ESPE Abstracts

Background: severe primary insulin-like growth factor-1 deficiency (SPIGFD) is a rare growth disorder. Recombinant human insulin-like growth factor (IGF-1) (rhIGF-1; Increlex® [mecasermin]) replacement therapy is EU and US-approved for treating growth failure due to SPIGFD. The long-term therapeutic objective of rhIGF-1 treatment in SPIGFD is to improve adult height (AH). Objective: to describe the characteristics, safety and effectiveness data ...

Background: severe primary insulin-like growth factor-1 deficiency (SPIGFD) is a rare growth disorder, for which insulin-like growth factor-1 (IGF-1) generation test (IGFGT) is debated as a complementary diagnostic analysis. Diagnostic workup for SPIGFD varies geographically and diagnosis is delayed by the rarity of the condition (<1/10,000). Evaluation of real-world practices of IGFGT could help facilitate diagnosis and test use. Objective: to describe rea...

Indels are highly abundant in human genomes and have contributed massively to genome evolution. However, the role of indels and their underlined mechanisms of mutagenesis in Mendelian disorders still needs to be appreciated. To explore the contribution of indels in a monogenic disorder, we analyzed all indels already described in the AR gene, including three novel indels found in our cohort. We analyzed the indel distribution through the AR coding region, compared wit...

Background: The Global Increlex® Registry (NCT00903110) monitors real-world safety and effectiveness of recombinant human insulin-like growth factor (rhIGF-1; Increlex® [mecasermin]) in severe primary IGF-1 deficiency (SPIGFD). Patient characteristics, effectiveness and safety data from 2008–2023 are described.Methods: Descriptive analyses of registry data from children/adolescents age...

Background & aim: Biallelic thyroglobulin (TG) gene variants can cause congenital hypothyroidism (CH), usually presenting with neonatal goiter and permanent in duration. In cases where biallelic truncating TG variants are present, serum TG levels are undetectable, while monoallelic or biallelic missense mutations manifest with circulating TG. Here, we present a case of transient CH resulting from TG deficiency, stemming from compound heterozygosity for a m...

Background: In monogenic diabetes due to KCNJ11 and ABCC8 mutations that impair KATP- channel function, sulphonylureas improve long-term glycaemic control. Although KATP channels are extensively expressed in the brain, the effect of sulphonylureas on neurological function has varied widely. We evaluated published evidence about potential effects of sulphonylureas on neurological features, especially epilepsy, cognition, motor function and muscular tone, visuo-...

Background: Severe primary insulin-growth factor-1 (IGF1) deficiency (SPIGF1D) is a rare cause of short stature. Diagnosis is based on low basal IGF1 concentration, short stature, normal or elevated growth hormone concentrations and absence of any secondary causes of growth failure. Thanks to advances in next-generation sequencing (NGS) technologies, genetic etiology of SPIGF1D is expanding.Objectives: • Identify th...

Introduction: Most patients with endocrine diseases diagnosed during childhood require long-term continuity of care. A lack of regular medical follow-up visits may be associated with impaired long-term health outcomes, with greater risks of morbidity and mortality. The importance and challenges of the transition from pediatric to adult healthcare are well recognized, but few studies have considered loss to follow-up during pediatric care. We investigated the p...

Background: Thymus transplantation is undertaken for conditions associated with severe immunodeficiency. These comprise a number of genetic and syndromic associations including 22q deletion syndrome, CHARGE association, diabetic embryopathy, and other rarer conditions. Autoimmune thyroid dysfunctions (Hashimoto's thyroiditis and Graves' Disease) are described in the literature as the most common autoimmune disease after thymic transplant.<p class="...

Background: Thymus transplantation is undertaken for conditions associated with severe immunodeficiency. These comprise a number of genetic and syndromic associations including 22q deletion syndrome, CHARGE association, diabetic embryopathy, and other rarer conditions. These conditions may also be associated with hypoparathyroidism and patients are therefore at risk of severe hypocalcaemia. There are no published guidelines for calcium replacement in these patients during the ...