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Objectives: To report the mutational landscape of a clinically diagnosed cohort of paediatric patients with cholestasis liver diseases., Methods: The retrospective study was conducted at the University of Child Health Sciences, The Children Hospital, Lahore, Pakistan, from December 10, 2021, to March 31, 2022, and comprised data collected from the Paediatric Gastroenterology and Hepatology unit on demographics, clinical and laboratory findings related to children of either gender aged <12 years and diagnosed with cholestatic liver disease from July 2018 to June 2021. The diagnosis was based on clinical and biochemical findings, with no evidence of biliary atresia and metabolic liver disease. Molecular characterisation was done through whole exome sequencing., Results: Of the 171 children evaluated, 92(53.8%) were diagnosed with genetic cholestatic disorders. There were 52(56%) boys and 41(44%) girls. The median age at presentation was 19.5 months (interquartile range: 51 months). Consanguinity was found in 82(88.1%) cases, and positive family history with one or more affected siblings was noted in 60(64.5%). Exome sequencing identified pathogenic mutations in 13 genes underlying the hereditary cholestasis; ATP8B1, ABCB11, ABCB4, TJP2, NR1H4, DCDC2, ACOX2, AKR1D1, HSD3B7, ABCC2, USP53, SLC10A1, and SLC51A. Of the 70 variants identified, 50(71.4%) were novel variants. The ABCB11-related hereditary cholestasis was the most frequent 27(29%), followed by ABCB4 (26(27.9%). Homozygosity was frequently seen in all except 8(8.6%) children, who had compound heterozygous pathogenic variants. There was no evidence of phenotypic expression in the carrier parents despite the severe nature of the respective mutations identified in the patients., Conclusions: Genetic heterogeneity of paediatric intrahepatic cholestasis showed recurrent and novel mutations.

Objective: To explore the spectrum of presentation, underlying monogenetic defects and outcome in very early onset inflammatory bowel disease (VEO-IBD)., Method: The prospective, observational study was conducted at the Children's Hospital, Lahore, Pakistan, from January 2017 to December 2018, and comprised children developing features of inflammatory bowel disease aged <6 years. Data included demography, clinical presentation, diagnostic tools and outcome. Data was analysed using SPSS 21., Results: Of the 60 children with relevant symptoms, 26(43.3%) were diagnosed as having very early onset inflammatory bowel disease. Of them, 13(50%) had underlying monogenic defect, and 16(61.5%) had ulcerative colitis. There were 22(84.6%) males with median age of 1.5(11) months in monogenic inflammatory bowel disease versus 24(43) months for non-monogenic inflammatory bowel disease (p<0.05). In the monogenic group, isolated rectal bleeding was the major presentation 13(100%) versus non-monogenic who presented mainly with failure to thrive 13(100%). Upper and lower endoscopies with histopathology had good diagnostic yield and inflammatory infiltrates on the biopsied tissues were the major findings. Mutations detected among the subjects were XIAP, PRKDC, PIK3CD, RAG-1, LRBA, DOCK8, TTC7, MEFV and EPCAM. Mortality was significantly higher in the monogenic group 7(54%) than in the non-monogenic group 2(15%) (p<0.05)., Conclusions: Very early onset inflammatory bowel disease should be suspected when conventional management fails to rectify common disease mimickers. Testing for underlying immunological defect and genetic mutation would be helpful for managing these rare disorders.

Hepatic artery is the fourth most common site of the intraabdominal aneurysm, after infra renal aorta, iliac artery and splenic artery aneurysms. Rupture of the aneurysm may lead to the upper gastrointestinal haemorrhage. Here we report a 5 years old boy, who presented with fever, abdominal distension and unexplained upper GI bleed. Upper GI endoscopy revealed a normal esophagus and stomach with clear evidence of haemobilia with blood oozing from the ampulla. Fluoro- guided angiography followed by embolization of hepatic artery branches with 5 metallic coils was performed in this case by an interventional radiologist.

Objective: To describe the clinical presentations, laboratory features and management of congenital hepatic fibrosis patients at a tertiary care hospital., Methods: The case series was conducted at The Children Hospital and Institute of Child Health, Lahore, Pakistan, from July 2013 to June 2015, and comprised patients of congenital hepatic fibrosis diagnosed on the basis of liver biopsy. SPSS 20 was used for statistical analysis., Results: The mean age of 25 patients in the study was 8.5±2.74 years, and the male-to-female ratio was 3:1. Parents of 21(84%) patients had consanguineous marriage, and 14(56%) patients had family history of hematemesis and melena. Besides, 15(60%) patients presented with hematemesis, 12(48%) had abdominal distension, 5(20%) were picked up on screening of siblings and 5(20%) were referred from general practitioners on feeling of hepatosplenomegaly during routine examination. All had hepatomegaly with a mean size of 7.2 ±2.3cm palpable in midline. Splenomegaly was present in 24(96%). Overall, 15(60%) patients had oesophageal varices. Endoscopic band ligations were done in oesophageal variceal patients who were successfully managed, while 5(20%) patients required portosystemic shunt surgeries., Conclusions: Congenital hepatic fibrosis was not uncommon in our population having high rate of consanguinity and most of them were familial cases.