ESPE Abstracts

Introduction: Marfan syndrome is an autosomal dominant disorder due to a mutation of the FBN1 gene of chromosome 15 that produces fibrillin, a connective tissue protein. Tall stature can be of a major concern especially in a girl patient. Here we discuss a case of a 13-year-old girl with MFS with tall stature and multiple associated comorbidities that pose challenges in her management for the whole family.Case Report: A ...

Background and Aims: A congenital adrenal hyperplasia (CAH) is a group of autosomal recessive disorders in which enzymes in the cortisol biosynthesis pathways are interrupted by gene mutations. More than 90% of CAH, is caused by 21-hydroxylase (21OHD) deficiency. The 17α-hydroxylase (17OHD) deficiency one of the less common forms of CAH, can result in significant morbidity and mortality if left untreated, thus making early diagnosis essential. In Saudi A...

Background: Sitosterolemia, a rare autosomal recessive defect in lipid metabolism, is caused by mutations in the transporter genes ABCG5 and ABCG8 coding receptors on the luminal surface of enterocytes. Thus, hyperabsorption of non-digestible plant sterol in tissue and blood resulting in cardiovascular (CVD) sequalae. Here we report a case of Sitosterolaemia incidentally diagnosed on whole exome sequencing (WES) for bony lesions in a young Saudi girl with asym...

Background: Dual-specificity tyrosine phosphorylation-regulated kinase 1B (DYRK1B) is a nutrient-sensing protein that suppresses the RAS–RAF–MEK pathway and is known to have a role in glucose uptake and glycolysis. The expression of DYRK1B increases during adipogenic differentiation suggesting an important role in adipogenesis. Mutations in DYRK1B have been described in three Iranian families and five Caucasian patients w...

Background: Obesity is highly prevalent worldwide, particularly in the MENA region. Whilst simple obesity has a variable genetic and environmental basis, syndromic and non-syndromic monogenic obesity has a strong genetic component. Melanocortin 4 receptor (MC4R) mutations are the commonest cause of monogenic obesity. MC4R also regulates neuropathic pain pathways via JNK signaling after nerve injury.Methods: Five children...

Background: Advances in the treatment of childhood and adolescence cancer treatment have led to significant increase in survival rate. Current 5-survival rate of childhood cancer is nearly 80%. Hematopoietic stem cell transplant (HSCT) is treatment of choice in many clinical conditions including malignant and non-malignant hematological diseases, solid tumors and immunodeficiency diseases. Children receiving HSCT are prepared with different pre-transplant cond...

Introduction: Congenital Adrenal Hyperplasia (CAH) is a chronic disease that requires life-long hormonal replacement therapy. Growth of patients with CAH can be affected by this therapy or the hyperandrogenic effect of the disease. In this study, we aimed to assess the potential effect of CAH and its therapy on final height in Saudi affected patients.Methodology: This is a retrospective cohort study from two tertiary end...

Context: Monogenic obesity (MO) is a rare form of obesity due to pathogenic variants in genes implicated in the leptin-melanocortin signaling pathway and accounts for around 5% of severe early-onset obesity. Mutations in the MC4R and Leptin genes are the commonest causes of MO. Determining the genetic causes has important clinical benefits as novel therapeutic interventions were developed for some forms of MO.Objective:<...

Background: Paragnagliomas and pheochromocytomas are rare neuroendocrine tumors that originate from the paraganglionic cells of the autonomic nervous systems. These tumors may be extra or intra-adrenal in site. The use of antihypertensive medications is usually challenging in these patients. Long acting alpha and beta blockade can be quite useful preoperatively but challenging postoperatively. We present a case of familial paraganglioma that was successfully t...

Background: The leptin-melanocortin pathway is pivotal in appetite and energy homeostasis. Pathogenic variants in genes involved in this pathway lead to severe early-onset monogenic obesity (MO). The MC4R gene plays a central role in the leptin-melanocortin, and variants predominantly heterozygous in this gene, are the most common cause of MO. We identified a novel heterozygous variant c.802T>C p.Tyr268His in the MC4R gene in two unrelated patients with mor...