Publications by authors named "Namhee Kwon"

Background And Aims: Real-world evidence characterising the burden of eosinophilic granulomatosis with polyangiitis (EGPA) in Europe is limited. The aim of this study was to characterise patients in a large European EGPA cohort.

Methods: This retrospective, non-interventional, longitudinal study (GSK ID: 214661) recruited cross-specialty physicians from France, Germany, Italy, Spain and the UK to conduct medical chart reviews for patients with a physician-confirmed diagnosis of EGPA.

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Background: The Mepolizumab in Relapsing or Refractory EGPA (MIRRA) trial (GSK ID: 115921/NCT02020889) demonstrated that mepolizumab increased remission time and reduced oral corticosteroid (OCS) use compared with placebo in patients with relapsing or refractory eosinophilic granulomatosis with polyangiitis (EGPA). The present analysis investigated the impact of baseline characteristics on clinical outcomes and characterised the OCS-sparing effect of mepolizumab.

Methods: In a phase 3, randomised controlled trial for patients with EGPA (MIRRA), patients received standard of care plus mepolizumab 300 mg or placebo every 4 weeks for 52 weeks.

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Elevated eosinophil counts are implicated in multiple diseases, from relatively prevalent organ-specific disorders such as severe eosinophilic asthma, to rare multisystem disorders such as hypereosinophilic syndrome (HES) and eosinophilic granulomatosis with polyangiitis (EGPA). Patients with these multisystem diseases, often associated with markedly elevated eosinophil counts, have a substantial risk of morbidity and mortality due to delayed diagnosis or inadequate treatment. A thorough workup of symptomatic patients presenting with elevated eosinophil counts is essential, although in some cases the differential diagnosis may remain difficult because of overlapping presentations between HES and EGPA.

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Objective: To evaluate mepolizumab's efficacy in eosinophilic granulomatosis with polyangiitis (EGPA) with and without a vasculitic phenotype.

Methods: The MIRRA study (NCT02020889/GSK ID: 115921) included adults with relapsing/refractory EGPA and 4 or more weeks of stable oral glucocorticoids (OG). Patients received mepolizumab (300 mg subcutaneously every 4 weeks) or placebo, plus standard of care for 52 weeks.

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Introduction: Severe asthma is a complex, multidimensional disease. Optimal treatment, adherence and outcomes require shared decision-making, rooted in mutual understanding between patient and clinician. This study used a novel, patient-centred approach to examine the most bothersome aspects of severe asthma to patients, as seen from both perspectives in asthma registries.

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Article Synopsis
  • Hypereosinophilic syndrome (HES) involves high eosinophil levels leading to damage across various organ systems, creating a diverse set of symptoms for affected individuals.
  • A study assessed the impact of mepolizumab, an interleukin-5 targeting treatment, on HES-related symptoms using a daily symptom questionnaire over 32 weeks.
  • Results indicated that mepolizumab significantly reduced symptom severity, notably improving breathing problems, while skin symptoms showed less improvement, underscoring the challenging nature of HES symptoms and the potential benefits of this treatment.
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Article Synopsis
  • The SHARP study aimed to gather real-world evidence on severe asthma treatment by linking data from 10 different national registries across Europe, focusing on patients treated with mepolizumab.
  • The analysis, which included 912 patients, found that mepolizumab significantly reduced the frequency of asthma exacerbations and the use of maintenance oral glucocorticoids before and during the COVID-19 pandemic.
  • The study highlighted considerable variation in patient characteristics and treatment practices between the different registries, emphasizing the diverse nature of severe asthma management in Europe.
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Background: The burden of hypereosinophilic syndrome (HES) in Europe is not well characterized.

Objective: To evaluate real-world patient characteristics, treatment patterns, clinical manifestations, and healthcare resource utilization for patients with HES from France, Germany, Italy, Spain, and the United Kingdom.

Methods: In this retrospective, noninterventional study, data for patients with a physician-confirmed diagnosis of HES were abstracted from medical chart reviews.

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Article Synopsis
  • * Researchers looked at online comments from patients and caregivers about EGPA and HES to understand their experiences and needs.
  • * The main topics discussed were personal experiences, difficulties in getting a diagnosis, and advice about symptoms and treatments, showing that better communication is needed between patients and doctors.
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Unlabelled: In patients with hypereosinophilic syndrome (HES), mepolizumab reduces the incidence of HES-related clinical signs and symptoms (flares). However, reports characterizing flare manifestations are limited. The double-blind, parallel-group 200622 trial (NCT02836496) enrolled patients ≥12 years old with HES for ≥6 months, ≥2 flares in the previous year, and screening blood eosinophil count ≥1000 cells/μL.

