ESPE Yearbook of Paediatric Endocrinology

To read the full abstract: Eur J Pediatr 2017; 176:873-879Achondroplasia (ACH) is the most common genetic form of disproportionate short stature, occurring in 1:15,000 –1:40,000 live births [28]. Most patients have a gain of function mutation in the transmembrane domain of the fibroblast growth factor receptor 3 (FGFR3), leading to prolonged intracellular MAPK signalin...

To read the full abstract: J Clin Invest 2018;128:1913-1918Two rare genetic forms of vitamin D–dependent rickets exist: VDDR-1 caused by mutations in the genes encoding either the renal 1-α hydroxylase (CYP27B1: VDDR-1A) or the hepatic 25-hydroxylase (CYP2R1: VDDR-1B) and VDDR-2 caused by mutations in the vitamin D receptor signalling due to mutations in the gene encoding the ...

To read the full abstract: J Clin Endocrinol Metab 2017; 102 (8): 2670-2677These case reports lead to an important conclusion which changes our diagnostic work-up of early-onset childhood obesity. The authors shows that thorough work-up of clinical cohorts, combined with genetic and epigenetic analyses, can define new characteristic features of known disorders. PHP1A, and surprisingly also PHP1B,...

Brief summary: Neonates of mothers suffering from Graves’ Disease during pregnancy are at risk for hyper- or hypothyroidism postnatally. The risk for hypothyroidism of neonates exposed to maternal anti-thyroid drugs until birth is unknown. This large retrospective study aimed at investigating 1) the incidence of hypothyroid neonates in a large cohort of mothers treated with anti-thyroid drugs until birth, and 2) identify a cutoff for maternal anti-thyroid drug doses assoc...

Brief summary: In 2021 and 2022, two important publications on pediatric thyroid carcinomas revealed a distinct molecular landscape compared to adult thyroid carcinomas (1,2). Pediatric differentiated thyroid carcinoma was mainly caused by fusion oncogenes, especially in children younger than 10 years (93%), compared to children aged 10–15 years (28%) and 15–20 years old patients (14%). In contrast, PTC due to BRAF mutations showed increasing frequency with age (7%, ...

Brief summary: In this study the authors reported the adult height and timing of puberty of a cohort of Danish children born small for gestational age (SGA) and treated with rhGH in comparison with national growth standards. rhGH treatment significantly increased height SDS in adulthood as compared to the height SDS at treatment start. Age at peak height velocity did not differ compared with the reference cohort, although peak height velocity was reduced in SGA subjects. SGA b...

Brief summary: In this study, 10 145 children of 1–8 years of age, selected from a prospective systematic cohort study and stratified according to HLA-risk categories for type-1-diabetes (T1D), underwent a combined evaluation of pancreatic autoimmunity, glucose metabolism and anthropometry at different timeframes. Diagnosis of T1D occurred in 131/10,145 children (1.3%). Faster height growth, both before and after age 3 years, was significantly associated with the appearan...

In Brief: Prolonged bisphosphonate treatment is associated with atypical femoral fractures (AFF). However, AFFs also occur in bisphosphonate-naïve patients, so bisphosphonate is not a prerequisite for AFF. This study found a higher yield of (likely) pathogenic variants in AFF patients with a clinical suspicion of monogenic bone disorder, stressing the importance of careful clinical evaluation of patients who present with this condition.Commentary: A...

In Brief: The authors use cell-tracing of Axin2-positive chondroprogenitor cells in the resting zone during and after food restriction to demonstrate that nutrient availability influences the balance between accumulation and differentiation of resting zone chondrocytes and that this is influenced by Igf-1.Commentary: Catch-up growth is the rapid growth that occurs after growth-inhibiting conditions have been cured or removed. The molecular mechanism for ...

Brief summary: This prospective longitudinal study compared serum reproductive hormone levels and testicular volume around the onset of puberty between cryptorchid and healthy boys.Congenital cryptorchidism is the most common congenital anomaly among newborn boys, and still little is known about pubertal testicular function and serum reproductive hormone levels during puberty in this population.Pubertal follow-up with clinical exam...