ESPE Abstracts

Introduction: Growth is a complex process influenced by several genetic factors both pre and postnatal, in which 80% of the height variation is explained by genetic factors. Nevertheless, the standard medical evaluation of short stature (SS) relies upon physical examination and laboratory parameters and identifies a pathological cause of SS in 1–40% of individuals. Rearrangements affecting chromosome 15 are rare and affected patients show a variety of nonspecific features...

Background: A portion of 160 kb on Xp21.2 is defined as dosage sensitive sex reversal, including NR0B1, which is considered the most likely candidate gene involved in XY gonadal dysgenesis if overexpressed. The excess of NR0B1 gene product seems to disturb testicular development by down regulating NR5A1, WT1, and SOX9. Xp duplication causes insufficient SRY expression leading to testis development failure. However, NR0B1 si...

Background: Pediatric bone marrow transplantation (BMT) can lead to endocrine dysfunctions due to common pre-operative regimens involving chemo and radiotherapy.Objective and hypotheses: To evaluate the prevalence an time-of-onset of endocrine dysfunctions after BMT in children and adolescents.Method: A retrospective cohort-study design was performed. The inclusion criteria were: <18 years of age at the time of their allogenic ...

Background: Paediatric bone marrow transplantation (BMT) can lead to endocrine dysfunctions due to common pre-procedure protocols involving chemo and radiotherapy.Objective and hypotheses: To evaluate the prevalence and time-of-onset of endocrine dysfunctions after BMT in children and adolescents.Method: A retrospective cohort-study design was performed. The inclusion criteria were: age range less than 18 years old at the time of t...

Background: 45,X/46,XY mosaicism is a rare karyotype with a broad phenotypic variation. In patients with a male or predominantly male phenotype, impaired genital development and statural growth have been observed, but little is known about long-term outcomes. Larger multicenter studies are needed.Objective and hypotheses: The aim of this study is to investigate long-term outcomes, namely gonadal function, growth and co-morbidities, in a larger group of m...

Background: Several factors (bone age, BMI, target height, age) have been previously demonstrated to impact on GH response during stimulation tests, none of them proving to be of crucial importance.Objective and hypotheses: To analyze the influence of several anthropometric and laboratory parameters on peak GH response during insulin and clonidine stimulation tests.Method: Retrospective review of 265 patients who underwent GH stimu...

Background: Constitutional delay of growth and puberty (CDGP) is one of the most frequent norm variants in children presenting with short stature. Knowing the height, growth, and weight pattern of CDGP in the first years of life is important to distinguish CDGP from growth hormone deficiency (GHD) or other diseases.Methods: We studied height and weight in the first 5 years of life in 54 boys with CDGP including measureme...

Background: For children with retarded bone ages such as in constitutional delay of growth and puberty (CDGP) there are no specific methods to predict adult height based on bone age. Widely used methods such as Bayley-Pinneau (BP) tend to overestimate adult height in CDGP. Therefore, we aimed to develop a specific adult height prediction model for boys in pubertal age with retarded bone age >1 year.Methods</...

Background: Adherence to GH treatment is a challenge.Objective and hypotheses: We analysed the impact of treatment duration, treatment success, treatment indication, age, gender, pubertal stage, and height on treatment adherence (TA) to optimise treatment success.Method: Based on the easypod autoinjector used in the Saizen-online prospective, multicenter, open-label, noninterventional study we analyzed TA in 6 months periods. TA wa...

Longitudinal growth is driven by endochondral ossification at the growth plate, where chondrocytes undergo a well-organized cellular differentiation process from stem-like progenitors to rapidly-proliferating transit-amplifying cells and to hypertrophic chondrocytes. Numerous recent studies have demonstrated that epigenetic modifications play a crucial role in human development and childhood growth. For example, Brachydactyly mental retardation syndrome (BDMR) is caused by hap...