ESPE Abstracts

Introduction: X-linked ichthyosis is an inherited disorder of keratinization due to steroid sulfatase deficiency. It may be part of a contiguous gene syndrome characterized by the presence of several clinical features including hypogonadism, Leri-Weill syndrome, short stature, chondrodysplasia punctata, mental retardation, epilepsy, Dandy-Walker malformation and ocular albinism. It is due to microdeletions of Xp22.3. We report observations of two siblings with syndromic x-link...

Introduction: Adrenoleukodystrophy (ALD) is a rare X- linked disease caused by a mutation of the peroxisomal ABCD1gene. It is a progressive condition with a variable clinical spectrum that includes primary adrenal insufficiency, axonal demyelination and the accumulation of high levels of very long chain fatty acids (VLCFA) in the plasma and tissues.Methods: It’s a retrospective study of all cases of X-linked ALD who...

Background: Type 2 diabetes (T2D) is an emerging disease in the pediatric population. T2D is associated with metabolic-associated fatty liver disease (MAFLD). High-density lipoproteins (HDLs) are lipoproteins that are believed to have atheroprotective properties that reduce the risk of cardiovascular disease (CVD). Current evidence suggests that the physicochemical and functional features of HDLs may play a key role in the pathogenesis of atherosclerosis.<...

Background: Adrenoleukodystrophy (ALD) is a genetic disease associated with demyelination of the CNS, adrenal insufficiency, and accumulation of very long-chain fatty acids in tissue and body fluids.Objective: To research the clinical features, laboratory tests, imaging examinations and treatment on children who suffer from X-linked ALD. Also aim at revealing the correlation between the severity of disease and level of very long chain fatty acids (VLCFAs...

Background: Among 46,XY individuals, androgen insensitivity syndrome (AIS) due to deleterious variants of the androgen receptor (AR) gene is one cause for a difference of sexual development (DSD). Typically, individuals with complete androgen insensitivity syndrome (CAIS) present with female external genitalia and palpable labial masses. Whereas most patients carry germline variants inherited in an X-linked manner, approximately 30% of patients manifest de novo variants. We de...

Context: X chromosome inactivation (XCI) is a process in which one of the two X chromosomes in a female is randomly inactivated in order to correct gene dosage between males and females. However, about 15% of genes escape from XCI (termed escapees), and 10% of genes are variably inactivated (variable genes). The mechanism of inactivation and escape remains to be revealed. The promoter regions of escapees are hypomethylated compared to those of the inac...

A rare case of a 4-year-old boy with a SRY-positive 45, X karyotype was presented. Family history of the child was not remarkable. His height and weight were -2.1 SD and -1.4 SD, respectively. Physical examination revealed a well-developed penis with hypospadias. His right testis was in the scrotum and the left testis was not palpable. In previous inguinal exploration recordings, unilateral testicular agenesis on the left side were noted. The right testis was biopsied and prep...

Background: Adrenoleukodystrophy (ALD) is an X-linked disease characterized by impaired β-oxidation of very long-chain fatty acids (VLCFA) and in the most severe cases by inflammatory demyelination in the brain, adrenocortical insufficiency (AI), and death. Seven phenotypes were described, with a higher prevalence of the cerebral forms.Case report: We report two cases of ALD with different evolution, in February 2014. First case, an 11 years old boy...

Background/Aim: Parents wanting to predict adult height (AH) often resort to the old practice of doubling a boy’s height at age 2 years or a girl’s height at 18 months. We coined this the ’Grandma prediction’ (GMP1). It provides predictions with mean absolute error (MAE) 5.9 and 5.2, standard deviations of residuals (sdRES) 4.1 and 3.6, and Pearson correlation r=0.68 and 0.67 for boys and girls, respectively. The recent sophist...

Introduction: X-linked hypophosphatemic rickets (XLHR) represents the most common form of genetic hypophosphatemia and causes rickets in children because of increased FGF23 secretion and renal phosphate wasting. Even though cranial vault an craniovertebral anomalies of potential neurosurgical interest, namely early closure of the cranial sutures and Chiari type I malformation (CM-I), have been observed in children with XLH, their actual incidence and character...