ESPE Abstracts

Background: Immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome (IPEX) is caused by mutations in the Forkhead/winged helix transcription factor (FOXP3) gene and is a rare disorder that increasingly has gained attention as a model of genetic autoimmunity. We report two Chinese families with IPEX and the sequencing of the FOXP3 gene.Methods: Two unrelated Chinese cases with IPEX were investigated. In case 1, the proband was a 4 month-y...

The condition of being small for gestational age (SGA) poses significant risks to both infant development delay and chronic non-communicable diseases in adultood, especially cardiovascular diseases. Despite the known association between SGA and endothelial dysfunction, the precise pathogenic genes and underlying mechanisms driving this pathology have remained elusive. In this study, we conducted a comprehensive evaluation of endothelial dysfunction in SGA by their increased an...

Background: 1q21.1 microdeletion syndrome is a genetic disorder characterized by a spectrum of complex clinical manifestations, including neurodevelopmental abnormalities, short stature, and cardiac anomalies. However, the phenotypic heterogeneity of this condition poses a diagnostic challenge. We report a unique case of a patient who presented solely with short stature, which was later determined not to be caused by a 1q21.1 microdeletion after comprehensive ...

Background: Partial thyroxine-binding globulin deficiency (TBG-PD) is an endocrine defect with a prevalence of 1:4 000 in newborns. Due to the presence of a single TBG gene on the X chromosome.Objective and hypotheses: To investigate the clinical characteristics of twins with thyroxine binding globulin deficiency and to find SERPINA7 gene mutations.Method: Data related to clinical characteristics, serum biochemistry, gene mutations...

Background: Insulin resistance in obesity and type 2 diabetes is associated with abnormalities in mitochondrial oxidative phosphorylation in skeletal muscle. Whether mitochondrial function changes in hepatocytes with hereditary insulin resistance is not clear. Type A Insulin Resistance Syndrome (TAIRS) is a rare disorder characterized by severe insulin resistance, a condition in which the body's tissues and organs do not respond properly to the hormone ins...

Objective: Thyroxine binding globulin (TBG) is the most important thyroid hormone transporter in humans and is encoded by the SERPINA7 gene located on chromosome Xq22.2. By analyzing the genes of TBG-deficient patients, we aim to find a new molecular basis for the possible etiology of the disease.Design and Methods: 10 groups of subjects were enrolled in the pediatric department of the First Affiliated Hospital of Zhejia...

Introduction: Complex and ordered intracellular signal pathways play a significant role in sex determination in mammals, mediating the balance of gonadal development. A major pathway involved in the regulation of the male development is mitogen-activated protein kinase (MAPK) signaling pathway. To date, mutations of MAP3K1 gene have been found to account for approximately 15%-20% of 46, XY gonadal dysgenesis (46, XY GD)....

Objective: To investigate the clinical and molecular characteristics of a girl with 17α hydroxylase/17,20-lyase deficiency, of which, onset was as rhabdomyolysis and hypokalemia. And then we identified the functional consequences of two novel CYP17A1 mutations.Materials and Methods: A 11 years old girl, 46,XX karyotypes, presented with rhabdomyolysis, hypokalemia and hypertension. She had elevated levels of plasma adrenocorticotropic hormone, serum ...

Background: Congenital hyperinsulinism (CHI) is the most important causes of persistent hypoglycemia in infants during the first few days after birth.Objective and hypotheses: We report an 11-day-old female infant admitted with persistent hypoglycemia since 11 h after born.Method: Multiple tests and imageological examinations were used to detect the cause of hypoglycemia. A whole-body PET CT-scan with [⊃F]-L-di...

Objective: To investigate the clinical and molecular characteristics of a girl with aldosterone synthase deficiency type II (ASDII). We also identified the consequences of a novel splice site mutation in the CYP11B2 gene.Materials and Methods: A4-month-old girl presented with vomiting, diarrhea, and failure to thrive. Her 17α-OHP, cortisol, renin, and aldosterone were all in the normal range, and the ACTH stimulatio...