A better self-efficacy is predictive of better health-related quality of life (HRQoL) in patients with systemic lupus erythematosus: data from the Almenara Lupus Cohort.

OBJECTIVE: To determine the possible predictive value of self-efficacy on health-related quality of life (HRQoL) in patients with SLE. METHODS: Patients with SLE from the Almenara Lupus Cohort were included. Self-efficacy was ascertained with the six domains from the Patient-Reported Outcomes Measurement Information System (PROMIS) self-efficacy for managing chronic conditions. For PROMIS domains, a score of 50 is the average for a clinical population (people with a chronic condition), a higher score indicates that the respondent has greater self-efficacy. HRQoL was ascertained with the physical and mental component summary (PCS and MCS) measures of the Short-Form 36 (SF-36). Generalised estimating equations were performed, using as outcome the PCS or MCS in the subsequent visit, and the self-efficacy domain in the previous visit; multivariable models were adjusted for possible confounders. The confounders were measured in the same visit as the self-efficacy domain. RESULTS: Two-hundred and nine patients for a total of 564 visits were included; 194 (92.8%) patients were women and mean age at diagnosis was 36.4 (14.0) years. In the multivariable models, a better PCS was predicted by a better self-efficacy for managing symptoms, managing medications and treatments and managing social interactions and general self-efficacy; a better MCS was predicted by a better self-efficacy for managing daily activities, managing symptoms, managing medications and treatments and managing social interactions. CONCLUSION: A better self-efficacy is predictive of subsequent better HRQoL, even after adjustment for possible confounders. These results should encourage clinicians to develop strategies to improve self-efficacy in patients with SLE.

Predictors of Remission and Low Disease Activity in Rheumatoid Arthritis Patients: Results From the Follow-up of a Real-World Peruvian Cohort.

BACKGROUND: Clinical remission is the goal in rheumatoid arthritis (RA) management; however, this can be difficult to achieve in several parts of the world. Our objective was to determine predictors of remission and remission/low disease activity (LDA) in RA. METHODS: A longitudinal real-setting RA cohort was followed up (January 2016-2020). Predictors examined were sex, age at diagnosis, disease duration, socioeconomic status, tobacco use, rheumatoid factor titer, comorbidities (Charlson index), Simple Disease Activity Index (SDAI) score, disability (Multidimensional Disease Health Assessment Questionnaire), health-related quality of life (Short Form-36 questionnaire), glucocorticoid dose, biological/target synthetic disease-modifying antirheumatic drugs, and conventional DMARD (c-DMARD) use. Univariable and multivariable generalized estimating equation models were done to determine predictors of remission (at a given visit) and sustained remission (2 consecutives visits), using the SDAI definition (0 or <3.3). Similarly, remission/LDA (SDAI <11) predictors were examined. RESULTS: Five hundred thirty RA patients included the following: 160 patients (30.2%) achieved remission in at least 1 visit, and 126 patients (23.77%) achieved sustained remission. On the multivariable analysis glucocorticoid dose (odds ratio [OR], 1.060; 95% confidence interval [CI], 1.027-1.094; p = 0.004) and current (OR, 2.293; 95% CI, 1.811-2.903; p < 0.001) or past (OR, 1.383; 95% CI, 1.127-1.698; p = 0.002) use of c-DMARDs predicted remission/LDA in at least 1 visit, whereas the SDAI (OR, 0.951; 95% CI, 0.942-0.959; p < 0.001), Multidimensional Disease Health Assessment Questionnaire (OR, 0.648; 95% CI, 0.549-0.764; p < 0.001), and age at diagnosis (OR, 0.994; 95% CI, 0.990-0.998; p = 0.004) were negative predictors. As to sustained remission/LDA, current (OR, 2.012; 95% CI, 1.458-2.776: p < 0.001) or past (OR, 1.517; 95% CI, 1.155-1.993; p = 0.003) use of c-DMARDs, having a better Short Form-36 questionnaire physical component summary (OR, 1.022; 95% CI, 1.014-1.029; p < 0.001), and older age at diagnosis (OR, 1.013; 95% CI, 1.003-1.022; p = 0.008) predicted it, whereas SDAI (OR, 0.949; 95% CI, 0.933-0.965; p < 0.001) and medium low/low socioeconomic status (OR, 0.674; 95% CI, 0.500-0.909; p = 0.010) were negative predictors. CONCLUSION: During follow-up of this real-world RA cohort, c-DMARD use predicted remission and remission/LDA. In contrast, disease activity was a negative predictor.

