ESPE Abstracts

We introduce the ReTRIACt Trial (NCT05579327) of tiratricol (Triac) for MCT8-deficiency, a rare X-linked disease resulting from disordered thyroid hormone transport and characterized by profound neurodevelopmental delay and features of chronic peripheral thyrotoxicosis. The ReTRIACt Trial aims to verify the effects of tiratricol observed in previous studies. It is a double-blind, randomized, multicenter, placebo-controlled study to evaluate the effects of tiratricol discontinu...

Objective: The treatment of children with classical congenital adrenal hyperplasia due to 21-hydroxylase deficiency (CAH) is a challenge since both undertreatment and overtreatment with glucocorticoids can affect growth. Numerous reports in the literature have shown that the linear growth of individuals with CAH is affected and adult height is compromised. However, most of these data were obtained in the era before CAH newborn screening....

Background: Congenital hypothyroidism (CH) is the most common neonatal endocrine disorder, with an incidence of 1:3000 neonates, and one of the most frequent preventable causes of mental retardation worldwide. Most (65%) cases of primary permanent CH are due to thyroid dysgenesis (TD). However, a genetic cause is identified in less than 5% of CH due to DT.Methods: We performed WES (Whole Exome Sequencing) for siblings with childhood-onset TD and we analy...

Background: Twenty-three national healthcare networks for rare diseases were identified in 2014 as part of the French scheme on rare diseases. The rare endocrine disease national healthcare network FIRENDO (www.firendo.fr) includes six centers of reference with complementary fields of expertise certified between 2005 and 2006, 30 centers of competence covering all French regions, 18 research and 37 diagnostic laboratories, 5 national learned...

Three patients from two unrelated families in Malta; one consanguineous (siblings: Patient 1, male and Patient 2, female) and one non-consanguineous (Patient 3, male), manifested hypogonadotropic hypogonadism with delayed puberty, intellectual disability, scoliosis, and ataxia with cerebellar hypoplasia on MRI. GnRH tests revealed low peak LH and FSH concentrations in the patients: Patient 1; LH 2.3 IU/L, FSH 4.4 IU/L (14.3y), Patient 2; LH 3.6 IU/L, FSH 6.4 IU/L (12.5y), Pati...

Background: Primary ovarian insufficiency (POI) is genetically mediated in up to 30% of cases. Many genes associated with POI have roles in early ovary developmental processes, including meiosis.Objectives: We investigated the genetic mechanism underlying early-onset POI in three young women presenting with absent puberty: two sisters from a consanguineous pedigree and a third unrelated proband.<st...

Background: CFRD is a unique subtype of diabetes mellitus, distinct from type 1 and type 2, harbouring β-cell dysfunction and β-cell loss and insulin resistance. Modulator therapies directly target the underlying defect of CF, modulating or correcting the function of the CFTR gene (mutation-specific). Few studies investigated the effect of modulators on CFRD and glucose metabolism. We performed an observational study on the short-term effects of the ...

Background: CPP is commonly treated with triptorelin, a gonadotropin-releasing hormone (GnRH) analogue. It is available as 1-month and 3-month prolonged-release (PR) formulations, but only the former is approved for CPP in China. Overseas studies have proved the efficacy and safety of triptorelin 3-month PR formulation; this study evaluated efficacy and safety in Chinese children with CPP.Methods: In this 12-month, open-...

Introduction: Le diabète de type 1 est l’endocrinopathie la plus fréquente chez l’enfant. Son incidence est en nette progression dans le monde. L’enfant diabétique nécessite une hygiène de vie adaptée et le suivi par une équipe pluridisciplinaire composée de pédiatre spécialiste en diabétologie, psychologue, diététicien, infirmier spécialisé.Objectif: Determiner les...

NMDA (N-Methyl-D-aspartic acid) receptors have been shown to control the timing of sexual maturation in laboratory animals. Therefore, variants in genes impacting NMDA receptor signaling might be predicted to affect human puberty. We studied an extended family with extremely delayed puberty (menarche at 16.5 - 18 years for female family members and pubertal onset at 16 years for male family members). Exome sequencing revealed a rare missense variant (F900V) in DLG2, w...