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Touma Z, Costenbader KH, Hoskin B, Atkinson C, Bell D, Pike J, Berry P, Karyekar CS. Patient-reported outcomes and healthcare resource utilization in systemic lupus erythematosus: impact of disease activity. BMC Rheumatol 2024; 8:22. [PMID: 38840229 DOI: 10.1186/s41927-023-00355-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/02/2023] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND Limited real-world data exists on clinical outcomes in systemic lupus erythematosus (SLE) patients by SLE Disease Activity Index 2000 (SLEDAI-2 K), hereafter, SLEDAI. We aimed to examine the association between SLEDAI score and clinical, patient-reported and economic outcomes in patients with SLE. METHODS Rheumatologists from the United States of America and Europe provided real-world demographic, clinical, and healthcare resource utilization (HCRU) data for SLE patients. Patients provided self-reported outcome data, capturing their general health status using the EuroQol 5-dimension 3-level questionnaire (EQ-5D-3 L), health-related quality of life using the Functional Assessment of Chronic Illness Therapy (FACIT) and work productivity using the Work Productivity and Activity Impairment questionnaire (WPAI). Low disease activity was defined as SLEDAI score ≤ 4 and ≤ 7.5 mg/day glucocorticoids; patients not meeting these criteria were considered to have "higher" active disease. Data were compared between patients with low and higher disease activity. Logistic regression estimated a propensity score for SLE based on demographic and clinical characteristics. Propensity score matched analyses compared HCRU, patient-reported outcomes, income loss and treatment satisfaction in patients with low disease activity versus higher active disease. RESULTS Data from 296 physicians reporting on 730 patients (46 low disease activity, 684 higher active disease), and from 377 patients' self-reported questionnaires (24 low disease activity, 353 higher active disease) were analyzed. Flaring in the previous 12 months was 2.6-fold more common among patients with higher versus low active disease. Equation 5D-3 L utility index was 0.79 and 0.88 and FACIT-Fatigue scores were 34.78 and 39.79 in low versus higher active disease patients, respectively, indicating better health and less fatigue, among patients with low versus higher active disease. Absenteeism, presenteeism, overall work impairment, and total activity impairment were 47.0-, 2.0-, 2.6- and 1.5-fold greater in patients with higher versus low disease activity. In the previous 12 months there were 28% more healthcare consultations and 3.4-fold more patients hospitalized in patients with higher versus low disease activity. CONCLUSION Compared to SLE patients with higher active disease, patients with low disease activity experienced better health status, lower HCRU, less fatigue, and lower work productivity impairment, with work absenteeism being substantially lower in these patients.
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Affiliation(s)
| | | | | | | | | | | | - Pamela Berry
- Janssen Global Services, Montgomery County, Horsham, PA, USA
| | - Chetan S Karyekar
- Research & Development, Janssen Pharmaceuticals, Spring House, Montgomery County, Pennsylvania, USA
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Jones SA, Morand EF. Targeting Interferon Signalling in Systemic Lupus Erythematosus: Lessons Learned. Drugs 2024; 84:625-635. [PMID: 38807010 PMCID: PMC11196297 DOI: 10.1007/s40265-024-02043-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2024] [Indexed: 05/30/2024]
Abstract
The development of new medicines for systemic lupus erythematosus (SLE) has not addressed unmet clinical need, with only three drugs receiving regulatory approval for SLE in the last 60 years, one of which was specifically licensed for lupus nephritis. In the last 20 years it has become clear that activation of type 1 interferons (IFN) is reproducibly detected in the majority of SLE patients, and the actions of IFN in the immune system and on target tissues is consistent with a pathogenic role in SLE. These findings led to considerable drug discovery activity, first with agents directly targeting IFN family cytokines, with results that were encouraging but underwhelming. In contrast, targeting the type I IFN receptor with the monoclonal antibody anifrolumab, thereby blocking all IFN family members, was effective in a phase II clinical trial. This led to a pair of phase III trials, one of which was negative and the other positive, reflecting the difficulty of obtaining outcomes from trials in this complex disease. Nonetheless, the balance of evidence resulted in approval of anifrolumab in multiple jurisdictions from 2021 onwards. Multiple approaches to targeting the type 1 IFN pathway have subsequently had positive phase II clinical trials, including antibodies targeting cells that produce IFN, and small molecules targeting the receptor kinase TYK2, required for IFN signalling. Despite multiple hurdles, it is clear that IFN targeting in SLE is here to stay. The story of IFN-targeting therapy in SLE has lessons for drug development overall in this disease.
