by genetic defects in GH and insulin-like growth factor 1 (IGF-1) axis. Here, we present the variable clinical spectrum in two sibling cases of Iraqi Arab origin with GH receptor (GHR) mutation.CASES: Two siblings referred to our clinic with the chief complaint of short stature. They had been born with a normal weight at term.Their parents were...

Introduction: Type 1 neurofibromatosis (NF1), also called Recklinghausen’s disease, is one of the most common genetic diseases. It is autosomal dominant inherited. Its diagnosis is based on the presence of a familial history of NF1 in a first-degree relative and on the presence of a set of clinical arguments. Endocrine manifestations may exist. The most common are pheochromocytoma and precocious puberty, but other endocrine disorders can be observed more ...

Introduction: Mutations of the PLS3 gene (MIM 300910), encoding plastin 3, are an extremely rare cause of osteogenesis imperfecta (OI). It has an X-linked inheritance and is characterized by early-onset osteoporosis and kyphosis, which can cause compression fractures, especially in the thoracic vertebrae. Although there are reports showing that bisphosphonates are effective in improving the bone mineral density of patients with PLS3 variants,...

Introduction: Barakat syndrome, also known as HDR syndrome (OMIM 146255), is a clinically heterogeneous, rare, autosomal dominant genetic disorder, characterized by the triad of hypoparathyroidism (H), deafness (D), and renal disease (R). The phenotypic features are attributed to mutations of the GATA3 gene, which encodes a transcription factor essential for embryonic development of the parathyroid glands, auditory system, and kidneys. Here, we report...