ESPE Abstracts

Objectives: Estrogen is a key hormone to promote epiphyseal closure. So the inhibition of estrogen production can prolong the growth time of adolescent children. Therefore, aromatase inhibitors can be applied to adolescent children who has older bone age. In addition to reduction of the estrogen levels, it can promote linear growth. This study analyzed the safety and efficacy of letrozole in children for clinical reference.Method...

Background: Silver Russell syndrome (SRS) is an imprinting defect disease.Objective: To study clinical characteristics and imprinting defects in Chinese children with SRS.Methods: Forty-nine SRS cases were studied retrospectively. Out of these 49 cases, 36 were available to be detected chromosome 11p15 imprinting defects and 21 cases were detected uniparental disomy of maternal chromosome 7 (UPD(7) mat).Resul...

Background: The growth pattern of normal children was inappropriately used to evaluate those who with DSD.Objective: To understand growth and development of the 46, XY disorders of sex development (DSD) children, drawing height, weight and BMI curve of children with 46, XY DSD at the age of 0–16.Method: The registration database was used in this study. Non- CAH 0-16 years old 46, XY DSDs were collected. Growth curves were fitt...

Wolf-Hirschhorn syndrome is a genomic disorder caused by 4p16.3 deletion with facial dysmorphology, growth retardation, developmental/intellectual delay and seizures. After 165 kb critical region encompassing NSD2 was identified, most recently, three NSD2 loss of function variants was uncovered in patients with overlapping phenotype with Wolf-Hirschhorn syndrome. In our study, a NSD2 variant, c.1577dupG (p.Asn527fs*14) was identified in two patie...

Objective and hypotheses: The purpose of this research is to establish reference intervals for the steroid hormones of 6 to14 year-old normal male children using LC-MS method; study the variation pattern of steroid hormones in terms of different ages and Tanner stages of puberty.Method: A total of 1175 male children from 6 to 14 years old from Shunyi District, Beijing, have participated in this research, with 820 children determined as normal-weight. Pre...

Background: Bartter syndrome (BS) and Gitelman syndrome (GS) have similar clinical manifestations. It’s hard to be distinguished by the symptoms and laboratory, even though the genetic analysis cannot identify them precisely. The precise diagnoses associate with the right treatment and prognosis. Hypercalciuria usually involved with neonate type Bartter syndrome, and hypomagnesemia with Gitelman syndrome.Objective a...

Background: SRS is a typical epigenetic disease. Approximately 40% of patients can not be detected genetic and epigenetic disturbances.Objective and hypotheses: To analysis whether there is unknown genes or imprinted genes associated with pathogenicity of SRS and to detect the fine mapping SRS hypomethylation position through the Illumina Methylation 450K chip to detect genome-wide methylation differences.Method: To detect genome-w...

Background: We investigate the efficacy and safety of two different treatments which have not been evaluated in peri-puberty boys with HH.Objective and hypotheses: To assess the effectiveness and safety of pulsatile GnRH or hCG treatment in adolescent boys with hypogonadotropic hypogonadodism.Method: 12 patients received 8–10 μg of GnRH, subcutaneously injected every 90 min using a pump. Another 22 patients received hCG, ...

Background: Nearly half of SRS epigenetic etiology is unknown. Effect of GH in SRS is not exact.Objective: To determine novel gene or imprinted gene associated with pathogenicity of Silver–Russell syndrome (SRS) through detection genome-wide methylation differences. To observe GH efficacy in SRS and the relationship between GH and epigenetic changes.Method: To detect genome-wide methylation site through the Illumina 450K methy...

Objective: To report the clinical characteristics, diagnosis, treatment and genetic analysis of a case of X-linked acrogigantism(X-LAG).Methods: The clinical information of a 4-year-old girl due to “growth acceleration for 2.5 years, breast overflow for 3 months, accompanied by intermittent convulsions twice” was retrospectively reported, and peripheral blood DNA was collected for whole exome sequencing and e...