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Affiliation(s)
- Sarah A Jones
- Centre for Inflammatory Disease, Monash University, Clayton, Australia
| | - Eric F Morand
- Centre for Inflammatory Disease, Monash University, Clayton, Australia.
- Department of Rheumatology, Monash Health, Melbourne, Australia.
- Monash Medical Centre, 246 Clayton Rd, Clayton, VIC, 3168, Australia.
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Tani C, Zucchi D, Cardelli C, Elefante E, Signorini V, Schilirò D, Cascarano G, Gualtieri L, Valevich A, Puccetti G, Carli L, Stagnaro C, Mosca M. Analysis of belimumab prescription and outcomes in a 10-year monocentric cohort: is there an advantage with early use? RMD Open 2024; 10:e003981. [PMID: 38609320 PMCID: PMC11029263 DOI: 10.1136/rmdopen-2023-003981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 03/19/2024] [Indexed: 04/14/2024] Open
Abstract
OBJECTIVE The objective is to evaluate perscriptions of belimumab (BEL), how these have changed over the years and their impact on clinical outcomes in patients with systemic lupus erythematosus (SLE). METHODS This is a retrospective analysis of prospectively collected data. We retrieved demographic and clinical data and concomitant therapies at BEL starting (baseline). Disease activity was assessed at baseline and after 6 and 12 months and organ damage at baseline and at the last visit. RESULTS From 422 patients followed in the Pisa SLE cohort, 102 patients received BEL and were included and 22 (21.6%) were immunosuppressant (IS)-naïve. Lupus Low Disease Activity State (LLDAS) with a glucocorticoid (GC) dosage ≤5 mg/day (LLDAS5) and remission were achieved by 47% and 38% of patients at 6 months, and by 75% and 66% at 12 months. Comparing IS-naïve patients with those who received BEL after at least one conventional IS, we did not find significant differences in baseline characteristics and in the achievement of LLDAS5 and remission. Despite at baseline we did not observe significant differences in mean GC daily dosage, IS-naïve patients were taking a significantly lower GC daily dose at 6 and 12 months. Interestingly, IS-naïve patients were more common in the most recent years. CONCLUSIONS Our data confirm that BEL is effective in controlling disease activity, and in recent years BEL has been considered as an earlier treatment option before other IS. Early introduction of BEL can be at least as effective as a step-up approach and can help to reduce the GC dosage.
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Affiliation(s)
- Chiara Tani
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Dina Zucchi
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Chiara Cardelli
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Elena Elefante
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Viola Signorini
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Davide Schilirò
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Giancarlo Cascarano
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Luca Gualtieri
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Anastasiya Valevich
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Giulia Puccetti
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Linda Carli
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Chiara Stagnaro
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Marta Mosca
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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Goldner B, Staffier KL. Case series: raw, whole, plant-based nutrition protocol rapidly reverses symptoms in three women with systemic lupus erythematosus and Sjögren's syndrome. Front Nutr 2024; 11:1208074. [PMID: 38505266 PMCID: PMC10949923 DOI: 10.3389/fnut.2024.1208074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 01/05/2024] [Indexed: 03/21/2024] Open
Abstract
Systemic lupus erythematosus (SLE) and Sjögren's syndrome (SS) are chronic autoimmune diseases. Symptoms of SLE can vary widely but often include fatigue, pain, photosensitivity, and, in some cases, nephritis. SS is frequently characterized by extreme dry eye and mouth, resulting from damage to moisture-producing glands, and is often present in combination with SLE. While the health benefits of plant-based diets have been well-established with respect to weight and cardiometabolic outcomes, less research is available to support the role of diet in treatment and management of autoimmune disease. This case series presents three women with SLE and SS who adopted a nutrition protocol to reverse symptoms of autoimmune disease. The protocol emphasizes leafy greens, cruciferous vegetables, omega-3 polyunsaturated fatty acids, and water, and includes predominately raw foods. The three patients reported dramatic improvements in physical symptoms, with nearly all symptoms of SLE and SS resolving after 4 weeks or less of adhering to the protocol. All three patients have remained symptom-free, two of whom have remained symptom-free for 6+ years with no recent medication use. Patients and practitioners should be made aware of the promising possibility of food as medicine in the treatment of SLE and SS. Future research should explore whether dietary changes may be a potential treatment strategy for individuals suffering from severe symptoms and poor quality of life due to SLE and SS.
