ESPE Abstracts

Background: Osteogenesis imperfecta (OI) due to COL1A1 and COL1A2 mutations is the most common cause of primary osteoporosis.Case presentation: We present a 10-year-old girl with a history of skeletal fragility, starting in the perinatal period. Her parents are not consanguineous and there is no family history of early osteoporosis. To date, she has sustained nineteen low-energy, long bone fractures and she has skeletal deformities (leg length discrepanc...

Background: Primary adrenal insufficiency (PAI) is most commonly congenital in children. PAI is genetically heterogeneous with some gene defects causing syndromic disease. A third of patients have no genetic diagnosis meaning their prognosis is uncertain. We recently investigated families with a novel combination of PAI and steroid resistant nephrotic syndrome.Objective and hypotheses: To discover the genetic defect underlying this syndrome.<p class=...

Background: Studies on the follow-up of 46,XY partial gonadal dysgenesis (PGD) patients till adulthood are scarce and it is important to provide information to parents on the prognosis of gonadal dysgenesis.Objective and hypotheses: To analyze the long term outcomes of 46XY PGD patients in both social sexes regarding testosterone production, social sex adaption and genotype.Method: Retrospective longitudinal study conducted at Hosp...

Background: HABP2 is an extra-cellular matrix protein involved in cell proliferation. Recently, HABP2 was proposed as responsible for the familial clustering of Differentiated Thyroid Carcinoma (FDTC). However, its involvement was questioned by subsequent studies revealing high prevalence HAPB2 polymorphisms (SNPs) in the general population, leaving its pathogenic role uncertain.Objective and hypotheses: To identify genetic HABP2</e...

Background: The contribution of mutations in paired box domain (PAX8) gene in children with congenital hypothyroidism (CH) and thyroid dysgenesis (TD) still remains a subject of interest of researchers. While quantitative PCR and direct sequencing concentrate on single gene fragment analysis and identification of point mutations, multiplex ligation-dependent probe amplification (MLPA) analysis might improve the detection rate of PAX8 mutations in patients wit...

Objective: To explore the genetic basis for a Chinese three-generations pedigree affected with Severe Short Stature with a mild form of Geleophysic Dysplasia Type 2（GD2）Methods: We collected 11 related family members from a Chinese 3-generation pedigree with severe short stature with a mild form of Geleophysic Dysplasia Type 2 GD2. Clinical data of the 11 family members was collected．With genomic DNA...

Background: Genetic diversity of mutations in the CYP21A2 gene is the main cause of the monogenic Congenital adrenal hyperplasia (CAH) disorder. On chromosome 6p23.1, the CYP21A2 gene is partially overlapped by the TNXB gene and reside in tandem with their highly homologous corresponding pseudogenes (CYP21A1P and TNXA), which leads to recurrent homologous recombination.Methods and Results: The genetic s...

Background: Vitamin D-dependent rickets type 3 (VDDR3) is a rare autosomal dominant inheritance disease, which is caused by the gain-of-function mutation in CYP3A4 (c.902T>C p.Ile301Thr).Case Presentation: We report the case of a 32-month-old boy presented with discomfort of both knee-joints, poor mobility, and gait abnormality when running. Laboratory examinations revealed low concentrations of serum calcium, phospho...

Background and Objective: Homozygous mutations in the “Centrosomal Protein-19 (CEP19)” gene are extremely rare causes of early-onset severe monogenic obesity. We, herein, report three siblings with CEP19 mutation.Case Presentation and Method: The index case was a 12-years-old female who presented with severe obesity (BMI:62.7kg/m2), metabolic syndrome and diabetic ketoacidosis. Her non-identical twin female s...

Wieacker-Wolff syndrome, first described in 1985, is a rare congenital syndrome caused by ZC4H2 mutation reported in 9 family and 6 sporadic cases to date. It is an X-linked recessive disorder characterized by congenital joint contractures, mental retardation, progressive neurologic muscular atrophy, scoliosis, and hypoglycemia. A nine-year-old boy with brain atrophy, mental retardation, scoliosis, developmental dysplasia of the hip, convulsions, and exotropia presented to our...