3,429 results match your criteria: "UCL Great Ormond Street Institute of Child Health.[Affiliation]"

Primary ciliary dyskinesia (PCD), a disorder of the motile cilia, is now recognised as an underdiagnosed cause of bronchiectasis. Accurate PCD diagnosis comprises clinical assessment, analysis of cilia and the identification of biallelic variants in one of 50 known PCD-related genes, including HYDIN. HYDIN-related PCD is underdiagnosed due to the presence of a pseudogene, HYDIN2, with 98% sequence homology to HYDIN.

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Expanding Access to Noninvasive Prenatal Diagnosis for Monogenic Conditions to Consanguineous Families.

Clin Chem

May 2024

North Thames Genomic Laboratory Hub, Great Ormond Street NHS Foundation Trust, London, United Kingdom.

Background: Cell-free fetal DNA exists within the maternal bloodstream during pregnancy and provides a means for noninvasive prenatal diagnosis (NIPD). Our accredited clinical service offers definitive NIPD for several autosomal recessive (AR) and X-linked conditions using relative haplotype dosage analysis (RHDO). RHDO involves next-generation sequencing (NGS) of thousands of common single nucleotide polymorphism (SNPs) surrounding the gene of interest in the parents and an affected or unaffected offspring to conduct haplotype phasing of the high- and low-risk alleles.

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Article Synopsis
  • Collagen VI-related dystrophies (COL6-RDs) include a range of conditions such as Ullrich congenital muscular dystrophy (UCMD), which features severe muscle weakness and respiratory issues, and Bethlem muscular dystrophy, which has milder and later-presenting symptoms.
  • Some patients with symptoms typical of COL6-RDs were previously undiagnosed until a deep intronic variant in COL6A1 was identified, leading to a severe form of UCMD in a cohort of 44 patients, except for one with a milder phenotype.
  • The study suggests that a new pseudoexon skipping therapy could effectively reduce the severity of UCMD symptoms by targeting the abnormal transcripts
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Genome-wide sequencing and genetic matchmaker services are propelling a new era of genotype-driven ascertainment of novel genetic conditions. The degree to which reported phenotype data in discovery-focused studies address informational priorities for clinicians and families is unclear. We identified reports published from 2017 to 2021 in 10 genetics journals of novel Mendelian disorders.

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Validation of the Clavien-Madadi Classification for Unexpected Events in Pediatric Surgery: A Collaborative ERNICA Project.

J Pediatr Surg

September 2024

Department of Pediatric Surgery, Hannover Medical School, Hannover, Germany; European Reference Network for Rare Inherited and Congenital Anomalies (ERNICA), European Union, Netherlands.

Background: The Clavien-Madadi classification is a novel instrument for the assessment and grading of unexpected events in pediatric surgery, based on the Clavien-Dindo classification. The system has been adjusted to better fit the pediatric population in a prospective single-center study. There is a need now to validate the Clavien-Madadi classification within an international expert network.

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Background And Purpose: Primary mitochondrial diseases (PMDs) are common inborn errors of energy metabolism, with an estimated prevalence of one in 4300. These disorders typically affect tissues with high energy requirements, including heart, muscle and brain. Epilepsy may be the presenting feature of PMD, can be difficult to treat and often represents a poor prognostic feature.

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Bulbar function in spinal muscular atrophy (SMA): State of art and new challenges. 21st July 2023, Rome, Italy.

Neuromuscul Disord

May 2024

Centro Clinico Nemo, U.O.C. Neuropsichiatria Infantile Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome; Pediatric Neurology Unit, Catholic University, Rome, Italy. Electronic address:

Progressive bulbar involvement is frequent in spinal muscular atrophy, with prevalence and severity of deficits associated with type. The report provides an overview of the presentations made at the workshop grouped into 4 sessions: the first section was dedicated to videofluoroscopy with a revision of the existing protocols and discussion on which one should be used in routine clinical practice and in research settings. The second session was dedicated to interprofessional routine assessments of bulbar function, with a review of the recent clinical tools specifically developed for SMA.

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Cefiderocol, a novel siderophore cephalosporin, represents a treatment option for infections with multidrug-resistant Gram-negative bacteria, of which rates are rising worldwide. Clinical data on its use in children is limited. In our pediatric case series, the largest reported to date, cefiderocol seems safe and well tolerated, with more favorable clinical outcomes when compared to the literature reviewing adult cases.

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Purpose: Periodontitis, a ubiquitous severe gum disease affecting the teeth and surrounding alveolar bone, can heighten systemic inflammation. We investigated the association between very severe periodontitis and early biomarkers of age-related macular degeneration (AMD), in individuals with no eye disease.

Design: Cross-sectional analysis of the prospective community-based cohort United Kingdom (UK) Biobank.

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Background: Migrants in the United Kingdom (UK) may be at higher risk of SARS-CoV-2 exposure; however, little is known about their risk of COVID-19-related hospitalisation during waves 1-3 of the pandemic.

Methods: We analysed secondary care data linked to Virus Watch study data for adults and estimated COVID-19-related hospitalisation incidence rates by migration status. To estimate the total effect of migration status on COVID-19 hospitalisation rates, we ran mixed-effect Poisson regression for wave 1 (01/03/2020-31/08/2020; wildtype), and mixed-effect negative binomial regressions for waves 2 (01/09/2020-31/05/2021; Alpha) and 3 (01/06/2020-31/11/2021; Delta).

