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We are reporting a rare case series of 2 siblings and their mother with diabetes having a CFAP126 gene mutation. Two female siblings, presented with incidental hyperglycemia at the ages of 16 and 13. They had a strong family history of diabetes on the maternal side. The systemic examination was unremarkable. Sibling 1 had HbA1C of 12.3 % with insulin and C-peptide levels of 6.6 IU/L and 1.8 ng/mL, respectively. Sibling 2 had an HbA1C of 12.6 %, an insulin level of 7.3 IU/L, and a C-peptide level of 2.02 ng/mL. Anti-GAD-65 and IA2 antibodies were negative. Mother also shared similar clinical processes and exhibited comparable biochemical changes related to glucose metabolism with elevated HbA1C levels and negative autoimmune markers (anti-GAD65 and IA2 antibodies). Whole exome sequencing (WES) turned out to be negative for MODY variants but revealed a rare heterozygous mutation in the CFAP126 gene (c.310A>T p. (Lys104*) in this family including both siblings and mother. The pathogenicity prediction tool MutationTaster® classified the mutation as disease causing. Oral glibenclamide remarkably reduced insulin requirements and improved HbA1C levels. This rare genetic mutation is likely associated with diabetes and possibly a novel marker for a yet to be identified type of diabetes, that is responsive to oral sulfonylureas. The influence of this gene on insulin secretion needs to be confirmed through future research. [ABSTRACT FROM AUTHOR]

Vitamin D dependent rickets type 1A (VDDR1A) is a rare autosomal recessive condition due to inactivating mutation of CYP27B1. It mimics clinically, biochemically and rediologically to nutritional and hypophosphatemic rickets. In developing countries like Pakistan, VDDR1A is often misdiagnosed as nutritional rickets or hypophosphatemic rickets due lack of free access to 1,25 (OH) 2 D level and genetic testing. This study was aimed to determine the clinical spectrum and diagnostic challenges of VDDR1A due to CYP27B1 mutation in developing countries. Retrospective review of all cases of VDDR1A due to CYP27B1 mutation over a period of two years presenting in the Pediatric Endocrine clinic of Hameed Latif Hospital, Lahore, Pakistan. Six cases of VDDR1A (4 males) were identified. Mean age of clinical manifestation was 14 (9–24) months. Mean age of presentation to endocrine department was 5.5 (1.5–11.8) years. Growth failure and bony deformities were the most common presentation (n=6), followed by repeated diarrheas and abdominal distension (n=3) and recurrent fractures (n=1). All cases shared same biochemical profile of low/normal calcium, hypophosphatemia, raised alkaline phosphatase, raised PTH, normal/high 25(OH)D and tubular reabsorption of phosphate (TRP) <85%. Patients treated with calcitriol showed rapid healing as compared to those treated with 1-alfacalcidol. We should have a high index of suspicion of VDDR1A in rickets not responding to cholecalciferol therapy. [ABSTRACT FROM AUTHOR]

Objective: To describe the aetiology and clinical spectrum of acute liver failure of infancy at a tertiary care hospital Study Design: Cross-sectional study. Place and Duration of Study: Department of Paediatric Gastroenterology, Hepatology & Nutrition, Children Hospital and Institute of Child Health, Lahore, from Nov 2020 to May 2021. Methodology: Infants under 12 months of age were enrolled having liver-based coagulopathy (not corrected after two doses of parenteral vitamin K, 10 mg) with INR > 2, whether encephalopathy was present or not. Encephalo-pathy is difficult to identify in infants, so it was not essential for the diagnosis of ALFI in our study. Infants diagnosed with chronic liver disease at presentation or those without final etiological diagnosis were excluded. Results: A total of 31 infants were enrolled fulfilling the criteria of acute liver failure of infancy and were studied about aetiology and clinical presentation. The mean age of presentation was 4.64±3.16 months, and males predominated in the study group (64.5%). Common clinical features were in descending order ascites in 29 (93.5%), jaundice in 28 (90.3%), pallor in 24 (77.4%) and peripheral oedema in 21 (67.7%). Metabolic liver diseases were the common cause of ALFI, constituting around (18, 58%) followed by sepsis (9, 29%). Galactosemia (11, 35.5%) stands out among the metabolic causes. Conclusion: Metabolic disorders followed by sepsis are the most common cause of ALFI. [ABSTRACT FROM AUTHOR]

Objective: To evaluate the role of tissue transglutaminase IgA antibody (TTG IgA Ab) in diagnosis of pediatric celiac disease (CD) taking small bowel biopsy as gold standard. Study Design: Cross-sectional study. Place and Duration of Study: Department of Pediatric Gastroenterology, the Children's Hospital & the Institute of Child Health, Lahore, from Jan 2018 to Jun 2018. Methodology: Sixty patients aged 2-18 years, with suspicion of CD, having at least 3 presenting features from chronic diarrhea, malnutrition, short stature, anemia, abdominal distention and digital clubbing, were included. TTG IgA Ab titre, small bowel biopsy (SBB) and histopathology were done in all cases. Results: Of the 60 participants, 22 (36.7%) were male and 38 (63.3%) were female with mean age of 6.56 ± 3.78 years. The calculated sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy are 94.1%, 96.1%, 96.9%, 92.5% & 95% respectively. TTG IgA Ab value more than 90 U/ml corresponds to Marsh 3b or higher grade lesion with 94.73% positive predictive value. Conclusion: There is a strong correlation between TTG titres and degree of duodenal damage in patients suspected of CD. Biopsy can be avoided when TTG level is more than 9 times the manufacturer's cut off value. [ABSTRACT FROM AUTHOR]