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Hunnicutt JN, Fairburn-Beech J, Georgiou ME, Richards A, Gregan YI, Quasny H, Chauhan D. Evaluating disease control following belimumab treatment in patients with SLE enrolled in the US OBSErve study. Lupus Sci Med 2022; 9:9/1/e000710. [PMID: 36450407 PMCID: PMC9716789 DOI: 10.1136/lupus-2022-000710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 10/23/2022] [Indexed: 12/02/2022]
Abstract
OBJECTIVE To characterise disease control and remission in patients with SLE receiving belimumab for up to 12 months in the real world. METHODS This post hoc analysis (GSK Study 213502) used data from the US evaluation Of use of Belimumab in clinical practice SEttings (OBSErve) study (GSK Study 117295), an observational cohort study of adults with SLE initiating and continuing belimumab for ≥6 months. Data were collected every 6 months by physician chart review; details of disease activity using the Safety of Estrogens in Lupus Erythematosus National Assessment-SLE Disease Activity Index (SELENA-SLEDAI) score were collected if routinely used by physicians. Disease control definitions evaluated were SELENA-SLEDAI score of ≤2 at 12 months, SELENA-SLEDAI score of ≤2 and glucocorticoid (prednisone equivalent) dose of ≤5 mg/day at 12 months, SELENA-SLEDAI score of ≤2 and glucocorticoid dose of ≤5 mg/day at both 6 and 12 months. Disease remission definition was SELENA-SLEDAI score=0 at 12 months. Glucocorticoid dose during follow-up was quantified. RESULTS US OBSErve enrolled 501 patients, 90 of whom had eligible SELENA-SLEDAI scores for inclusion in this analysis. Mean (SD) SELENA-SLEDAI scores were 13.1 (3.0) at baseline and 4.9 (3.4) at 12 months. Disease control at 12 months was achieved by 31.1% of patients when defined as a SELENA-SLEDAI score of ≤2 (95% CI 21.8 to 41.7); this decreased to 25.6% when requiring a SELENA-SLEDAI score of ≤2 and glucocorticoid dose of ≤5 mg/day (95% CI 16.9 to 35.8) and 17.8% when requiring a SELENA-SLEDAI score of ≤2 and glucocorticoid dose of ≤5 mg/day at both 6 and 12 months (95% CI 10.5 to 27.3). No patient achieved remission at 12 months. Glucocorticoids decreased from a baseline median of 20.0 mg/day (IQR 15.0-30.0) to 5.0 mg/day (IQR 0-10.0) at 12 months. CONCLUSION Improved disease control and reduced glucocorticoid use was achieved for a proportion of patients following up to 12 months of belimumab treatment in a US real-world setting.
