514 results match your criteria: "and Murdoch Childrens Research Institute[Affiliation]"

Article Synopsis
  • - Cerebellar ataxia, neuropathy and vestibular areflexia syndrome (CANVAS) is a rare neurodegenerative disease linked to genetic mutations, particularly biallelic AAGGG repeat expansions in the RFC1 gene.
  • - A study analyzed whole genome sequencing data from almost 10,000 individuals and discovered three new repeat variations related to CANVAS, alongside confirming the pathogenic nature of larger AAAGG expansions.
  • - The research highlights the need for careful genetic testing in CANVAS patients, especially for those carrying specific repeat configurations, to ensure accurate diagnosis and family counseling.
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Defining the 3'Epigenetic Boundary of the Promoter and Its Loss in Individuals with Fragile X Syndrome.

Int J Mol Sci

June 2023

Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, VIC 3052, Australia.

This study characterizes the DNA methylation patterns specific to fragile X syndrome (FXS) with a full mutation (FM > 200 CGGs), premutation (PM 55-199 CGGs), and X inactivation in blood and brain tissues at the 3' boundary of the promoter. Blood was analyzed from 95 controls and 462 individuals (32% males) with FM and PM alleles. Brain tissues (62% males) were analyzed from 12 controls and 4 with FXS.

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Autosomal dominant polycystic kidney disease (ADPKD) is the most common monogenic cause of kidney failure and is primarily associated with PKD1 or PKD2. Approximately 10% of patients remain undiagnosed after standard genetic testing. We aimed to utilise short and long-read genome sequencing and RNA studies to investigate undiagnosed families.

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Background: Third-generation nanopore sequencers offer selective sequencing or "Read Until" that allows genomic reads to be analyzed in real time and abandoned halfway if not belonging to a genomic region of "interest." This selective sequencing opens the door to important applications such as rapid and low-cost genetic tests. The latency in analyzing should be as low as possible for selective sequencing to be effective so that unnecessary reads can be rejected as early as possible.

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BRAT1 biallelic variants are associated with rigidity and multifocal seizure syndrome, lethal neonatal (RMFSL), and neurodevelopmental disorder associating cerebellar atrophy with or without seizures syndrome (NEDCAS). To date, forty individuals have been reported in the literature. We collected clinical and molecular data from 57 additional cases allowing us to study a large cohort of 97 individuals and draw phenotype-genotype correlations.

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Large-scale high-throughput sequencing data sets have been transformative for informing clinical variant interpretation and for use as reference panels for statistical and population genetic efforts. Although such resources are often treated as ground truth, we find that in widely used reference data sets such as the Genome Aggregation Database (gnomAD), some variants pass gold-standard filters, yet are systematically different in their genotype calls across genotype discovery approaches. The inclusion of such discordant sites in study designs involving multiple genotype discovery strategies could bias results and lead to false-positive hits in association studies owing to technological artifacts rather than a true relationship to the phenotype.

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Motivation: Nanopore sequencing is emerging as a key pillar in the genomic technology landscape but computational constraints limiting its scalability remain to be overcome. The translation of raw current signal data into DNA or RNA sequence reads, known as 'basecalling', is a major friction in any nanopore sequencing workflow. Here, we exploit the advantages of the recently developed signal data format 'SLOW5' to streamline and accelerate nanopore basecalling on high-performance computing (HPC) and cloud environments.

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Background: Antimicrobial resistance (AMR) remains one of the leading threats to global public health and this may increase following COVID-19 pandemic. This is particularly the case in Africa where regulations on antimicrobial usage are weak. This protocol outlines the steps to undertake a systematic review to synthesize evidence on drivers of AMR and evaluate existing approaches to strengthening antimicrobial stewardship (AMS) programs in Sub-Saharan Africa (SSA).

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Background: The SARS-CoV-2 global pandemic has fuelled the generation of vaccines at an unprecedented pace and scale. However, many challenges remain, including: the emergence of vaccine-resistant mutant viruses, vaccine stability during storage and transport, waning vaccine-induced immunity, and concerns about infrequent adverse events associated with existing vaccines.

Methods: We report on a protein subunit vaccine comprising the receptor-binding domain (RBD) of the ancestral SARS-CoV-2 spike protein, dimerised with an immunoglobulin IgG1 Fc domain.

