ESPE Abstracts

Background: Imprinting disease such as Prader-Willi syndrome (PWS) are associated with pathological sleep due to central and obstructive apneas. No data are available concerning Silver Russell syndrome (SRS) but most patients describe day asthenia and snoring. These patients also often present with maxillo-facial malformations.Aims and objectives: We wanted to characterise sleep in SRS and evaluate GH therapy possible effect on it....

Objective: Silver-Russell syndrome (SRS) is an imprinting disorder characterized by severe intrauterine and postnatal growth retardation and feeding difficulties. Patients can benefit from recombinant growth hormone (rGH) therapy which has shown its positive effect on adult height. Our objective was to assess the short-term effects of rGH therapy on growth and nutritional status in prepubertal patients with SRS.Design: Retrospective anal...

Introduction: CAH-X syndrome refers to a subset of Congenital adrenal hyperplasia (CAH) patients who display the hypermobility phenotype of Ehlers–Danlos syndrome (hEDS) due to the monoallelic/biallelic presence of a CYP21A2 deletion extending into the TNXB gene (chimeric TNXA/TNXB gene). To date, three different TNXA/TNXB chimeras have been described, CH-1 (presence of a TNXA-derived 120bp deletion in exon 35 of the <...

Background: A few patients with NS have been reported to harbour pathogenic mutations in LZTR1 gene. RAS regulation by LZTR1-mediated ubiquitination provides an explanation for the role of LZTR1 in human disease. Mutations in this gene could hence lead to NS phenotype. Three patients with mutations in this gene and compatible NS phenotype are herein described.Case 1: A 5 year-old boy with bilateral cryp...

Introduction: Congenital adrenal hyperplasia (CAH) is an autosomal recessive disorder caused by impairment of one of the enzymes involved in the steroidogenesis pathway. CAH due to 21-hydroxylase deficiency (21-OHD) is attributed to mutations of the CYP21A2 gene and is distinguished into classic [salt wasting (SW), simple virilizing (SV)] and non-classic form. Herein we present a) the genetic investigation of 526 subjects with suspicion of 21-OHD in t...

Context: Mitochondrial encefalo-cardio-myopathy due to TMEM70 mutation is a very rare disease with frequent neonatal onset accompanied by laptic acidosis, hyperammonemia and 3-methylglutaconic aciduria.Case presentation: Patient DT presented at 7.5 years due to short stature (height -3.11 SDS, MPH -1.09 SDS; weight -4.41 SDS), in the context of a complex syndromic picture characterized by intrauterine growth retardation,...

IGF2, a major actor which stimulates feta growth, is located within the imprinted 11p15 region, and 11p paternal duplications are usually associated with Beckwith Wiedemann syndrome, a rare condition usually associated with overgrowth. The IGF type 1 receptor binds both IGF-I and IGF-II to promotes cell proliferation and growth, and the IGF1R gene is located at chromosome 15q. Patients with deletions or mutations of IGF1R usually present with intraut...

Neonatal diabetes (ND), classified as either permanent (PND) or transient (TND), occurs in 1/200,000 live births. In 50% cases of TND, remission presents within the first year of life, only to relapse later before puberty in 50% of cases. The most frequent cause is mutation of the 6q24 gene accompanied by mutations in heterozygosis of ABCC8 gene. 80% of mutations in this gene are in novo, due to autosomal recessive inheritance. Such cases respond to treatment with sulfonylurea...

Introduction: Mutations of the GKN gene are the most common cause of Mody diabetes. MODY II typically results in mildly elevated fasting blood sugar, without noticeable diabetes, maintaining good metabolic control without treatment.Clinical case: A 4.5 years old female infant, was referred due to presenting polyuria, polydipsia and fasting hyperglycemia of 126–130 mg/dl and 2 hours post-intake blood glucose level of 150–220 mg/dl. She was born ...

Background: Silver-Russell syndrome (SRS) is a clinically and genetically heterogeneous disorder, which remains a clinical diagnosis. The Netchine-Harbison clinical scoring system (NH-CSS), recently adopted by the first international consensus on SRS, defines SRS with at least 4 of the 6 following criteria: born SGA, postnatal growth retardation, relative macrocephaly at birth, prominent forehead, body asymmetry and early feeding difficulties. It is related to 11p15 ICR1 loss ...