Publications by authors named "Laurent Arnaud"

Objectives: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with heterogeneous clinical manifestations which significantly impacts the daily lives of patients. Herein, we aimed to (i) investigate patients' perspectives on and experience with SLE; (ii) identify meaningful aspects of health (MAHs) and concepts of interest (COIs) in SLE that could be evaluated using digital clinical measures (DCMs); and (iii) identify target DCMs for their assessment.

Methods: A mixed-methods, multistep approach was deployed for (i) exploring patients' experience with SLE through a social media listening study and focused group discussions with patients; (ii) mapping patients' experiences to define MAHs and identify COIs measurable using DCMs; (iii) selecting DCMs for the target COIs; and (iv) identifying types of wearable sensors for measuring COIs in the patients.

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Objectives: Data on the economic consequences of Systemic Lupus Erythematosus (SLE) and Lupus Nephritis (LN) are scarce in Europe. We aimed to estimate the total direct costs attributable to SLE and LN in France, at the nation-wide level.

Methods: Patients with SLE and LN were identified in the French nation-wide health insurance database (SNDS).

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Objectives: To investigate the risk and predictors of severity and mortality of COVID-19 infection in patients with Connective Tissue Diseases (CTDs).

Methods: Using the French nationwide claims and hospitalization database, we assembled a nation-wide exhaustive cohort of adult CTD patients with rheumatoid arthritis, systemic lupus, Sjögren's disease, inflammatory myopathies, systemic sclerosis. We analyzed the rates of hospitalization, severe inpatient stays (intensive care unit [ICU] admissions or in-hospital mortality), and in-hospital mortality with COVID-19 from January 1st to December 31st, 2020.

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The vascular endothelial barrier maintains intravascular volume and metabolic homeostasis. Although plasma fluids and proteins extravasate continuously from tissue microvasculature (capillaries, post-capillary venules), systemic vascular leakage increases in critical illness associated with sepsis, burns and trauma, among others, or in association with certain drugs or toxin exposures. Systemically dysregulated fluid homeostasis, which can lead to hypovolaemia, hypotensive shock and widespread tissue oedema, has been termed systemic capillary leak syndrome (SCLS) when overt secondary causes (for example, heart or liver failure) are excluded.

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Article Synopsis
  • * It typically affects Caucasians equally across genders and can also be associated with other autoimmune diseases like polyarteritis nodosa.
  • * While ocular symptoms often have a good prognosis with potential recovery of vision, cochleo-vestibular issues can lead to serious and irreversible hearing loss, and treatment options are not well-established due to the condition's rarity.
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Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease characterized by dysregulated immune responses leading to widespread inflammation and damage in various organs. Environmental factors such as infections, hormonal influences and exposure to ultraviolet light can trigger the disease in genetically predisposed individuals. Genome-wide association studies have identified over 100 susceptibility loci linked to immune regulation, interferon (IFN) signaling and antigen presentation in SLE.

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Introduction: The objective of this systematic review was to provide an overview of current developments and potentially available therapeutic options for polymyalgia rheumatic (PMR) and giant cell arteritis (GCA), in the coming years.

Methods: We conducted a systematic review of 17 national and international clinical trial databases for all disease-modifying anti-rheumatic drugs (DMARDs) for PMR and GCA that are already marketed, in clinical development or withdrawn. The search was performed on January 2024, with the keywords "polymyalgia rheumatica" and "giant cell arteritis".

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Article Synopsis
  • - The study aimed to update the 1998 Systemic Lupus Erythematosus (SLE) Core Outcome Set by evaluating existing domains and generating new ones, involving both patients and collaborators in the process.
  • - A survey collected responses from 100 patients and 145 collaborators, revealing that patients focused on life-impact domains while collaborators emphasized clinical aspects, highlighting a need for balanced input from both groups.
  • - Findings showed agreement on some domains for inclusion in the updated SLE Core Outcome Set, while also identifying areas that need more explanation and suggesting new domains for consideration.
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  • Immune thrombotic thrombocytopenic purpura (i-TTP) is a serious condition characterized by a deficiency in ADAMTS-13 and is thought to start with the activation of endothelial cells, leading to vascular damage.
  • The study aimed to explore how endothelial cells detach during thrombotic thrombocytopenic purpura by examining circulating endothelial cells (CECs) in patients and their relationship to disease severity and calcium signaling.
  • Results showed that plasma from i-TTP patients led to greater detachment and altered behavior of endothelial cells compared to control plasma, suggesting that increased vascular permeability may be a key factor in the pathogenesis of the disease.
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SLE presents significant challenges for patients and health-care professionals (HCPs), both across Europe and worldwide. Improving health-care outcomes for patients with SLE requires a comprehensive understanding of patient disease pathways. In particular, the geographical distance between SLE patients and specialized care centres, combined with the scarcity of rheumatologists, exacerbates delays in diagnosis and management.