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Transcriptome and Genome Analysis Uncovers a Structural Variant: A Case Report.

Neurol Genet

April 2023

Centre for Medical Research, University of Western Australia (C.F., G.R.), Harry Perkins Institute of Medical Research, Perth, Australia; Center for Mendelian Genomics (V.G., B.W., A.O.-L., H.L.R.), Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA; Department of Neurology (V.G.), Brigham and Women's Hospital; Division of Genetics and Genomics (V.G., A.O.-L.), Boston Children's Hospital, MA; Department of Anatomical Pathology (C.M., P.K.), Alfred Health; Department of Medicine (C.M., P.K.), Central Clinical School, Monash University, Melbourne; Murdoch Children's Research Institute (A.J.K.); Department of Neurology (A.J.K.), Royal Children's Hospital; Department of Paediatrics (A.J.K.), University of Melbourne, Victoria, Australia; Center for Genomic Medicine (A.O.-L., H.L.R.), Massachusetts General Hospital, Boston, MA; Genomics Pillar (I.S., S.R.C., I.W.D.), Garvan Institute of Medical Research, Sydney, Australia; Centre for Population Genomics (I.S., S.R.C., I.W.D.), Garvan Institute of Medical Research and Murdoch Children's Research Institute, Australia; School of Clinical Medicine (S.R.C., I.W.D.), Faculty of Medicine and Health, UNSW Sydney, Australia; and School of Biomedical Sciences (G.R.), University of Western Australia, Perth, Australia.

Objective: Duchenne muscular dystrophy (DMD) is caused by pathogenic variants in the dystrophin gene (). Hypermethylated CGG expansions within 5' UTR are associated with an intellectual development disorder. Here, we demonstrate the diagnostic utility of genomic short-read sequencing (SRS) and transcriptome sequencing to identify a novel structural variant (SV) and a CGG expansion in a patient with DMD for whom conventional diagnostic testing failed to yield a genetic diagnosis.

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Nanopore sequencing is being rapidly adopted in genomics. We recently developed SLOW5, a new file format with advantages for storage and analysis of raw signal data from nanopore experiments. Here we introduce slow5tools, an intuitive toolkit for handling nanopore data in SLOW5 format.

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Systematic Review and Meta-Analysis: Clinical Utility of Continuous Performance Tests for the Identification of Attention-Deficit/Hyperactivity Disorder.

J Am Acad Child Adolesc Psychiatry

February 2024

University of Southampton, Southampton, United Kingdom; Solent NHS Trust, Southampton, United Kingdom; New York University, New York, and the University of Nottingham, United Kingdom.

Objective: We aimed to quantify the clinical utility of continuous performance tests (CPTs) for the diagnosis of attention-deficit/hyperactivity disorder (ADHD) compared to a clinical diagnosis in children and adolescents.

Method: Four databases (MEDLINE, PsycINFO, EMBASE, and PubMed) were screened until January 2023. Risk of bias of included results was judged with the Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2).

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Indonesia is a high-burden tuberculosis (TB) country with a wide case detection gap, exacerbated by the COVID-19 pandemic. We aimed to review the epidemiology of TB in a high-endemic setting of Indonesia before and during the implementation of health system strengthening activities for TB, including during the first two years of the COVID-19 pandemic. We analysed TB program data from Mimika District, Papua, Indonesia from 2014 to 2021.

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Development of treatment-decision algorithms for children evaluated for pulmonary tuberculosis: an individual participant data meta-analysis.

Lancet Child Adolesc Health

May 2023

Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa; Department of Infectious Diseases, Imperial College London, London, UK.

Article Synopsis
  • - The study addresses the issue of undiagnosed pulmonary tuberculosis in children, aiming to improve diagnostic algorithms and prediction models to assist in treatment decisions at primary health-care centers.
  • - Researchers conducted a meta-analysis using data from WHO and various studies to evaluate the effectiveness of existing treatment-decision algorithms and develop new multivariable prediction models.
  • - The analysis included data from 4718 children under 10 years old across 12 countries, resulting in the creation of two scoring systems for tuberculosis classification that aim for high sensitivity in clinical settings.
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Caring for Adolescents and Young Adults With Tuberculosis or at Risk of Tuberculosis: Consensus Statement From an International Expert Panel.