Background: Hepatopulmonary syndrome is severe pulmonary vascular complication of chronic liver disease requiring liver transplant. This study was conducted to evaluate different indicators of HPS in patients with portal hypertension, its varied aetiologies, clinical features & outcome. Methods: Hospital based descriptive study, 203 patients were enrolled, divided in to 2 groups positive and negative on the basis of presence or absence of HPS as per diagnostic criteria. Results: It included 203 patients with portal Hypertension of varied aetiologies. Age range was 8.76±3.69 years. 54.7% were male & 45.3% female. Commonest diagnosis for portal hypertension was portal vein thrombosis in 48 (23.6%) while Least common was biliary atresia seen in 6 (3%) of cases. Fifteen patients were included in Positive group and 188 in negative group. Clinical & laboratory parameters in order of frequency in positive group were hypoxia & cyanosis in 100% & 93.3% followed by dyspnoea & grade 4 clubbing in 86.6% patients (p<0.001). Child scoring was also done in all patients. In negative group 7 (3.7%) had dyspnoea, I (0.53%) had grade 4 clubbing while none showed evidence of hypoxia or cyanosis (p<0.001). Three patients underwent successful liver transplant. One patient of biliary atresia & another of CHF expired. Conclusion: In All children with CLD and/or PHT with unexplained dyspnoea, cyanosis and grade 4 clubbing, HPS should be suspected. It is an indication for early LT even in absence of liver failure. [ABSTRACT FROM AUTHOR]

Background: Inborn errors of metabolism are inherited disorders that present in early childhood and are usually caused by monogenic recessive mutations in specific enzymes that metabolize dietary components. Distinct mutations are present in specific populations. Objective: To determine which genomic variants are present in Pakistani cohorts with hepatorenal tyrosinemia type 1 (HT1) and fructose 1,6-bisphosphatase deficiency (FBPD). Materials and Methods: We sequenced the fumaryl acetoacetate hydrolase encoding gene (FAH) including flanking regions in four unrelated HT1 cohorts and the fructose 1,6-bisphosphatase gene (FBP1) in eight FBPD cohorts. Results: We mapped two recessive mutations in FAH gene for HT1; c.1062 + 5G > A(IVS12 + 5G > A) in three families and c.974C > T(pT325M) in one. We identified three mutations in FBP1 gene; c.841G > A(p.E281K) in five FBPD families, c.472C > T(p.R158W) in two families and c.778G > A(p.G260R) in one. Conclusion: Knowledge of common variants for HTI and FBDP in our study population can be used in the future to build a diagnostic algorithm. [ABSTRACT FROM AUTHOR]

Background: Objectives of the study were to determine the clinical spectrum of presentation and various modalities helpful in the diagnosis of liver glycogenosis short of genetic analysis. Methods: All patients under 18 years of age presenting to Paediatric Gastroenterology unit of Children's Hospital, Lahore with suspicion of hepatic glycogen storage disease (GSD) were enrolled over a period of 18 months. Demographic profile and various factors under observation were recorded. Collected data was analysed using SPSS version 22. Results: Among 89 enrolled patients F:M ratio was (1.28:1). The most common GSD was type I (71, 79.7%) followed by III (13, 14.6%), II (3, 3.3%), IV (1, 1.1%) and IX (1, 1.1%). The Abdominal distension was the most common presentation in 89.5% followed by hepatomegaly in 86.5%, diarrhoea in 41.6%, doll’s like appearance in 31.5% and vomiting, acidotic breathing with convulsions in about 20% of children in GSD I. Hepatomegaly (100%), failure to thrive (85%), developmental delay (69%) and splenomegaly (92.3%) were leading presentation in GSD III. Elevated triglycerides (77.5%) followed by transaminesemia (56%), hypercholesterolemia (63%), hyperuricemia (32%) and hypoglycaemia (14%) were significant biochemical findings in GSD I. Consistently raised liver enzymes (92%) and creatinine phosphokinase (100%) in addition to hypertriglyceridemia (69%) were seen in GSD III. The presence of enlarged hepatocytes with clearing of cells favour GSD1 showed in 79% of children while fibrosis and steatosis usually seen in GSD-III (14.6%). Conclusion: Hepatic glycogen storage diseases are serious health issues and should be excluded in any patient who present with hepatomegaly, short stature and hyperlipidaemia to decrease the disease mortality and morbidity. [ABSTRACT FROM AUTHOR]