Screening of a Large Cohort of Asymptomatic SDHx Mutation Carriers in Routine Practice.

Context: When an SDHx mutation is identified in a patient with a pheochromocytoma (PCC) or a paraganglioma (PGL), predictive genetic testing can detect mutation carriers that would benefit from screening protocols.

Objective: To define the tumor detection rate in a large cohort of asymptomatic SDHX mutation carriers.

Design And Setting: Retrospective multicentric study in 6 referral centers.

Factors Affecting Loss to Follow-Up in Children and Adolescents with Chronic Endocrine Conditions.

Objective: Most children with endocrine diseases require long-term continuity of care. We investigated the prevalence of loss to follow-up (LTFU) in pediatric patients with chronic endocrine diseases and the risk factors associated with LTFU.

Methods: This observational cohort study included all children with chronic endocrine diseases included in the database of a single academic pediatric care center over a period of 8 years.

X chromosome gene dosage as a determinant of congenital malformations and of age-related comorbidity risk in patients with Turner syndrome, from childhood to early adulthood.

Objective Turner Syndrome is associated with several phenotypic conditions associated with a higher risk of subsequent comorbidity. We aimed to evaluate the prevalence of congenital malformations and the occurrence of age-related comorbid conditions and to determine whether the frequencies of congenital and acquired conditions depend on X chromosome gene dosage, as a function of karyotype subgroup. Design and methods This national retrospective observational cohort study includes 1501 patients.

Early Determinants of Thyroid Function Outcomes in Children with Congenital Hypothyroidism and a Normally Located Thyroid Gland: A Regional Cohort Study.

Background: An increase in the incidence of congenital hypothyroidism (CH) with a normally located gland has been reported worldwide. Affected individuals display transient or permanent CH during follow-up in childhood. This study aimed to determine the prevalence of transient CH and to investigate the possibility of distinguishing between transient and permanent CH in early infancy.

SFE/SFEDP adrenal insufficiency French consensus: Introduction and handbook.

The French endocrinology society (SFE) and the French pediatric endocrinology society (DFSDP) have drawn up recommendations for the management of primary and secondary adrenal insufficiency in the adult and child, based on an analysis of the literature by 19 experts in 6 work-groups. A diagnosis of adrenal insufficiency should be suspected in the presence of a number of non-specific symptoms except hyperpigmentation which is observed in primary adrenal insufficiency. Diagnosis rely on plasma cortisol and ACTH measurement at 8am and/or the cortisol increase after synacthen administration.

Group 6. Modalities and frequency of monitoring of patients with adrenal insufficiency. Patient education.

Patients with adrenal insufficiency require regular, specialised monitoring in order to optimise their replacement therapy, to detect signs of under- and over-dosage, and to examine for possible associated disorders (auto-immune disorders in the case of auto-immune primary adrenal insufficiency either isolated or as part of auto-immune polyendocrinopathy syndrome type 1; illnesses with underlying monogenic causes). The transition period between adolescence and adulthood represents an added risk of a breakdown in monitoring which requires particular attention from medical teams and coordination between adult and pediatric medical teams. It is essential to encourage patient autonomy in the management of their illness, notably their participation in treatment education programs, in particular programs that target avoidance of, or early treatment of acute adrenal insufficiency.

Group 1. Epidemiology of primary and secondary adrenal insufficiency: Prevalence and incidence, acute adrenal insufficiency, long-term morbidity and mortality.

The prevalence of primary adrenal insufficiency is estimated at between 82-144/million, with auto-immunity being the most common cause in adults and genetic causes, especially enzyme defects, being the most common cause in children. The prevalence of secondary adrenal deficiency is estimated to be between 150-280/million. The most frequent occurrence is believed to be corticosteroid-induced insufficiency, despite the incidence of clinically relevant deficiency after cessation of glucocorticoid treatment being widely debated.

Otologic disorders in Turner syndrome.

Introduction: Patients with Turner syndrome (TS) have craniofacial malformations, such as Eustachian tube hypoplasia and dysfunction and velar dysfunction, which foster acute otitis media. The aim of this study was to inventory pediatric otologic disorders in patients with TS at their first ENT consultation in our center.

Patients And Methods: We reviewed the ENT consultation data of pediatric TS patients followed in our center between 2005 and 2015: otoscopy, hearing threshold, and history of acute otitis media or ENT surgery.

Impact of the underlying etiology of growth hormone deficiency on serum IGF-I SDS levels during GH treatment in children.

Context: Regular monitoring of serum IGF-I levels during growth hormone (GH) therapy has been recommended, for assessing treatment compliance and safety.

