34,496 results match your criteria: "Guy's & St. Thomas' Hospitals & King's College London[Affiliation]"

Impact of cardiovascular magnetic resonance in single ventricle physiology: a narrative review.

Cardiovasc Diagn Ther

December 2024

Department of Pediatric Cardiology, Royal Brompton Hospital, Guy's and St Thomas' NHS Foundation Trust, London, UK.

Background And Objective: Cardiovascular magnetic resonance (CMR) is a routine cross-sectional imaging modality in adults with congenital heart disease. Developing CMR techniques and the knowledge that CMR is well suited to assess long-term complications and to provide prognostic information for single ventricle (SV) patients makes CMR the ideal assessment tool for this patient cohort. Nevertheless, many of the techniques have not yet been incorporated into day-to-day practice.

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Background: Myelofibrosis (MF) is a clonal haematopoietic disease, with median overall survival for patients with primary MF only 6.5 years. The most frequent gene mutation found in patients is JAK2, causing constitutive activation of the kinase and activation of downstream signalling.

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Human tumors are diverse in their natural history and response to treatment, which in part results from genetic and transcriptomic heterogeneity. In clinical practice, single-site needle biopsies are used to sample this diversity, but cancer biomarkers may be confounded by spatiogenomic heterogeneity within individual tumors. Here we investigate clonally expressed genes as a solution to the sampling bias problem by analyzing multiregion whole-exome and RNA sequencing data for 450 tumor regions from 184 patients with lung adenocarcinoma in the TRACERx study.

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Background: Autologous breast reconstruction patients require thorough assessment, with the profunda femoris artery perforator (PAP) flap having become an important autologous reconstruction option alongside the deep inferior epigastric perforator (DIEP) flap. Breast reconstruction impacts patients psychologically, physically and mentally. The BREAST-Q aids in the assessment of patient-reported outcome measures (PROMs).

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Neutrophil Extracellular Traps (NETs) as a Potential Target for Anti-Aging: Role of Therapeutic Apheresis.

Horm Metab Res

January 2025

Department of Intensive Care Medicine, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom of Great Britain and Northern Ireland.

Neutrophil extracellular traps (NETs) are large structures composed of chromatin, histones and granule-derived proteins released extracellularly by neutrophils. They are generally considered to be a part of the antimicrobial defense strategy, preventing the dissemination of pathogens. However, overproduction of NETs or their ineffective clearance can drive various pathologies, many of which are associated with advanced age and involve uncontrolled inflammation, oxidative, cardiovascular and neurodegenerative stress as underlying mechanisms.

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Trends in Ethnic Disparities in Stroke Care and Long-Term Outcomes.

JAMA Netw Open

January 2025

School of Life Course and Population Sciences, King's College London, London, United Kingdom.

Importance: Reducing the burden of stroke is a public health priority. While higher stroke incidence among ethnic minority populations (defined in the context of this study as individuals who are not White) is well established, reports on ethnic inequalities in care or outcomes are conflicting and often limited to hospital-admitted patients and short-term outcomes.

Objective: To investigate ethnic differences in stroke care and outcomes up to 5 years after stroke and describe temporal trends and contributory factors.

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Survival benefit of cancer-directed surgery and the role of adjuvant therapy in malignant major salivary gland cancers: a propensity score matched retrospective analysis.

Oral Maxillofac Surg

January 2025

Centre for Oral, Clinical & Translational Sciences, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, Guy's Hospital, Tower Wing, London, UK.

Background: The primary objective of this study was to assess the benefit of cancer-directed surgery (CDS) on both overall survival (OS) and cancer-specific survival (CSS) of patients with malignant major salivary gland cancers (MMSGCs). The secondary objective was to explore the benefits of adjuvant therapy on the survival outcomes of these patients.

Methods: Patients diagnosed with MMSGC were extracted from the SEER database and subsequently categorized into two cohorts: CDS and non-CDS.

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Background: This study compared the therapeutic equivalence of CT-P39 (an omalizumab biosimilar) and EU-approved reference omalizumab (ref-OMA) in patients with chronic spontaneous urticaria.

Methods: This double-blind, randomized, active-controlled Phase 3 study (NCT04426890) included two 12-week treatment periods (TPs). In TP1, patients received CT-P39 300 mg, ref-OMA 300 mg, CT-P39 150 mg, or ref-OMA 150 mg.

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Using joint genomic-transcriptomic analysis of 243 samples, we reveal recurrent patterns of nongenetic evolution in ccRCC not exclusively governed by genetic factors, including T-cell depletion, tumor T-cell receptor coevolution, potential cGAS-STING repression, and increased cell proliferation. These patterns can aid clinical management and guide novel treatment approaches.

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Introduction And Objectives: High flow nasal cannula (HFNC) therapy is an increasingly popular mode of non-invasive respiratory support for the treatment of patients with acute hypoxemic respiratory failure (AHRF). Previous experimental studies in healthy subjects have established that HFNC generates flow-dependent positive airway pressures, but no data is available on the levels of mean airway pressure (mP) or positive end-expiratory pressure (PEEP) generated by HFNC therapy in AHRF patients. We aimed to estimate the airway pressures generated by HFNC at different flow rates in patients with AHRF, whose functional lung volume may be significantly reduced compared to healthy subjects due to alveolar consolidation and/or collapse.

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The TRIPOD-LLM reporting guideline for studies using large language models.

Nat Med

January 2025

Artificial Intelligence in Medicine (AIM) Program, Mass General Brigham, Harvard Medical School, Boston, MA, USA.

