Publications by authors named "Hummers L"

Objective: In systemic sclerosis (SSc), absent contractility (AC) rather than ineffective esophageal motility on manometry is associated with a severe esophageal and extraintestinal phenotype. We sought to determine whether slow esophageal transit on scintigraphy associates with a comparable clinical phenotype to that of AC on manometry, as scintigraphy may serve as a noninvasive approach to risk-stratify patients with SSc.

Methods: Clinical, demographic, and serologic features were compared between patients with and without delayed esophageal transit on scintigraphy.

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Objective: To evaluate the psychometric properties of the Scleroderma Skin Questionnaire (SSQ), a novel patient-reported outcome (PRO) to assess systemic sclerosis (SSc) related skin symptoms.

Methods: The SSQ was administered to 799 adults (mean age 52.7; 82% female) enrolled in the SSc Collaborative National Quality and Efficacy Registry (CONQUER).

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Purpose Of Review: The present review aims to address systemic sclerosis (SSc)-associated myocardial disease, a significant cause of morbidity and mortality, by examining the mechanisms of inflammation, microvascular dysfunction, and fibrosis that drive cardiac involvement. The objective is to elucidate critical risk factors and explore advanced diagnostic tools for early detection, enhancing patient outcomes by identifying those at highest risk.

Recent Findings: Recent studies underscore the importance of specific autoantibody profiles, disease duration, and cardiovascular comorbidities as key risk factors for severe cardiac manifestations in SSc.

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Article Synopsis
  • Cutaneous telangiectasia (Tel) are dilated blood vessels in the skin and are common symptoms of systemic sclerosis (SSc), which can aid in diagnosing and classifying the disease.
  • * Despite their significance, the impact of SSc-Tel on patients' body image and social interactions is often underestimated by healthcare providers.
  • * The review emphasizes the need for more research on the pathogenesis, diagnostic importance, and treatment options for SSc-Tel to better support affected individuals.
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  • A study compared fatigue levels in a large group of people with systemic sclerosis (SSc) to typical fatigue levels in the general population, finding that SSc patients experienced significantly more fatigue.
  • Participants included 2,385 individuals, with a majority being female and averaging around 55 years old, and it was noted that 18% reported mild fatigue, 27% moderate fatigue, and 8% severe fatigue.
  • Factors such as age, gender, marital status, fatigue-related lifestyle choices (like smoking and BMI), and specific disease features (like gastrointestinal issues and joint problems) were all linked to higher fatigue scores in SSc patients.
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  • The study investigates small bowel issues in systemic sclerosis (SSc) patients, finding that around 50% of these patients are affected, often severely.
  • Using statistical analysis, researchers compared clinical characteristics of SSc patients with and without small bowel abnormalities, revealing that those with issues were more likely to be male, had worse cardiac problems, and lower rates of dry mouth/eyes (sicca symptoms).
  • The study concludes that recognizing patients with abnormal small bowel transit can help in risk assessment and improving patient care, as these individuals showed higher mortality rates.
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  • Dynamic prediction of treatment effects in precision medicine faces challenges due to unknown treatment assignments and outcomes in observational studies.
  • A new multivariate generalized linear mixed-effects model and Bayesian g-computation algorithm are introduced to estimate the benefits of dynamic treatment regimens for different subgroups.
  • The method incorporates unmeasured factors as random effects and is validated through simulation, along with its application to assess the efficacy of mycophenolate in scleroderma patients.
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Background: Raynaud's phenomenon is the earliest and most common systemic sclerosis manifestation. Episodes can be triggered by cold exposure and ambient temperature changes. Small studies have found that Raynaud's phenomenon outcomes were associated with season.

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Article Synopsis
  • The study focuses on systemic sclerosis (SSc) and aims to identify different gastrointestinal (GI) phenotypes among patients, considering how these can change over time in severity.* -
  • Researchers analyzed data from 2,696 SSc patients and discovered four distinct GI phenotypes: one stable group and three progressive groups, with variations in symptom severity and mortality.* -
  • The findings suggest that these GI phenotypes are linked to specific autoantibody profiles, highlighting the clinical significance of understanding these patterns for better patient management.*
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Objective: Systemic sclerosis (SSc) is a rare, chronic autoimmune disorder associated with disability, diminished physical function, fatigue, pain, and mental health concerns. We assessed minimal detectable changes (MDCs) of the Health Assessment Questionnaire-Disability Index (HAQ-DI), Patient-Reported Outcomes Measurement Information System-29 Profile version 2.0 (PROMIS-29v2.

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  • Systemic sclerosis (SSc) is typically seen as a contraindication for radiation therapy, but this study evaluates the outcomes of patients with both SSc and locally advanced head and neck (H&N) cancer treated with radiation.
  • Thirteen SSc patients who underwent radiation therapy were analyzed, revealing a five-year survival rate of 54%, with notable side effects including skin thickening and reduced neck motion in many cases, yet no significant progression of SSc-related lung disease.
  • Treatment strategies like pentoxifylline and vitamin E were employed to combat radiation-induced fibrosis, indicating that while there are risks, effective management is possible during radiation therapy for these patients.
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Background: Pulmonary hypertension (PH) is a leading cause of death in patients with systemic sclerosis (SSc). An important component of SSc patient management is early detection and treatment of PH. Recently the threshold for the diagnosis of PH has been lowered to a mean pulmonary artery pressure (mPAP) threshold of > 20 mmHg on right heart catheterization (RHC).