Factores asociados a infecciones serias en pacientes hospitalizados con lupus eritematoso sistémico / Factors associated with serious infections in patients hospitalized with systemic lupus erythematosus

RESUMEN Introducción. En pacientes con lupus eritematoso sistémico (LES) existe incremento de infecciones debido a la propia enfermedad, al uso de inmunosupresores y corticoides. Objetivo. Identificar los factores asociados a infecciones serias en pacientes lúpicos en un hospital de referencia nacional. Estudio retrospectivo, analítico, de casos y controles en el Servicio de Reumatología del Hospital Nacional Guillermo Almenara Irigoyen, Lima, Perú. Métodos. Se analizó el registro de pacientes hospitalizados en el periodo de estudio, los casos fueron pacientes en los que se demostró la etiología de la primera infección durante su hospitalización. Los controles fueron pacientes lúpicos hospitalizados sin infecciones en el mismo periodo de estudio. Se analizaron variables asociadas al desarrollo de infecciones. Resultados. 61 pacientes de 390 hospitalizados desarrollaron infecciones durante su hospitalización. 48 desarrollaron 1 solo evento infeccioso (en 40 se demostró etiología). Los casos tuvieron mayor actividad, daño y comorbilidad en comparación con los controles. En el análisis univariado, el salario (p=0,031), el uso de inmunosupresores a la admisión (previo: p=0,004 y actual: p=0,004), el uso de glucocorticoides (<30 días: p=0,015 y >30-360 días: p=0,028), la actividad (p=0,029) y el daño (p=0,026) producido por la enfermedad, y el tiempo de hospitalización (p=0,045) tuvieron asociación estadísticamente significativa. En el análisis multivariado, los días de hospitalización se asociaron al desarrollo de infecciones. Conclusiones. Existió asociación entre días de hospitalización y el desarrollo de infecciones serias en pacientes lúpicos durante el periodo de estudio.

ABSTRACT Introduction. Lupus patients have an increased risk of developing infections due to the disease, use of immunosuppressants and corticosteroids. Objective. To identify the associated factors for serious infections in lupus patients in a national referral hospital. Retrospective, analytical, case-control study in the Rheumatology Service of the Guillermo Almenara Irigoyen National Hospital, Lima, Peru. Methods. The registry of hospitalized patients in the study period was analyzed, the cases were patients in whom the etiology of the first infection developed their hospitalization. Controls were hospitalized lupus patients without infections in the same study period. Variables predisposing to the development of infections were analyzed. Results. 61 patients out of 390 hospitalized developed infections during their hospitalization. 48 developed 1 only infectious event (in 40 an etiology developed). The cases had higher damage, activity and comorbidity compared to the controls. In the univariate analysis, salary (p = 0.031), use of immunosuppressants upon admission (previous: p = 0.004 and current: p = 0.004), use of glucocorticoids (<30 days: p = 0.015 and> 30-360 days: p = 0.028), activity (p = 0.029) and damage (p = 0.026) produced by the disease and length of hospitalization (p = 0.045), had a statistically significant association. In the multivariate analysis, the days of hospitalization were associated with the development of infections. Conclusions. There is an association between days of hospitalization and the development of serious infections in lupus patients in the study period.

Performance of the 2017 American College of Rheumatology/European League Against Rheumatism Provisional Classification Criteria for Antineutrophil Cytoplasmic Antibody-Associated Vasculitis in a Peruvian Tertiary Care Center.

AIM: To validate the new classification criteria for antineutrophil cytoplasmic antibody-associated vasculitis in a real-life Peruvian cohort of antineutrophil cytoplasmic antibody-associated vasculitis patients. METHODS: We reviewed medical records from a Peruvian tertiary care center from January 1990 to December 2019. Antineutrophil cytoplasmic antibody-associated vasculitis was diagnosed based on the 1990 American College of Rheumatology (ACR) criteria, the 2012 Chapel Hill Consensus Conference definitions, the European Medicines Agency (EMEA) algorithm, and the clinical acumen of the treating rheumatologists. We classified all patients using the "former criteria" (the 1990 ACR criteria for granulomatosis with polyangiitis [GPA] and eosinophilic GPA [EGPA] and the 1994 Chapel Hill Consensus Conference definition for microscopic polyangiitis [MPA]), the EMEA algorithm, and the "new criteria" (the 2017 ACR/European League Against Rheumatism Provisional Criteria). The level of agreement (using Cohen κ) was calculated using the clinical diagnosis as the criterion standard. RESULTS: We identified 212 patients, 12 of whom were excluded. One hundred fifty-four (77%) had MPA, 41 (20.5%) GPA, and 5 (2.5%) EGPA. The new criteria performed well for MPA (κ = 0.713) and EGPA (κ = 0.659), whereas the EMEA algorithm performed well for GPA (κ = 0.938). In the overall population, the new criteria showed better agreement (κ = 0.653) than the EMEA algorithm (κ = 0.506) and the former criteria (κ = 0.305). CONCLUSIONS: The 2017 ACR/European League Against Rheumatism Provisional Criteria showed better agreement for the clinical diagnosis of all the patients overall and had the best performance for MPA and EGPA. The EMEA algorithm had the best performance for GPA.