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Objectives: Vacuoles, E1 enzyme, X-linked, autoinflammatory and somatic (VEXAS) syndrome is an adult-onset autoinflammatory disease associated with somatic ubiquitin-like modifier-activating enzyme 1 (UBA1) mutations. We aimed to evaluate the efficacy and safety of targeted therapies.

Methods: Multicentre retrospective study including patients with genetically proven VEXAS syndrome who had received at least one targeted therapy.

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Relapsing polychondritis is a rare inflammatory disease characterized by recurrent inflammation of cartilaginous structures, mainly of the ears, nose and respiratory tract, with a broad spectrum of accompanying systemic features. Despite its rarity, prompt recognition and accurate diagnosis of relapsing polychondritis is crucial for appropriate management and optimal outcomes. Our understanding of relapsing polychondritis has changed markedly in the past couple of years with the identification of three distinct patient clusters that have different clinical manifestations and prognostic outcomes.

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Systemic lupus erythematosus (SLE) is a multisystemic autoimmune disease characterised by the presence of autoantibodies towards nuclear antigens, immune complex deposition, and chronic inflammation at classic target organs such as skin, joints, and kidneys. Despite substantial advances in the diagnosis and management of SLE, the burden of disease remains high. It is important to appreciate the typical presentations and the diagnostic process to facilitate early referral and diagnosis for patients.

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Objective: This international task force aimed to provide healthcare professionals and persons living with systemic lupus erythematosus (SLE) with consensus-based recommendations for physical activity and exercise in SLE.

Methods: Based on evidence from a systematic literature review and expert opinion, 3 overarching principles and 15 recommendations were agreed on by Delphi consensus.

Results: The overarching principles highlight the importance of shared decision-making and the need to explain the benefits of physical activity to persons living with SLE and other healthcare providers.

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Antimalarials (AMs), particularly hydroxychloroquine (HCQ) and chloroquine (CQ), are the cornerstone of the treatment for both systemic lupus erythematosus (SLE) and cutaneous lupus erythematosus (CLE). HCQ and CQ are recommended as first-line oral agents in all CLE guidelines. Initially thought to have potential therapeutic effects against COVID-19, HCQ has drawn significant attention in recent years, highlighting concerns over its potential toxicity among patients and physicians.

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We performed a systematic review to explore existing evidence regarding the efficacy of lifestyle interventions for the management of systemic lupus erythematosus (SLE). The search was conducted on the 22nd of June 2021 for publications between 1st of January 2000 and the date of search. Additional articles within the aforementioned timeframe and until December 2023 were added by hand searching.

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The paradigm of drug approval in SLE currently relies on successful large phase III randomised controlled trials and a set of primary, secondary and additional end points. Taken together, these outcomes offer a nuanced understanding of the efficacy and safety of the investigational agent. In this review, we thoroughly examine the main outcomes used in SLE trials and highlight unmet requirements as well as potential venues for future trial design in SLE.

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Objective: To gain consensus on the definitions and descriptions of the domains of the Outcome Measures in Rheumatology (OMERACT) core domain set for rheumatology trials evaluating shared decision making (SDM) interventions.

Methods: Following the OMERACT Handbook methods, our Working Group (WG), comprised of 90 members, including 17 patient research partners (PRPs) and 73 clinicians and researchers, had six virtual meetings in addition to email exchanges to develop draft definitions and descriptions. The WG then conducted an international survey of its members to gain consensus on the definitions and descriptions.

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Article Synopsis
  • Cutaneous lupus erythematosus (CLE) can occur on its own or alongside systemic lupus erythematosus (SLE), where lab tests show specific abnormalities.
  • This study aimed to compare isolated CLE to CLE with lab-confirmed SLE and to validate a scoring system predicting the risk of developing severe SLE (sSLE).
  • Results indicated that patients with CLE and laboratory SLE had a significantly higher risk of progressing to sSLE compared to those with isolated CLE, though the study had limitations due to its small, single-center patient sample.
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Objectives: Shared decision making (SDM) is a central tenet in rheumatic and musculoskeletal care. The lack of standardization regarding SDM instruments and outcomes in clinical trials threatens the comparative effectiveness of interventions. The Outcome Measures in Rheumatology (OMERACT) SDM Working Group is developing a Core Outcome Set for trials of SDM interventions in rheumatology and musculoskeletal health.

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Objectives: Tropheryma whipplei infection can manifest as inflammatory joint symptoms, which can lead to misdiagnosis of inflammatory rheumatic disease and the use of disease-modifying antirheumatic drugs. We investigated the impact of diagnosis and treatment of Tropheryma whipplei infection in patients with inflammatory rheumatic disease.

Methods: We initiated a registry including patients with disease-modifying antirheumatic drugs-treated inflammatory rheumatic disease who were subsequently diagnosed with Tropheryma whipplei infection.

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