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Affiliation(s)
| | | | | | | | - Yun Irene Gregan
- Clinical Science Immunology, GSK, Collegeville, Pennsylvania, USA
| | - Holly Quasny
- Research and Development, GSK, Durham, North Carolina, USA
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Rua-Figueroa Fernández de Larrinoa Í, Lozano MJC, Fernández-Cid CM, Cobo T, Salman Monte TC, Freire González M, Hidalgo Bermejo FJ, Román Gutiérrez CS, Cortés-Hernández J. Preventing organ damage in systemic lupus erythematosus: the impact of early biological treatment. Expert Opin Biol Ther 2022; 22:821-829. [PMID: 35815355 DOI: 10.1080/14712598.2022.2096406] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION One of the most important aims in the management of systemic lupus erythematosus (SLE) is to avoid or delay the accumulation of organ damage. The first five years after diagnosis are crucial for prognosis. AREAS COVERED This manuscript reviews available data on organ damage accrual in SLE and early therapeutic intervention as a possible strategy to prevent its long-term accrual. EXPERT OPINION Organ damage can be minimized by controlling disease activity and risk of flares, reducing the dose of glucocorticoids, and ensuring a proper therapeutic intervention with an early introduction of the right therapies. The current standard treatment cannot provide clinical remission in all patients with SLE. Therefore, there is a clinical need for introducing new therapeutic strategies able to achieve the main therapeutic objectives. The addition of biologic and other therapeutic agents to the standard of care is effective for controlling disease activity and for preventing severe flares, enabling a reduced use of glucocorticoids, and presumably reducing organ damage progression. Considering its efficacy and safety, early inclusion of biologic agents in the first lines of the treatment algorithm, at least in certain patients, could be considered as an innovative treatment approach to decrease disease burden in SLE patients.
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Affiliation(s)
| | | | | | - Tatiana Cobo
- Rheumatology Department, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Tarek C Salman Monte
- Rheumatology Department, Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain
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Connelly K, Morand EF. Easy-BILAG: as easy as ABC? Rheumatology (Oxford) 2022; 61:3879-3880. [PMID: 35171270 DOI: 10.1093/rheumatology/keac062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 01/25/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Kathryn Connelly
- School of Clinical Sciences, Monash University, Clayton, Australia.,Department of Rheumatology, Monash Health, Clayton, Australia
| | - Eric F Morand
- School of Clinical Sciences, Monash University, Clayton, Australia.,Department of Rheumatology, Monash Health, Clayton, Australia
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Perea-Seoane L, Agapito-Vera E, Gamboa-Cardenas RV, Guzmán-Sánchez G, Pimentel-Quiroz VR, Reategui-Sokolova C, Medina M, Elera-Fitzcarrald C, Noriega E, Rodriguez-Bellido Z, Pastor-Asurza C, Perich-Campos R, Alarcón GS, Ugarte-Gil MF. Relationship between care model and disease activity states and health-related quality of life in systemic lupus erythematosus patients. Lupus 2021; 31:110-115. [PMID: 34969318 DOI: 10.1177/09612033211063798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To assess whether the care model (comprehensive vs regular) has any impact on the clinical outcomes of systemic lupus erythematosus patients. METHODS Between August 2019 and January 2020, we evaluated SLE patients being cared for at two Peruvian hospitals to define the impact of care model on disease activity state and health-related quality of life (HRQoL). Disease activity was ascertained with the SLEDAI-2K and the Physician Global Assessment (PGA) which allows to define Lupus Low Disease Activity State (LLDAS) and Remission. HRQoL was measured with the LupusQoL. The association between care model and disease activity (Remission and LLDAS) state was examined using a binary logistic regression model. The association with HRQoL was examined with a linear regression model. All multivariable analyses were adjusted for possible confounders. RESULTS 266 SLE patients were included, 227 from the comprehensive care model and 39 from the regular care model. The regular care model was associated with a lower probability of achieving remission (OR 0.381; CI: 95% 0.163-0.887) and LLDAS (OR 0.363; CI: 95% 0.157-0.835). Regular care was associated with a better HRQoL in two domains (pain and emotional health). We found no association between the care model and the other HRQoL domains. CONCLUSION A comprehensive care model was associated with the probability of achieving remission and LLDAS but had no apparent impact on the patients' HRQoL.
