ESPE Abstracts

Introduction: Rubenstein-Taybi Syndrome (RSTS)is a rare multiple congenital anomaly syndrome with a prevalence of 1:100,000 to 1:125,000. It is classically characterized by postnatal growth deficiency, microcephaly, learning difficulties, increased risk of tumour formation, broad thumbs and halluces and dysmorphic facial features including highly arched eyebrows, long eyelashes, downslanting palpebral fissures, broad nasal bridge, beaked nose, high arched palate and characteri...

Background: TRNT1 (CCA-adding transfer RNA nucleotidyl transferase) enzyme deficiency is a newly reported inborn error of metabolism caused by defective post-transcriptional modification of mitochondrial and cytosolic transfer RNAs (tRNAs). TRNT1 mutations cause a complex multisystem disease leading to manifestations in most organs. We here described the effect of growth hormone (GH) treatment on short stature in two siblings with TRNT1 deficiency.Case p...

Aggrecan, encoded by ACAN, is a major proteoglycan component in the extracellular matrix of the growth plate. At least 25 pathological ACAN mutations have been identified in patients with highly variable phenotypes of syndromic or non-syndromic short stature. A 6-year-old boy was referred to our Centre for short stature (height 103.60 cm, −3.14 SDS) in familial short stature. Mid-Parental target height was 161.15 cm (−2.38 SDS); His father (height 167.3 cm) is from...

Hutchinson-Gilford Progeria Syndrome (HGPS) is an extremely rare condition (estimated incidence 1:4–8 million), caused by mutations in LMNA gene, which leads to premature aging. Median life expectancy is shortened to 13 years due to vascular complications such as stroke or myocardial infarction. We present below the history of a child born with a pathogenic LMNA variant c.433G>A (p.Glu145Lys). A male patient was referred due to failure to thrive and low growth velocit...

Introduction: Leri-Weill dyschondrosteosis (LWD) is caused by haploinsufficiency of the SHOX gene, located in the pseudoautosomal region (PAR 1) of the short arm of the X and Y chromosomes. The gene is expressed in highest levels in bone tissue and its product likely controls the chondrocyte apoptosis. Deletions and duplications are most frequent, point mutations are responsible for minority of the cases. The main clinical symptoms of LWD include disproportionate short stature...

Introduction: Autoimmune Polyglandular Syndrome Type 1 (APS-1) is a rare autosomal recessive hereditary disorder resulting from a mutation in the AIRE gene. APS-1 is characterized by three classic clinical features: hypoparathyroidism, Addison’s disease and chronic mucocutaneous candidiasis. Additionally to the classic triad, the phenotype of APS-1 includes several endocrine and non-endocrine autoimmune manifestations. Purpose:Topresent a rapid onset and progression of ch...

Background: Arteriovenous malformations (AVMs) are rare in kids, estimated to represent 3% of all AVMs. They tend to rupture more frequently than in adults and, usually, are brought to attention after rupture, as the most common non-traumatic intracerebral hemorrhage. AVMs could also present with recurrent seizures or headaches. Their optimal management remains controversial.Case report: We present the case of a 4.5 y old boy, presented in our department...

Introduction: Monocarboxylate transporter 8 (MCT8) is necessary for the transport of T3 to neurons. The case presented here is a male infant with neuromotor retardation initially treated for central hypothyroidism who showed no benefit from treatment and a final diagnosis of MCT8 deficiency was made.Case report: A male infant at 13 months of age was brought to the clinic because he was unable to sit without support. The perinatal history revealed that he...

Introduction: Congenital hypothyroidism is defined as thyroid hormone deficiency present at birth. It is the most common congenital endocrine disorder. Neonatal screening test for hypothyroidism can allow its early detection. The course of disease can be permanent or transient. Some permanent congenital hypothyroidism has been linked to defects in proteins involved in the synthesis of thyroid hormones. One of the critical steps in the synthesis of thyroid hormone is the genera...

Background: Type 1 diabetes (T1D), the most frequent type of diabetes in paediatrics, can be easily misdiagnosed presenting with hyperglycaemia due to monogenic diabetes. Objective and hypotheses: We report a 13-year-old boy with monogenic diabetes, initially diagnosed and treated as T1D.Method: The patient presented at 7.5 years of age with a febrile illness and mild hyperglycaemia. An oral glucose tolerance test (OGTT) then was normal,...