J Adolesc Health

March 2023

Department of Pediatrics, The Ryan White Center for Pediatric Infectious Diseases and Global Health, Indiana University School of Medicine, Indianapolis, Indiana; Indiana University Center for Global Health, Indianapolis, Indiana. Electronic address:

Background:: Despite being a preventable and treatable disease, tuberculosis (TB) is a leading cause of death among young people globally. Each year, an estimated 1.8 million adolescents and young adults (AYAs; 10–24 years old) develop TB.

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Differential diagnosis of familial adult myoclonic epilepsy.

Epilepsia

June 2023

Austin and Royal Children's Hospital, Florey and Murdoch Children's Research Institute, University of Melbourne, Melbourne, Victoria, Australia.

Objective: Familial adult myoclonic epilepsy (FAME) is an under-recognized disorder characterized by cortical myoclonus, generalized tonic-clonic seizures, and additional clinical symptoms, which vary depending on the FAME subtype. FAME is caused by pentanucleotide repeat expansions of intronic TTTCA/TTTTA in different genes. FAME should be distinguished from a range of differential diagnoses.

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Rates of Status Epilepticus and Sudden Unexplained Death in Epilepsy in People With Genetic Developmental and Epileptic Encephalopathies.

Neurology

April 2023

From the Epilepsy Research Centre (A.M.D., A.L.S., S.R.-H., I.E.S.), Department of Medicine, The University of Melbourne, Austin Health; Melbourne Medical School (L.C.), Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville; The Florey Institute of Neurosciences and Mental Health (L.C., I.E.S.), Melbourne; and Department of Paediatrics (I.E.S.), The University of Melbourne, Royal Children's Hospital, and Murdoch Children's Research Institute, Victoria, Australia.

Background And Objectives: The genetic developmental and epileptic encephalopathies (DEEs) comprise a large group of severe epilepsy syndromes, with a wide phenotypic spectrum. Currently, the rates of convulsive status epilepticus (CSE), nonconvulsive status epilepticus (NCSE), and sudden unexplained death in epilepsy (SUDEP) in these diseases are not well understood. We aimed to describe the proportions of patients with frequently observed genetic DEEs who developed CSE, NCSE, mortality, and SUDEP.

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Article Synopsis
  • * A review was conducted on HPV-related data systems from seven high-income countries (Australia, Canada, France, Italy, Scotland, Sweden, and the US), highlighting various strategies in vaccination and screening programs, as well as differences in data collection methods.
  • * The review reveals challenges in comprehensively monitoring global elimination efforts and offers insights into the strengths and weaknesses of current data systems, which could enhance existing and future cervical cancer prevention initiatives.
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Tuberculosis Infection in Children and Adolescents.

Pathogens

December 2022

TransVIHMI, Institut de Recherche pour le Développement (IRD), Institut National de la Santé et de la Recherche Médicale (INSERM), University of Montpellier, 34090 Montpellier, France.

The burden of tuberculosis (TB) in children and adolescents remains very significant. Several million children and adolescents are infected with TB each year worldwide following exposure to an infectious TB case and the risk of progression from TB infection to tuberculosis disease is higher in this group compared to adults. This review describes the risk factors for TB infection in children and adolescents.

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Objective: To evaluate whether fenfluramine (FFA) is associated with improvement in everyday executive function (EF)-self-regulation-in preschool-aged children with Dravet syndrome (DS).

Methods: Children with DS received placebo or FFA in one of two phase III studies (first study: placebo, FFA 0.2 mg/kg/day, or FFA 0.

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JCO In the primary analysis of the global phase II ELIANA trial (ClinicalTrials.gov identifier: NCT02435849), tisagenlecleucel provided an overall remission rate of 81% in pediatric and young adult patients with relapsed or refractory B-cell acute lymphoblastic leukemia (R/R B-ALL), with 59% of responders remaining relapse-free at 12 months. Here, we report an update on efficacy, safety, and patient-reported quality of life in 79 pediatric and young adult patients with R/R B-ALL following a median follow-up of 38.

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