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How can trial designs better serve the needs of children and young people with juvenile idiopathic arthritis?

Lancet Rheumatol

September 2024

Department of Paediatric Rheumatology, Bristol Royal Hospital for Children, Bristol, UK; Translational Health Sciences, University of Bristol, Bristol, UK. Electronic address:

In juvenile idiopathic arthritis we have seen remarkable progress in the number of available licensed biological and small molecule treatments in the past two decades, leading to improved outcomes for patients. Designing clinical trials for these therapeutics is fraught with ethical, legislative, and practical challenges. However, many aspects of current clinical trial design in juvenile idiopathic arthritis do not meet the needs of patients and clinicians.

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Article Synopsis
  • - Diffusion MRI is useful for understanding the structure of brain tissue, but it's tough to accurately interpret the data due to complex calculations needed for microstructural properties; machine learning might offer solutions.
  • - The study explored using novel spherical convolutional neural networks to better estimate these microstructural parameters by training the model on noisy simulated data and then applying it to real clinical imaging.
  • - Results showed the machine learning model outperformed traditional methods, providing higher accuracy and less variability, and it can be adapted to different models, including one that estimates neuron density in the brain.
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Anti-CD45 PBD-based antibody-drug conjugates are effective targeted conditioning agents for gene therapy and stem cell transplant.

Mol Ther

June 2024

UCL Great Ormond Street Institute of Child Health, Zayed Centre of Research, 20 Guilford Street, London WC1N 1DZ, UK; Great Ormond Street Hospital for Children NHS Foundation Trust, Great Ormond Street, London WC1N 1JH, UK. Electronic address:

Stem cell gene therapy and hematopoietic stem cell transplantation (SCT) require conditioning to ablate the recipient's hematopoietic stem cells (HSCs) and create a niche for gene-corrected/donor HSCs. Conventional conditioning agents are non-specific, leading to off-target toxicities and resulting in significant morbidity and mortality. We developed tissue-specific anti-human CD45 antibody-drug conjugates (ADCs), using rat IgG2b anti-human CD45 antibody clones YTH24.

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Background: The soft drinks industry levy (SDIL) in the United Kingdom has led to a significant reduction in household purchasing of sugar in drinks. In this study, we examined the potential medium- and long-term implications for health and health inequalities among children and adolescents in England.

Methods And Findings: We conducted a controlled interrupted time series analysis to measure the effects of the SDIL on the amount of sugar per household per week from soft drinks purchased, 19 months post implementation and by index of multiple deprivation (IMD) quintile in England.

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Spring-assisted surgery is a popular option for the treatment of non-syndromic craniosynostosis. The main drawback of this procedure is the need for a second surgery for spring removal, which could be avoided if a distractor material could be metabolised over time. Iron-Manganese alloys (FeMn) have a good trade-off between degradation rate and strength; however, their biocompatibility is still debated.

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Decline in Processing Speed Tells Only Half the Story: Developmental Delay in Children Living with Sickle Cell Disease.

Children (Basel)

February 2024

Manchester Centre for Health Psychology, Division of Psychology and Mental Health, University of Manchester, Manchester M13 9PL, UK.

Children with sickle cell disease (SCD) may experience cognitive difficulties, including slowed processing speed. Thus, we investigated if processing speed changes over time. From 1992-2001, 103 participants with SCD aged 3-16 years (n ≤ 8.

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Purpose: Anecdotal evidence suggests that children with epilepsy (CWE) are limited in the frequency of their daily physical activity (PA). However, there is limited research utilizing device-based measures of PA. We compared levels of PA and sedentary behavior in CWE (11-15 y) and age- and gender-matched healthy controls.

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Measurement of the Mapping between Intracranial EEG and fMRI Recordings in the Human Brain.

Bioengineering (Basel)

February 2024

Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, Queen Square, London WC1E 6BT, UK.

There are considerable gaps in our understanding of the relationship between human brain activity measured at different temporal and spatial scales. Here, electrocorticography (ECoG) measures were used to predict functional MRI changes in the sensorimotor cortex in two brain states: at rest and during motor performance. The specificity of this relationship to spatial co-localisation of the two signals was also investigated.

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APP gene dosage is strongly associated with Alzheimer's disease (AD) pathogenesis. Genomic duplication of the APP locus leads to autosomal dominant early-onset AD. Individuals with Down syndrome (trisomy of chromosome 21) harbour three copies of the APP gene and invariably develop progressive AD with highly characteristic neuropathological features.

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Background: Several studies indicate a correlation between consanguinity and genetic disorders, congenital malformations, harm to reproductive health, and increased child mortality.

Objective: To assess students' knowledge and attitudes about risks and prevention of consanguineous marriage.

Methods: Demographic details of the participants and data on knowledge and attitudes concerning the risks and prevention of consanguineous marriage were obtained using an online self-administered questionnaire.

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Neurointestinal diseases cause significant morbidity and effective treatments are lacking. This study aimes to test the feasibility of transplanting autologous enteric neural stem cells (ENSCs) to rescue the enteric nervous system (ENS) in a model of colonic aganglionosis. ENSCs are isolated from a segment of small intestine from Wnt1::Cre;R26iDTR mice in which focal colonic aganglionosis is simultaneously created by diphtheria toxin injection.

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