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Article Synopsis
  • Mepolizumab, an anti-IL-5 antibody, effectively reduces disease flares in patients with hypereosinophilic syndrome (HES) regardless of their baseline blood eosinophil count (BEC).
  • A study analyzed data from patients aged 12 and older with HES and found that mepolizumab decreased the proportion of patients experiencing flares by 63% to 90%, and flare rates by 58% to 84%.
  • Results indicated that treatment was effective even in patients with undetectable baseline serum IL-5 levels, suggesting that such levels should not prevent mepolizumab therapy.
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Background: Current standard-of-care treatments for hypereosinophilic syndrome (HES) include oral corticosteroids (OCS) and immunosuppressive/cytotoxic (IS/CT) therapies. The anti-IL-5 monoclonal antibody mepolizumab has also recently been approved for patients with this disease. The objective of this analysis was to assess the relationship between baseline therapy and flare reduction in patients with HES treated with mepolizumab, using data from the Phase III 200622 study (NCT02836496).

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Background: Hypereosinophilic syndrome (HES) is a group of rare hematologic disorders leading to eosinophil-driven tissue damage and dysfunction. Better understanding of HES variants may facilitate improved patient management.

Objective: To describe disease characteristics, treatment, and outcomes of patients with idiopathic (I-HES), myeloproliferative (M-HES), lymphocytic (L-HES), and chronic eosinophilic leukemia, not otherwise specified (CEL-NOS) among HES case reports and aggregate data where available.

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Background: Tuberculosis (TB) is a global health issue that has long threatened and continues to threaten human health. While previous studies are important in the search for a cure for TB, to eradicate the disease it is also crucial to analyze environmental influences. Therefore, this study determined the potential effect of inadequate housing on TB and the magnitude of the effect.

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Recent studies have demonstrated that copper (I) thiocyanate (CuSCN) has huge potential as a hole extraction material (HEM) for perovskite solar cells. Here, we used CuSCN as a HEM and analyzed its relationships with a methylammonium lead iodide (MAPbI) perovskite layer. The CuSCN dissolved in diethyl sulfide (DES) was spin-coated on the MAPbI layer.

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We propose a divide-and-conquer approach to detect depression severity using speech. We divide speech features based on their attributes, i.e.

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Polarization-sensitive photodetection has attracted considerable attention as an emerging technology for future optoelectronic applications such as three-dimensional (3D) imaging, quantum optics, and encryption. However, traditional photodetectors based on Si or III-V InGaAs semiconductors cannot directly detect polarized light without additional optical components. Herein, we demonstrate a self-powered linear-polarization-sensitive near-infrared (NIR) photodetector using a two-dimensional WSe/ReSe van der Waals heterostructure.

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Background: The clinical context for using blood eosinophil (EOS) counts as treatment-response biomarkers in asthma and COPD requires better understanding of EOS distributions and ranges. We describe EOS distributions and ranges published in asthma, COPD, control (non-asthma/COPD) and general populations.

Methods: We conducted a comprehensive literature review and meta-analysis of observational studies (January 2008 to November 2018) that included EOS counts in asthma, severe asthma, COPD, control and general populations.

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Eosinophilic granulomatosis with polyangiitis (EGPA) is a rare disease associated with vascular inflammation and multisystem organ damage. The literature reporting EGPA incidence or prevalence is limited. We performed a systematic literature review and meta-analysis to describe the incidence, prevalence, and disease burden associated with EGPA.

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We developed a method of estimating impactors of cognitive function (ICF) - such as anxiety, sleep quality, and mood - using computational voice analysis. Clinically validated questionnaires (VQs) were used to score anxiety, sleep and mood while salient voice features were extracted to train regression models with deep neural networks. Experiments with 203 subjects showed promising results with significant concordance correlation coefficients (CCC) between actual VQ scores and the predicted scores (0.

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Background/aims: The efficacy and safety of mepolizumab in patients with severe eosinophilic asthma has been evaluated in a global clinical trial programme. This post hoc analysis assesses the efficacy and safety of mepolizumab in Korean patients.

Methods: Data from Korean patients in the Phase III, placebo-controlled, randomised DREAM (MEA112997/NCT01000506) and MENSA (MEA115588/ NCT01691521) studies were included.

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Background: Improved understanding of the normal range of blood eosinophil counts (BEC) and conditions that influence them in non-asthmatic individuals should allow more accurate estimation of the threshold at which eosinophilic disease should be considered, diagnosed, and treated. This analysis investigated the impact of atopy, smoking, and parasitic infection on BEC.

Methods: This was a post hoc analysis of non-asthmatic subjects from a case-control study (CONEP 450/10) conducted at the Program for Control of Asthma in Bahia (ProAR).

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Background: Previous analyses examining the relationship between blood eosinophil count and mepolizumab treatment effects in severe eosinophilic asthma have used a range of doses and administration routes.

Methods: This post hoc meta-analysis included data from the MENSA (MEA115588/NCT01691521) and MUSCA (200862/NCT02281318) trials. Patients (≥12 years) with severe eosinophilic asthma who experienced ≥2 exacerbations in the prior year received either mepolizumab 100 mg subcutaneously (SC) or 75 mg intravenously, or placebo plus standard of care every 4 weeks.

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