Publications by authors named "Murray Baron"

Introduction: Digital ulcers are an important disease manifestation of systemic sclerosis and are associated with significant morbidity. As such, there is an urgent need for the development of evidence-based recommendations to guide clinicians in the treatment of digital ulcers.

Methods: A steering committee of international experts was established.

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Objectives: Physician global assessments (PhyGAs) are commonly performed in randomised controlled trials (RCTs) in systemic sclerosis (SSc). However, there is no single PhyGA applied across RCTs. We performed an exploratory qualitative study to explore perceptions of the PhyGA, its role in RCTs and how physicians perform their own assessment.

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Introduction: Digital ulcers (DUs) stand out as one of the most prevalent and clinically meaningful manifestations of systemic sclerosis (SSc) and are associated with significant morbidity. While systemic (pharmacological) therapy is currently established as the 'standard of care', effective local ulcer management remains crucial for all cases of DUs. This is particularly true for patients who cannot tolerate systemic treatments or in the case of refractory SSc-DUs.

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Objective: The Scleroderma Clinical Trials Consortium Damage Index is an index of global damage in systemic sclerosis. The objective of this study is to determine the minimal clinically important difference of the Scleroderma Clinical Trials Consortium Damage Index.

Methods: Patients in the Canadian Scleroderma Research Group registry and the Australian Scleroderma Cohort Study who completed Scleroderma Clinical Trials Consortium Damage Index scores and the SF36v2 at baseline and the first full follow-up visit were studied.

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Systemic sclerosis (SSc) is a severe, progressive disease with limited treatment options. Autologous hematopoietic stem cell transplantation (AHSCT) has been shown to be an effective treatment for rapidly progressive SSc. The objective of this study was to evaluate the effectiveness of AHSCT for SSc compared to real-world clinical care.

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Objective: Organ damage in patients with systemic sclerosis (SSc) in individual organs such as the lungs may be prevented by receiving immunosuppressive drugs (ISs). A new measure of global organ damage, the Scleroderma Clinical Trials Consortium Damage Index (SCTC-DI), has allowed us to investigate whether receiving ISs may reduce global organ damage accrual in patients with early SSc.

Methods: This was a retrospective study of patients with two or less years of disease duration in Canadian and Australian cohorts with SSc.

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Article Synopsis
  • * Analysis of 1,965 participants revealed that while PhyGA scores were strongly correlated at visits, changes were discordant 50% of the time, highlighting variations in patient experiences.
  • * Findings indicate that PhyGAs for overall health, activity, and damage relate to distinct SSc features, suggesting a need for a standardized assessment to improve consistency in clinical evaluations.
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Objectives: To investigate the burden and clinical associations of fatigue in systemic sclerosis (SSc) as measured by FACIT-Fatigue scores.

Methods: Australian Scleroderma Cohort Study participants with ≥1 FACIT-Fatigue score were included. Participants were divided into those with incident SSc (≤5 years SSc duration at recruitment and FACIT-Fatigue score recorded within 5 years of disease onset) or prevalent SSc (first FACIT-Fatigue score recorded >5 years after SSc onset).

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Objectives: To identify the trajectories and clinical associations of functional disability in systemic sclerosis (SSc).

Methods: Australian Scleroderma Cohort Study (ASCS) participants meeting ACR/EULAR criteria for SSc recruited within 5 years of disease onset, with ≥2 Health Assessment Questionnaire-Disability Index (HAQ-DI) scores were included. Group based trajectory modelling (GBTM) was used to identify the number and shape of HAQ-DI trajectories.

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Background: Systemic sclerosis (SSc) is a systemic life-threatening autoimmune rheumatic disease. We aimed to assess the incidence, prevalence, mortality and spatiotemporal trends of SSc in Quebec, Canada with stratification by sex and age.

Methods: SSc cases were identified from Quebec populational databases from 1989 to 2019.

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Objective: Accurate measurement of disease activity in systemic sclerosis (SSc) remains a significant clinical challenge. The Scleroderma Clinical Trials Consortium (SCTC) convened an Activity Index (AI) Working Group (WG) to develop a novel measure of disease activity (SCTC-AI).

Methods: Using consensus methodology, we developed a conceptual definition of disease activity.

