ESPE Abstracts

Background: Mutations in the gene encoding the natriuretic peptide receptor-2 gene (NPR2) are responsible for monogenic growth disorders. Loss-of-function variants cause extreme short stature and skeletal dysplasia. Gain-of-function mutations cause tall stature with - in some cases - macrodactyly of the great toes, a Marfanoid habitus, arachnodactyly and scoliosis. We describe a novel gain-of-function mutation in exon 8 of NPR2 in a family wi...

Down syndrome (DS) is characterized by a higher incidence of congenital hypothyroidism (CH) and a high prevalence of subclinical hypothyroidism (SH) early in life. Children and adults with DS have an increased risk of developing autoimmune thyroid disease, however CH and early SH cannot be explained by thyroid autoimmunity. The etiology of CH and early SH in DS remains to be elucidated. Considering the recently discovered genome-wide transcriptional and epigenetic alterations ...

Background: Isolated aldosterone synthase deficiency is a rare autosomal recessive disorder caused by pathogenic variants in CYP11B2. To date, more than forty different pathogenic variants in the CYP11B2 gene causing isolated aldosterone synthase deficiency have been identified. We report on a novel pathogenic CYP11B2 variant.Case report: The second child (male) of consanguineous, healthy parents, presented shortly after...

Background: The Easypod Connect Observational Study (ECOS) observational study follows children with GHD, SGA and Turner syndrome receiving r-hGH therapy for up to 5 years, with interim analyses each year. The easypod electromechanical auto-injector device enables accurate, real-world digital records of patients’ adherence to rhGH to be collected for evaluation.Objective and hypotheses: The primary objective of ECOS is to evaluate the level of adher...

The leptin melanocortin signaling pathway plays a pivotal role in body weight regulation within the hypothalamus. Gene mutations within this cascade are leading to early onset obesity and severe hyperphagia in rodents and humans. For the affected patients it is extremely difficult to stabilize body weight based on the persisting hunger feeling. Traditional treatment options (increased exercise, reduced caloric intake) are not effective in most cases. Therefore, there is a need...

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Background: Milk supplementation increases serum IGF-I concentrations in healthy children and the effect is attributed to elevation of insulin and/or direct effects of milk proteins. Low serum IGF-I concentrations are common among children with short stature and may be associated with GH deficiency but poor nutrition/malabsorption may also contribute. Effects of nutritional supplementation on serum IGF-I is poorly studied in short children.Aim: To invest...

Background: Delaying puberty with GnRHa in an attempt to improve final height in GH treated children is relatively common in clinical practice. Such treatment is only supported by one retrospective study in which pubertal start was relatively early.Objective and hypotheses: To retrospectively assess adult height in children with short stature treated with GH and receiving or not receiving GnRHa. We hypothesized that delaying puberty with GnRHa improves a...

Background: Disorders of sex development (DSD) can be caused by many hormonal and genetic defects. One rare condition is a mutation of the SRY-gene disturbing normal sex differentiation. Identical twins with this disorder of varying degree are presented to learn how difficult social sex assignment may be in such a case.Case presentation: Identical 46, XY twins were born in 1985 from non consanguineous, healthy parents of German origin. T...

Background: Herediter hypomagnesemia with secondary hypocalcemia (HSH) is a rare autosomal recessive disease caused by mutations in the transient receptor potential melastatin 6 (TRPM6) gene. Affected individulals present at early infancy with severe hypocalcemia and hypomagnesemia which leads to tetany and seizures.Objective and hypotheses: In this report, we want to present the clinical features, treatment regimen, follow-up of a patient with a novel h...