ESPE Abstracts

Background: There are limited data on differences in height, bone mineral density (BMD) and pubertal delay between homozygous and heterozygous carriers of IGFALS defects.Objective and hypotheses: To describe clinical and laboratory features and BMD of homozygous and heterozygous carriers of a novel IGFALS mutation in a large Kurdish family.Method: Index cases were two first degree cousins presenting with short stature, low IGF1, ve...

Background: STAT5B deficiency is characterized by severe postnatal growth failure, low IGF1, elevated levels of GH and prolactin, and immunodeficiency. To date, only ten patients with seven different mutations have been described.Objective and hypotheses: Describe clinical characteristics of a novel homozygous frameshift mutation in STAT5B.Results: A 17-year-old female was referred for proportionate short stature and prima...

Background: IGSF1 deficiency has been recently found to be a novel cause of x-linked central hypothyroidism, macroorchidism and delayed puberty.Case presentation: We present a family, in which the proband was diagnosed with congenital central hypothyroidism by neonatal screening and treated accordingly. Further pituitary examination revealed an unmeasurable prolactin level, normal IGF1, normal cortisol and no abnormalities of the pituitary on MRI. The pa...

Background: Central hypothyroidism (CeH) is a rare thyroid hormone deficiency due to an insufficient stimulation of a normal thyroid gland. Candidate genes for isolated CeH include TSHβ, TRH receptor (TRHR) or IGSF1 genes while the combined pituitary hormone deficits (CPHDs) are the consequence of defects in embryonic pituitary transcription factors or in the prokineticin receptor 2 (PROKR2).Patients series: Here we report nine males (M) and 15 fema...

Introduction: Klinefelter syndrome (KS) is most common sex chromosomal aneuploidy in males. The typical clinical features are tall stature with long extremities, small testis, and learning disabilities. Three M syndrome is an extremely rare genetic disorder characterized by short stature, craniofacial abnormality and skeletal malformations. We report a unique case of short stature in KS due to three M syndrome.Case: A 9-...

Background and Aims: Coats plus syndrome (MIM # 612199) is a highly pleiotropic disorder particularly affecting brain, eye, bone and gastrointestinal tract. We describe the phenotype of a patient with severe growth failure where whole exome sequencing (WES) revealed compound heterozygosity for two mutations in the CTC1 gene.Patient and Methods: The patient, the fourth child of healthy non-consanguineous parents, was born...

Background: Preterm survivors are found to exhibit deficits in several neurodevelopmental domains. It is unknown whether this could be explained by antenatal glucocorticoid treatment.Objective and Hypotheses: We studied whether antenatal glucocorticoid treatment is associated with behaviour and IQ in young adults born preterm. In addition, we studied whether these associations could be modified by the R23K and N363S polymorphisms in the glucocorticoid re...

Background: The immunoglobulin superfamily member 1 (IGSF1) gene encodes a plasma membrane glycoprotein enriched in pituitary and testes. Loss-of-function mutations in IGSF1 cause an X-linked syndrome of central hypothyroidism (CeH), macroorchidism, and delayed pubertal rise of testosterone despite normal timing of testicular growth. This syndrome was discovered in patients with CeH; therefore, it is presently unknown whether IGSF1 mutations also cau...

Background: Childhood obesity is associated with advanced bone age (BA), leading to an altered growth pattern. Previous results of studies suggest that androgens, estrogens, sex hormone binding globulin (SHBG) and insulin are responsible for this phenomenon, but results are contradictory and might be biased by confounders.Objective and hypotheses: To investigate the independent effects of estrogens, androgens, SHBG and insulin parameters on BA advancemen...

Introduction: Ox in a dose of 0.03-0.05 mg/kg per day in addition to GH treatment significantly increases adult height in TS more than GH alone. To date, the long term effects of Ox in childhood on bone mineral density (BMD) in adulthood are unknown.Methods: This is a follow-up study of a previous randomized controlled trial, performed in the Netherlands. In the original trial, 133 girls were treated with GH. Placebo (Pl...