Objective: To investigate serum IGF-I SDS levels during GH treatment in children with GH deficiency, and to identify potential determinants of these levels.

Design, Patients And Methods: This observational cohort study included all patients ( = 308) with childhood-onset non-acquired or acquired GH deficiency (GHD) included in the database of a single academic pediatric care center over a period of 10 years for whom at least one serum IGF-I SDS determination during GH treatment was available.

Mutations in BOREALIN cause thyroid dysgenesis.

Congenital hypothyroidism is the most common neonatal endocrine disorder and is primarily caused by developmental abnormalities otherwise known as thyroid dysgenesis (TD). We performed whole exome sequencing (WES) in a consanguineous family with TD and subsequently sequenced a cohort of 134 probands with TD to identify genetic factors predisposing to the disease. We identified the novel missense mutations p.

A 6-Month Trial of the Efficacy and Safety of Triptorelin Pamoate (11.25 mg) Every 3 Months in Children with Precocious Puberty: A Retrospective Comparison with Triptorelin Acetate.

Background/aims: To evaluate the efficacy and safety of a triptorelin pamoate (11.25 mg) 3-month formulation in the management of central precocious puberty (CPP) (TP Study) and to retrospectively compare it with a triptorelin acetate (11.25 mg) 3-month formulation (TA Study).

Spontaneous fertility and pregnancy outcomes amongst 480 women with Turner syndrome.

Study Question: What are the prevalence and the outcomes of spontaneous pregnancies (SP) in a large cohort of French women with Turner syndrome (TS)?

Summary Answer: Amongst 480 women with TS, 27 women (5.6%) had a total of 52 SP, with 30 full-term deliveries for 18 women.

What Is Known Already: Primary ovarian insufficiency is a classic feature of TS.

X-chromosome gene dosage as a determinant of impaired pre and postnatal growth and adult height in Turner syndrome.

Objective: Short stature is a key aspect of the phenotype of patients with Turner syndrome (TS). SHOX haploinsufficiency is responsible for about two-thirds of the height deficit. The aim was to investigate the effect of X-chromosome gene dosage on anthropometric parameters at birth, spontaneous height, and adult height (AH) after growth hormone (GH) treatment.

Mutations in the maternally imprinted gene MKRN3 are common in familial central precocious puberty.

Context And Objective: Idiopathic central precocious puberty (iCPP) is defined as early activation of the hypothalamic-pituitary-gonadal axis in the absence of identifiable central lesions. Mutations of the makorin RING finger 3 (MKRN3) gene are associated with iCPP. We aimed to assess the frequency of MKRN3 mutations in iCPP and to compare the phenotypes of patients with and without MKRN3 mutations.

Claudin-16 Deficiency Impairs Tight Junction Function in Ameloblasts, Leading to Abnormal Enamel Formation.

Claudin-16 protein (CLDN16) is a component of tight junctions (TJ) with a restrictive distribution so far demonstrated mainly in the kidney. Here, we demonstrate the expression of CLDN16 also in the tooth germ and show that claudin-16 gene (CLDN16) mutations result in amelogenesis imperfecta (AI) in the 5 studied patients with familial hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC). To investigate the role of CLDN16 in tooth formation, we studied a murine model of FHHNC and showed that CLDN16 deficiency led to altered secretory ameloblast TJ structure, lowering of extracellular pH in the forming enamel matrix, and abnormal enamel matrix protein processing, resulting in an enamel phenotype closely resembling human AI.

Triiodothyronine-predominant Graves' disease in childhood: detection and therapeutic implications.

Objective: To assess in a pediatric population, the clinical characteristics and management of triiodothyronine-predominant Graves' disease (T3-P-GD), a rare condition well known in adults, but not previously described in children.

Design: We conducted a university hospital-based observational study.

Methods: All patients with GD followed for more than 1 year between 2003 and 2013 (n=60) were included.

Natural history and management of congenital hypothyroidism with in situ thyroid gland.

Background/objective: Normally sited glands account for increasing congenital hypothyroidism (CH). Mechanisms often remain unknown. To report the incidence of CH with in situ thyroid gland (ISTG) and describe the natural history of the disease without known etiology.

Cardiovascular findings and management in Turner syndrome: insights from a French cohort.

Objective: Congenital cardiovascular malformations and aortic dilatation are frequent in patients with Turner syndrome (TS). The objective of this study was to investigate the cardiovascular findings and management in a large cohort of patients, including children and adults.

Design/methods: We recruited 336 patients with TS from a network of tertiary centers.