ESPE Abstracts

Background: Recently, the first patients with resistance to thyroid hormone (RTHα) due to inactivating mutations in TRα1 have been identified. These patients are characterized by growth retardation, delayed bone development, mild cognitive defects, delayed motor development and abnormal thyroid function tests.Objective and hypotheses: We hypothesized that the phenotype of a TRα mutation depends on its location, e.g. if it is present only i...

Background: Individuals with the ultra-rare genetic disorder FOP experience progressive heterotopic ossification. Median age at diagnosis is 5 years; patients are supported by multiple specialties. Most patients become immobilised by the third decade of life, requiring lifelong assistance. We characterise AADA use as an indicator of disease severity in younger individuals with FOP enrolled in a 36-month, prospective, global NHS (NCT02322255).<p class="abst...

Introduction: Advances in diagnostic capability in the field of DSD hold great promise but need a regular review.Objectives: To study the range of endocrine and molecular genetic variation in a group of boys undergoing investigation for XY DSD.Methods: 157boys with median age of 0.9yrs (range,0,18) evaluated by the DSD Diagnostic Board in Glasgow from 2016to 2021 were included. Seq...

Background: FOP is an ultra-rare, severely disabling genetic disorder characterised by progressive heterotopic ossification. The median age at diagnosis is 5 years and patients are supported by multiple specialties. We describe normal long bone growth changes and incidence of bone abnormalities in participants with FOP aged <18 years in a 3-year, prospective, global NHS (NCT02322255).Methods: Individuals with FOP age...

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...

Background: Recently, T3 receptor alpha (TRα) mutations have been identified in a number of patients with varying degrees of growth impairment, delayed development, constipation, increases in serum T3 and decreases in T4 and rT3.Objective: To determine the spectrum of clinical and functional consequences of novel TRα mutations.Method: Clinical assessment and biochemical, imaging...

Background: Congenital adrenal hyperplasia (CAH) due to 11β-hydroxylase deficiency (11OHD), a rare autosomal recessive disorder, is the second most common form of CAH, resulting in glucocorticoid deficiency, hyperandrogenism and hypertension.Objective and hypotheses: To investigate the specific CAH mutations in CYP11B1 gene and to examine for genotype-phenotype correlations.Method: 21 patients (n=9, 46, XX; <...

Background: FOP is an ultra-rare, severely disabling genetic disorder characterised by progressive heterotopic ossification (HO) following flare-ups. The median age at diagnosis is 5 years, and patients are managed by multiple specialties. No study to date has provided a longitudinal evaluation of FOP. Final data are presented for participants, aged <25 years, enrolled in the first 36-month, prospective, global natural history study of FOP (NCT02322255).</...

Introduction: Hypogonadotropic hypogonadism (HH) is a rare condition, where a definitive diagnosis is often hard to reach.Objectives: To describe the clinical, biochemical and genetic findings in cases with suspected HH in the West of Scotland who were referred for genetic analysis between 2016 and 2020.Methods: Information was collected on clinical assessment including family hist...

Scope: The assessment of the functional ovarian maturity in a group of girls with precipitated puberty.Method: Ovarian function was assessed in a group of girls with puberty precipitated (77 – group 1) compared with a group of girls with normal puberty (59 – group 2) according to development criteria accepted by the population of Romania. They calculated the incidence of menstrual disorders, changes in menstrual flow, presence of dysmenorrhoea ...