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  • Researchers studied the differences in metabolism between systemic sclerosis (SSc) patients who develop pulmonary arterial hypertension (PAH) and those who do not to identify potential disease biomarkers.
  • They analyzed serum metabolites from matched SSc patients using liquid chromatography-mass spectrometry (LC-MS) at various time points relative to PAH diagnosis.
  • Results showed significant differences in long-chain fatty acid (LCFA) metabolism between SSc-PAH patients and those without PAH, suggesting that specific lipid metabolites could predict the development of PAH before clinical diagnosis.
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Objectives: To compare physical function in systemic sclerosis (SSc, scleroderma) to general population normative data and identify associated factors.

Methods: Scleroderma Patient-centered Intervention Network Cohort participants completed the Physical Function domain of the Patient-Reported Outcomes Measurement Information System Version 2 upon enrolment. Multivariable linear regression was used to assess associations of sociodemographic, lifestyle, and disease-related variables.

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Objective: The objectives were to (1) compare satisfaction with social roles and activities in a large multinational systemic sclerosis (SSc) cohort to general population normative data and (2) identify sociodemographic, lifestyle and SSc disease factors associated with satisfaction with social roles and activities.

Methods: Participants in the Scleroderma Patient-centered Intervention Network Cohort completed the Patient Reported Outcomes Information System Version 2 satisfaction with social roles and activities domain questionnaire. Multivariable regression was used to assess associations with sociodemographic, lifestyle and disease factors.

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We present a case series of four patients with systemic sclerosis and skeletal myopathy. While idiopathic inflammatory myopathies, or myositis, are thought to be the most common type of muscle disease seen in systemic sclerosis, we highlight four cases where unique clinical findings and careful assessment ruled out myositis mimics. Key diagnostic tools that can be helpful for clinicians to diagnose a neuromuscular disease are also detailed in this report.

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Understanding metabolic evolution underlying pulmonary arterial hypertension (PAH) development may clarify pathobiology and reveal disease-specific biomarkers. Patients with systemic sclerosis (SSc) are regularly surveilled for PAH, presenting an opportunity to examine metabolic change as disease develops in an at-risk cohort. We performed mass spectrometry-based metabolomics on longitudinal serum samples collected before and near SSc-PAH diagnosis, compared with time-matched SSc subjects without PAH, in a SSc surveillance cohort.

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Objectives: Systemic Sclerosis (SSc) is frequently associated with gastrointestinal tract (GIT) involvement. The Collaborative National Quality and Efficacy Registry (CONQUER) is a US-based collaborative study collecting longitudinal follow up data on SSc patients with less than 5-years disease duration enrolled at Scleroderma centres of excellence. This manuscript presents the GIT natural history and outcomes in relation to other scleroderma manifestations and medication exposures.

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Objective: To evaluate the degree that the Cochin Hand Function Scale (CHFS) generates scores that are comparable across language, sex, and disease subtype.

Methods: We included participants enrolled in the Scleroderma Patient-centered Intervention Network (SPIN) Cohort who completed the CHFS at their baseline assessment between April 2014 and September 2020. Confirmatory factor analysis (CFA) was used to test unidimensionality, and multiple indicator multiple cause (MIMIC) models were used for differential item functioning (DIF) analysis based on language, sex, and disease subtype.

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Article Synopsis
  • The study aimed to investigate the relationship between specific scleroderma autoantibodies and the risk of developing cancer in patients, assessing their potential for use in risk assessment.
  • Researchers analyzed data from 676 cancer cases and 687 controls, focusing on various autoantibodies and their correlation with cancer risk, using logistic regression and random forest analysis.
  • Results indicated that certain autoantibodies (like anti-POLR3 and anti-Ro52) were linked to increased cancer risk, whereas others (such as anticentromere and anti-U1RNP) were associated with decreased risk, suggesting these immune responses could help stratify cancer risk in scleroderma patients.
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Objectives: Assessment of construct validity and reliability of a novel patient-reported outcome (PRO) instrument for assessing the severity and impact of RP in SSc.

Methods: An international multicentre study validation study of the 27-item Assessment of Systemic Sclerosis-Associated Raynaud's Phenomenon (ASRAP) and 10-item short-form (ASRAP-SF) questionnaires. The relationship between ASRAP questionnaires and demographics, clinical phenotype and legacy instruments for assessing SSc-RP severity, disability and pain was assessed.

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Objective: This phase 3 study was undertaken to investigate the efficacy and safety of lenabasum, a cannabinoid type 2 receptor agonist, in patients with diffuse cutaneous systemic sclerosis (dcSSc).

Methods: A multinational double-blind study was conducted in 365 dcSSc patients who were randomized and dosed 1:1:1 with lenabasum 20 mg, lenabasum 5 mg, or placebo, each twice daily and added to background treatments, including immunosuppressive therapies (IST).

Results: The primary end point, the American College of Rheumatology combined response index in dcSSc (CRISS) at week 52 for lenabasum 20 mg twice a day versus placebo, was not met, with CRISS score of 0.

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Objectives: SSc is associated with increased health-care resource utilization and economic burden. The Collaborative National Quality and Efficacy Registry (CONQUER) is a US-based collaborative that collects longitudinal follow-up data on SSc patients with <5 years of disease duration enrolled at scleroderma centres in the USA. The objective of this study was to investigate the relationship between gastrointestinal tract symptoms and self-reported resource utilization in CONQUER participants.

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Objectives: Ectopic calcification (calcinosis) is a common complication of SSc, but a subset of SSc patients has a heavy burden of calcinosis. We examined whether there are unique risk factors for a heavy burden of calcinosis, as compared with a light burden or no calcinosis.

Methods: We reviewed the medical records of all patients in the Johns Hopkins Scleroderma Center Research Registry with calcinosis to quantify calcinosis burden using pre-specified definitions.

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