Large language models (LLMs) are rapidly being adopted in healthcare, necessitating standardized reporting guidelines. We present transparent reporting of a multivariable model for individual prognosis or diagnosis (TRIPOD)-LLM, an extension of the TRIPOD + artificial intelligence statement, addressing the unique challenges of LLMs in biomedical applications. TRIPOD-LLM provides a comprehensive checklist of 19 main items and 50 subitems, covering key aspects from title to discussion.

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Inequalities in cancer two-week-wait referrals: a cross-sectional study in English general practice.

BJGP Open

January 2025

School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom.

Background: Practices with higher two-week-wait (2WW) referral-rates demonstrate higher survival for several cancers. Yet, there is little up-to-date evidence exploring factors influencing 2WW-referral-rates and whether health inequalities exist, particularly after COVID-19.

Aim: To establish which patient-factors (eg, age, sex, ethnicity, deprivation) and practice-factors (eg, remote consultations, frequency of seeing a preferred-GP) independently predict 2WW-referral-rates.

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Realizing the Untapped Potential of Stress Perfusion CMR in Medicare's Aging Population.

JACC Cardiovasc Imaging

January 2025

School of Biomedical Engineering and Imaging Sciences, King's College London, Guy's and St Thomas' Hospital, London, United Kingdom; Cardio-Oncology Centre of Excellence, Royal Brompton Hospital, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.

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Objective: Etrasimod is an oral, once-daily, selective sphingosine 1-phosphate (S1P) receptor modulator for the treatment of moderately to severely active ulcerative colitis (UC). S1P receptor expression on cardiac cells is involved in cardiac conduction. We report cardiovascular treatment-emergent adverse events (TEAEs) associated with S1P receptor modulators and other cardiovascular events in the etrasimod UC clinical programme.

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Acute maternal hyperoxygenation to predict hypoxia and need for emergency intervention in fetuses with transposition of the great arteries: a pilot study.

J Am Soc Echocardiogr

January 2025

Department of Congenital Heart Disease, Evelina London Children's Hospital, Guy's & St Thomas' NHS Trust, Westminster Bridge Road, London SE1 7EH, UK; School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK.

Background: Newborns with transposition of the great arteries (TGA) are at risk of severe hypoxia from inadequate atrial mixing, closure of the arterial duct and/or pulmonary hypertension (PPHN). Acute maternal hyperoxygenation (AMH) might assist in identifying at-risk fetuses. We report pulmonary vasoreactivity to AMH in TGA fetuses and its relationship to early postnatal hypoxia and requirement for emergency balloon atrial septostomy (e-BAS).

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Objectives: This study aims to explore patients' and clinicians' understanding and experiences of refractory disease (RD) and persistent physical and emotional symptoms (PPES) in patients with inflammatory arthritis (IA), namely rheumatoid arthritis or polyarticular juvenile idiopathic arthritis from their perspectives through interviews and/or focus groups.

Design: A qualitative study was conducted, following a pragmatic epistemology approach with framework analysis employed.

Methods: Semi-structured interviews or focus groups with IA patients (n = 25) and multi-disciplinary rheumatology HCPs (n = 32) were conducted at one time point to obtain participants respective understanding and experiences of managing RD/PPES, and its impact on the patient-professional relationship.

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Data from the British Society of Rheumatology demonstrate a lack of exposure to rheumatology for medical students, potentially impacting career choice. We conducted a Systematic Literature Review (SLR) on quantity, type and quality of rheumatology teaching for undergraduate medical students. This SLR was registered on PROSPERO (CRD42023472169).

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Maximum Tumor Diameter is Associated with Relapse Risk in Limited-Stage Hodgkin Lymphoma: An International Study.

Blood Adv

January 2025

Division of Cancer Sciences, University of Manchester, Manchester Academic Health Science Centre, and Department of Medical Oncology, The Christie Hospital, Manchester, United Kingdom.

Tumour bulk is an established prognostic factor in Hodgkin lymphoma (HL) but most patients with limited-stage (LS) HL do not have 'bulk' by standard binary definitions. In the RAPID trial, maximum tumor diameter (MTD) was associated with risk of relapse for LS-HL patients achieving PET-negativity after ABVD chemotherapy. We aimed to externally validate these findings in the H10 trial.

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While the key aspects of genetic evolution and their clinical implications in clear cell renal-cell carcinoma (ccRCC) are well-documented, how genetic features co-evolve with the phenotype and tumor microenvironment (TME) remains elusive. Here, through joint genomic-transcriptomic analysis of 243 samples from 79 patients recruited to the TRACERx Renal study, we identify pervasive non-genetic intratumor heterogeneity, with over 40% not attributable to genetic alterations. By integrating tumor transcriptomes and phylogenetic structures, we observe convergent evolution to specific phenotypic traits, including cell proliferation, metabolic reprogramming and overexpression of putative cGAS-STING repressors amid high aneuploidy.

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Automated craniofacial biometry with 3D T2w fetal MRI.

PLOS Digit Health

December 2024

Department of Early Life Imaging, School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital, London, United Kingdom.

Objectives: Evaluating craniofacial phenotype-genotype correlations prenatally is increasingly important; however, it is subjective and challenging with 3D ultrasound. We developed an automated label propagation pipeline using 3D motion- corrected, slice-to-volume reconstructed (SVR) fetal MRI for craniofacial measurements.

Methods: A literature review and expert consensus identified 31 craniofacial biometrics for fetal MRI.

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