ESPE Abstracts

An association between Turner syndrome (TS) and Congenital Adrenal Hyperplasia (CAH) due to 21-hydroxylase deficiency is rare. TS is caused by partial or complete loss of the second sexual chromosome which leads to genital system malformation and infertility. 21-hydroxylase deficiency is a well-known cause of disorder of sexual development in genotypic female neonates.The aim of our study is to report this patient and stress this rare possibility. A 8-month-old patient sufferi...

Quantitative analysis of endogenous and exogenous steroid hormones is an important step for our understanding of the causes of endocrine disorders in pediatric. In this study, we developed a method to simultaneously quantify endogenous and exogenous steroids in pediatric urine and plasma. Ultra-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used to simultaneously quantify steroid hormones in children plasma and urine. Under the optimum conditions, th...

Background: Noonan syndrome (NS) is generally considered an autosomal dominant, multisystemic disorder caused by dysregulation of the RAS/mitogen activated protein kinase (MAPK) pathway. The latest research confirmed the existence of a form of Noonan syndrome that is inherited in an autosomal recessive pattern and identify biallelic mutations in LZTR1. In this study, we diagnosed 55 Chinese NS Children via targeted sequencing or whole exome sequencing (TS/WES).<p ...

Background: The incidence rate of maturity onset diabetes of the young (MODY) and the proportion of different types of MODY will be different in different countries and races. GCK, HNF1A, and HNF4A are the three most common types of MODY, but the occurrence of other rare MODY subtypes in Chinese children is unknown. Therefore, studying the case group of MODY in Chinese children can help deepen understanding of MODY, early identification, and precise treatment....

Background: Noonan syndrome (NS) is a common autosomal dominant/recessive disorder. No large-scale study has been conducted on NS in China, which is the most populous country in the world.Methods: Next-generation sequencing (NGS) was used to identify pathogenic variants in patients that exhibited NS-related phenotypes. We assessed the facial features and clinical manifestations of patients with pathogenic or likely patho...

Background: Kabuki syndrome (KS) is a rare dominant disorder of transcriptional regulation with a complex phenotype including cranio-facial dysmorphism, intellectual disability, developmental delay, hypotonia, failure to thrive, short stature and variable cardiac and renal anomalies. Mutations in either KMT2D or KDM6A cause KS. While the phenotype of KS has been reported in many ethnicities, little is known about the phenotypic spectrum of KS...

Objective: Inactivating mutations in the gene encoding the alpha-subunit of Gs (GNAS) gene, which consists of exons 1-13 and encodes the alpha-subunit of the stimulatory G protein (Gsa), are associated with several clinical syndromes, including pseudohypoparathyroidism (PHP), pseudopseudohypoparathyroidism (PPHP), and progressive osseous heteroplasia (POH).Method: We documented patient clinical characteristics a...

Objective: To enhance the understanding of the clinical phenotypes of patients with SOX2 gene mutations.Method: A retrospectively analysis of the clinical manifestations and the laboratory results of a child diagnosed as idiopathic hypogonadotropic hypogonadism(IHH) by whole exome-gene sequencing and a review of relevant literatures.Results: A 12-year-old boy clinically manifested short stature, mental retardation, a histo...

Context: Diagnosis of non-chromosomal type disorders of sex development (DSD) has long been challenging. There is still no research on overview of a large Chinese DSD cohort.Objective: To determine the etiologic diagnosis through unbiased large-scale panel sequencing and whole-exome sequencing (WES) within a large Chinese DSD cohort.Design: Patients were recruited according to the ...