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Affiliation(s)
| | | | - Rocío V Gamboa-Cardenas
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru.,Rheumatology Department, 280155Hospital Guillermo Almenara Irigoyen, La Victoria, Peru
| | | | - Victor Román Pimentel-Quiroz
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru.,Rheumatology Department, 280155Hospital Guillermo Almenara Irigoyen, La Victoria, Peru
| | - Cristina Reategui-Sokolova
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru.,Unidad de Investigación para La Generación y Síntesis de Evidencias en Salud, Universidad San Ignacio de Loyola, Lima, Peru
| | - Mariela Medina
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru
| | - Claudia Elera-Fitzcarrald
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru.,Rheumatology Department, 280155Hospital Guillermo Almenara Irigoyen, La Victoria, Peru
| | - Erika Noriega
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru
| | - Zoila Rodriguez-Bellido
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru.,School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Cesar Pastor-Asurza
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru.,School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Risto Perich-Campos
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru.,School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Graciela S Alarcón
- School of Medicine, the University of Alabama at Birmingham, Birmingham, AL USA.,School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Manuel F Ugarte-Gil
- School of Medicine, 187071Universidad Científica del Sur, Lima, Peru.,Rheumatology Department, 280155Hospital Guillermo Almenara Irigoyen, La Victoria, Peru
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Ugarte-Gil MF, Mendoza-Pinto C, Reátegui-Sokolova C, Pons-Estel GJ, van Vollenhoven RF, Bertsias G, Alarcon GS, Pons-Estel BA. Achieving remission or low disease activity is associated with better outcomes in patients with systemic lupus erythematosus: a systematic literature review. Lupus Sci Med 2021; 8:e000542. [PMID: 34548375 PMCID: PMC8458331 DOI: 10.1136/lupus-2021-000542] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 09/05/2021] [Indexed: 12/27/2022]
Abstract
BACKGROUND Remission and low disease activity (LDA) have been proposed as the treatment goals for patients with systemic lupus erythematosus (SLE). Several definitions for each have been proposed in the literature. OBJECTIVE To assess the impact of remission/LDA according to various definitions on relevant outcomes in patients with SLE. METHODS This systematic literature review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses using PubMed (1946-week 2, April 2021), Cochrane library (1985-week 2, week 2, April 2021) and EMBASE (1974-week 2, April 2021). We included longitudinal and cross-sectional studies in patients with SLE reporting the impact of remission and LDA (regardless their definition) on mortality, damage accrual, flares, health-related quality of life and other outcomes (cardiovascular risk, hospitalisation and direct costs). The quality of evidence was evaluated using the Newcastle-Ottawa Scale. RESULTS We identified 7497 articles; of them, 31 studies met the inclusion criteria and were evaluated. Some articles reported a positive association with survival, although this was not confirmed in all of them. Organ damage accrual was the most frequently reported outcome, and remission and LDA were reported as protective of this outcome (risk measures varying from 0.04 to 0.95 depending on the definition). Similarly, both states were associated with a lower probability of SLE flares, hospitalisations and a better health-related quality of life, in particular the physical domain. CONCLUSION Remission and LDA are associated with improvement in multiple outcomes in patients with SLE, thus reinforcing their relevance in clinical practice. PROSPERO REGISTRATION NUMBER CRD42020162724.
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Affiliation(s)
- Manuel Francisco Ugarte-Gil
- Grupo Peruano de Estudio de Enfermedades Autoinmunes Sistémicas, Universidad Cientifica del Sur, Lima, Peru
- Rheumatology, Hospital Nacional Guillermo Almenara Irigoyen, EsSalud, Lima, Peru
| | - Claudia Mendoza-Pinto
- Systemic Autoimmune Diseases Research Unit, Mexican Institute of Social Security, Puebla, Puebla, Mexico
- Medicine School, Benemerita Universidad Autonoma de Puebla, Puebla, Puebla, Mexico
| | - Cristina Reátegui-Sokolova
- Rheumatology, Hospital Nacional Guillermo Almenara Irigoyen, EsSalud, Lima, Peru
- Universidad San Ignacio de Loyola, Lima, Peru
| | - Guillermo J Pons-Estel
- Centro Regional de Enfermedades Autoinmunes y Reumáticas (GO-CREAR), Rosario, Santa Fe, Argentina
| | - Ronald F van Vollenhoven
- Amsterdam University Medical Centers, Amsterdam, The Netherlands
- Rheumatology, Amsterdam Rheumatology and Immunology Center, Amsterdam, Netherlands
| | | | - Graciela S Alarcon
- School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Bernardo A Pons-Estel
- Centro Regional de Enfermedades Autoinmunes y Reumáticas (GO-CREAR), Rosario, Santa Fe, Argentina
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