ESPE Abstracts

Background: Congenital hypothyroidism is primarily due to thyroid dysgenesis (TD). The genes implicated in TD, account for a small number of patients with monogenic forms, less than 5%. Borealin is a major component of the Chromosomal Passenger Complex, an essential regulator of mitosis.Objective and hypotheses: To understand the role of Borealin mutations found in patients with TD.Method: We performed whole exome sequencing (WES) ...

Background: SHOX and enhancer regions on PAR1 disorders have variable phenotypic consequences such as idiopathic short stature (ISS) and Leri-Weill Dyschondrosteosis (LWD).Objective and hypotheses: The aim of this observational multicentric study was to describe phenotypes and genotypes of a large population with mutation on SHOX and adjacent regions and to identify a possible phenotype–genotype correlation.M...

Background: Puberty suppression using gonadotropin releasing hormone analogues (GnRHa) is recommended by current guidelines. Although GnRHa have long been used to treat children with precocious puberty there are few data on the outcome of this treatment in gender dysphoric adolescents.Objective and hypotheses: We aimed to evaluate the efficacy and safety of triptorelin to suppress puberty in a cohort of gender dysphoric adolescents.<p class="abstext"...

Background: Maternal bariatric surgery is associated with increased risk of small-for-gestational-age infants. Risk of nutritional deficiencies in neonates of mothers with prior gastric bypass (GBP) is unclear.Methods: This study compared the clinical and cord blood biological characteristics of 56 newborns of GBP mothers and 56 newborns of healthy mothers, in the Obstetrics Department of Angers University Hospital between 01/03/2008 and 31/10/2012. Afte...

Introduction: HbA1C goals are rarely achieved in children with Type 1 diabetes (T1D) except at the cost of increased hypoglycaemia episodes. The Diabeloop Hybrid Closed-Loop system improves time in range and glycemic control in adults. However, the efficacy and safety of the system had not yet been evaluated in children. Our objective was to evaluate the safety and efficiency of the Diabeloop hybrid closed-loop system in prepubescent children (DBL4K).<p cl...

Introduction: Newborn premature infants are susceptible to develop relative adrenal insufficiency (AI) following transition from fetal to extrauterine life. Clinical signs of AI include hypoglycemia, dysbalanced electrolytes, fatigue and low blood pressure. Collecting serum cortisol samples itself is stressful for the infant, which challenges - in addition to analytic problems due to interference between fetal, placental and maternal derived steroids – th...

Background: Current guidelines recommend that gender dysphoric adolescents be treated with puberty suppression using gonadotropin releasing hormone analogues (GnRHa) followed by cross sex hormones. However limited data are available on the safety and side effects of this treatment. In adults changes in adrenal steroids have been observed during cross sex hormone treatment.Objective and hypotheses: We aimed to investigate the effect of GnRHa and cross sex...

Introduction: Generation of neutralizing antibodies (Nab) is a complication in enzyme replacement therapies and can lead to loss of treatment efficacy. Asfotase alfa (AA) was recently approved as the first replacement therapy in severe hypophosphatasia (congenital deficiency of alkaline phosphatase [TNSALP]). We report a case of neutralizing antibody mediated loss of efficacy of AA treatment in hypophosphatasia and the successful result of immune tolerance ind...

Background: Obesity is a major feature in several syndromes. In patients with early-onset severe obesity, 7% harbour a single locus mutation.Objective and hypotheses: We report a 3.11 year old male patient with early onset obesity (BMI 29.9 kg/m2 >>P97), ongoing excessive weight gain, autoaggressive behaviour, and delayed speech development. No growth retardation or further dysmorphic signs. Early postnatal feeding difficulties require...

Background: Long-acting somatostatin analogues have been reported to be an effective treatment option to prevent severe hypoglycaemia in children with severe diffuse congenital hyperinsulinism (CHI). Possible side effects include gallstones, growth retardation and necrotizing enterocolitis (NEC), the latter occurring in particular cases of newborns treated with octreotide. So far only short-acting octreotide is being used in early infancy, requiring multiple injections daily o...