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Objective: We explored the efficacy and safety of brentuximab vedotin, a chimeric anti-CD30 antibody drug conjugate, in patients with severe active diffuse cutaneous systemic sclerosis (dcSSc).

Methods: This phase II proof-of-concept, single centre, open-label, single arm, investigator-initiated trial included patients ≥18 years, with dcSSc, modified Rodnan skin score (mRSS) ≥15 with <5 years since the first non-Raynaud's symptom and/or skin worsening despite immunosuppression who were treated with intravenous brentuximab vedotin 0.6 mg/kg q3 weeks for 45 weeks.

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Gastroesophageal reflux disease (GERD) is associated with significant morbidity in patients with systemic sclerosis (SSc). Although the introduction of proton pump inhibitors (PPIs) into clinical care have represented a major achievement in the management of oesophago-gastric problems in SSc, PPIs are seldom fully effective in SSc patients, and the utilization of maximum PPI dosages is a very frequent clinical practice. However, currently there is little evidence currently to support the empiric use of PPIs in SSc which is especially relevant in regard to safety concerns of long-term exposure with have been raised in the general population.

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Background: There is a strong rationale to develop locally-acting surgical treatments for digital ulcers (DUs) in patients with systemic sclerosis (SSc). Our aim was to examine the safety and efficacy of local surgical management for SSc-DU.

Methods: A systematic literature review was carried out until to August 2022 using 7 different databases.

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Article Synopsis
  • Digital ulcers (DUs) in people with systemic sclerosis (SSc) are tough to treat, and doctors usually use medicine as the main treatment.
  • Researchers looked at different studies to see how safe and effective local treatments, like injections, are for DUs.
  • They found treatments like botulin A toxin injections were really effective, while others like Vitamin E gel and creams helped too, but some treatments had side effects.
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Objective: To evaluate the evidence concerning systemic pharmacological treatments for SSc digital ulcers (DUs) to inform the development of evidence-based treatment guidelines.

Methods: A systematic literature review of seven databases was performed to identify all original research studies of adult patients with SSc DUs. Randomized controlled trials (RCTs) and prospective longitudinal observational studies (OBSs) were eligible for inclusion.

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This Special Issue, titled "Rheumatic Diseases: Pathophysiology, Targeted Therapy, Focus on Vascular and Pulmonary Manifestations", aims to demonstrate recent and new advances and future trends in the field of rheumatic diseases [...

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Objective: To explore the trajectory of scleroderma disease activity in women who experienced a pregnancy after systemic sclerosis diagnosis compared to nulliparous women.

Methods: We analyzed data from the Canadian Scleroderma Research Group registry by identifying nulliparous women and women with ⩾1 pregnancy after systemic sclerosis diagnosis. Patient characteristics were compared between groups at registry entry.

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Objectives: Damage accrual in SSc can be tracked using the Scleroderma Clinical Trials Consortium Damage Index (DI). Our goal was to develop a prediction model for damage accrual in SSc patients with early disease.

Methods: Using patients with <2 years disease duration from Canada and Australia as a derivation cohort, and from the Netherlands as a validation cohort, we used group-based trajectory modelling (GBTM) to determine 'good' and 'bad' latent damage trajectories.

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Objective: To assess whether patient and physician global assessment of gastrointestinal tract (GIT) disease in systemic sclerosis (SSc) are associated with a meaningful change in disease status.

Methods: One hundred forty-three participants from the Australian Scleroderma Cohort Study were recruited to this study. Using logistic regression analysis, we evaluated the relationship between patient-reported and physician-assessed GIT disease status and symptoms, measures of health-related quality of life (36-item Short Form Health Survey [SF-36]) and GIT disease severity, measured by the Scleroderma Clinical Trials Consortium UCLA Gastrointestinal Tract 2.

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Global assessments of disease by both patients and physicians are widely used in clinical studies of systemic sclerosis (SSc). They are commonly secondary end points in randomized controlled trials (RCTs) and are considered important items in composite measures of treatment response. A comprehensive literature review was conducted of the formats, wording, and clinimetric properties of the patient global assessment of disease status (PtGA) and physician global assessment of disease status (PhGA) used in RCTs of SSc.

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