ESPE Abstracts

Background: Early tooth loss could be the consequence of the local or systemic diseases. We present an odontohypophosphatasia case with otosomal dominant mutation in ALPL gene.Objective and hypotheses: We report a case with odontohypophosphatasia and his family investigation.Method: Three-years-old boy admitted to our pediatric endocrinology clinic with toothloss without any other dental or gingival disease. His serum levels calciu...

Objective: To characterise clinical presentation of congenital isolated ACTH deficiency.Methods and results: Clinical and anthropometric data were obtained. Biochemical liver function parameters, blood glucose, insulin, TSH, free thyroxin (FT4), GH, cortisol, and ACTH levels were analyzed. POMC and TBX19 genes were analysed by Sanger sequencing. The girl was born at full-term with normal weight and length. The parents are cousins. At birth cra...

Background: Nonclassical 21-hydroxylase deficiency (NC21OHD) is one of the most common monogenic diseases. Its frequency varies significantly among different ethnic groups. In Russians the frequency of NC21OHD is unknown.Objective and hypotheses: To estimate the incidence of NC21OHD in Russia based on the carrier frequencies of the two most common mutations associated with this disease (V281L and P30L).Method: A total of 998 random...

Background: Central precocious puberty (CPP) results from activation of the hypothalamic-pituitary-gonadal axis before the age of 8 years in girls and 9 years in boys. The molecular basis of the maturation of this axis is still poorly understood. The MRKN3 gene located in the Prader-Willi syndrome critical region (chromosome 15q11–q13), inhibit factors stimulating pulsative. GnRH secretion. In 2013 inactivating mutations in the MRKN3 gene were discovered...

Background: Although the clinical presentations of congenital adrenal hyperplasia (CAH) have been studied in Saudi children, the literature review revealed no molecular report of 21-hydroxylase was published.Objective and hypotheses: The aim of this study was to determine the pattern of CYP21A2 gene-mutations of CAH in Saudi children.Method: Between January 2011 and March 2014 at King Fahad Military Complex, Dhahran, Saudi Arabia, ...

Human growth is a complex trait. A considerable number of gene defects have been shown to cause short stature, but there are only few examples of genetic causes of non-syndromic tall stature. Besides rare variants with large effects and common risk alleles with small effect size, oligogenic effects may contribute to this phenotype. Exome sequencing was carried out in a tall male (height 3.5 SDS) and his parents. Filtered damaging variants with high CADD scores were validated b...

Background: Mosaic variegated aneuploidy syndrome（MVA）is a rare genetic disease characterized by mosaic aneuploidies, intrauterine growth restriction, developmental delay, microcephaly, facial dysmorphism, mental retardation, and susceptibility to tumor. It is autosomal recessive and caused by mutations in BUB1B, CEP57, and TRIP13. This study hereby presents a 9-year-old girl with intrauterine growth restriction, short stature, microcephaly, faci...

Pseudohypodosteronism type 1 (PHA-1) is an inherited disease caused by the resistance of peripheral tissues to aldosterone, leading to severe salt loss in infants. This rare disease is caused by mutations in the amiloride-sensitive epithelial sodium channel subunits (ENaCs). Loss-of-function mutations in ENaCs lead to PHA-1, which is associated with neonatal salt wasting. PHA1 can be transmitted as autosomal dominant and recessive forms. Patients with the autosomal dominant fo...

Introduction: Resistance to Thyroid Hormone (RTH) is a clinical syndrome characterized by impaired end-organ responsiveness to Thyroid Hormone (TH). The cardinal features of this syndrome are elevated serum levels of free THs with normal or high TSH, often with goiter and no clear symptoms of thyrotoxicosis. Mutations in the Thyroid Hormone Receptor beta (THRB) gene constitute the most frequent cause of RTH, defined as RTHβ.<p class="abstext"...

Objectives: To present Chung-Jansen Syndrome or CHUJANS by a de novo variant in the pleckstrin homology domain-interacting protein (PHIP) gene and compare the clinical phenotype with previous case reports; ②To provide a novel genetic detection methods with whole-exome sequencing(WES) and whole genome sequencing(WGS) and Sanger sequencing for rare genetic diseases.Patients and methods: Following collecting clinical...