Relationship between care model and disease activity states and health-related quality of life in systemic lupus erythematosus patients.

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.

Health-Related Quality of Life and fatigue are associated with a higher work productivity impairment in systemic lupus erythematosus patients: Data from the Almenara Lupus Cohort.

Objectives: This study aims to determine the factors associated with absenteeism, presenteeism, and overall work impairment in patients with systemic lupus erythematosus (SLE).Methods: A total of 133 consecutive working patients with SLE were assessed between October 2017 and December 2018, using a standardized data collection form. Sociodemographic, disease, and work-related variables were collected. Work productivity and activity impairment (WPAI) was assessed with the respective questionnaire; absenteeism and presenteeism due to overall health and symptoms during the past 7 days were scored. Linear regression models were performed to determine the factors associated with absenteeism, presenteeism, and overall work impairment. Potential factors included were age at diagnosis, gender, socioeconomic status, educational level, SLEDAI, SLICC/ACR damage index (SDI), FACIT-Fatigue, and the domains of the LupusQoLResults: The mean age at diagnosis was 32.2 years (11.8); 121 (91.7%) were female. Nearly all patients were Mestizo. The mean percent of time for absenteeism was 5.0 (12.9), it was 28.5 (26.4) for presenteeism, and it was 31.3 (27.2) for overall work impairment. In the multiple regression analysis, factors associated with absenteeism were disease duration (B = -0.34; SE = 0.12; p = 0.007), pain (B = -0.14; SE = 0.06; p = 0.046), intimate relationship (B = -0.07; SE = 0.03; p = 0.046), and emotional health (B = 0.16; SE = 0.06; p = 0.006); factors associated with presenteeism were physical health (B = -0.43; SE = 0.14; p = 0.002) and FACIT (B = -0.87; SE = 0.30; p = 0.005); and factors associated with overall work impairment were pain (B = -0.40; SE = 0.11; p = 0.001) and FACIT-Fatigue (B = -0.74; SE = 0.28; p = 0.010).Conclusion: A poor HRQoL and higher levels of fatigue were associated with a higher percentage of absenteeism, presenteeism, and overall work impairment in SLE patients.

Demographic and Clinical Features of ANCA-Associated Vasculitides in a Peruvian Tertiary Center.

AIM: The aim of this study was to identify the demographic and clinical features of patients with ANCA-associated vasculitides (AAVs) in a Peruvian tertiary referral hospital. METHODS: Medical records of patients with AAV according to classification criteria or diagnosed by an experienced rheumatologist, and covering the period between January 1990 and December 2019, were reviewed. Granulomatosis with polyangiitis (GPA), microscopic polyangiitis (MPA), eosinophilic granulomatosis with polyangiitis (EGPA), and renal-limited vasculitis (RLV) were included. Demographic factors (age at diagnosis, sex), disease duration, clinical manifestations (per organ involvement), creatinine level at diagnosis (milligram per deciliter), ANCA status, diagnosis, 2009 Five Factor Score, disease categorization, and treatment were recorded. RESULTS: Two hundred twelve patients were included. Their female-to-male ratio was 1.9:1 (139 [65.6%]/73 [34.4%]), and their mean (SD) age at diagnosis was 59.2 (12.5) years. One hundred fifty-eight patients (74.5%) had MPA, 42 (19.8%) GPA, 7 (3.3%) RLV, and 5 (2.4%) EGPA. Neurological, lung, and renal involvements were the most frequently affected systems. Myeloperoxidase preferentially occurred in MPA (82.5%), whereas proteinase 3 did occur in GPA (79.5%). Microscopic polyangiitis patients were older (61.1 [11.5] years). Female sex predominated in MPA and RLV (2.4:1 and 6:1, respectively), but the opposite was the case for EGPA (1:4). Ear-nose-throat and ocular involvement were more frequent in GPA (both p's < 0.001), and neurological and cardiovascular involvement were more frequent in EGPA (p < 0.001 and p = 0.002, respectively). CONCLUSIONS: This is one of the largest series of AAV patients in Latin America. Overall, female sex predominated. Microscopic polyangiitis was the most frequent AAV, and myeloperoxidase-ANCA was the most frequent antibody in Peruvian AAV population.

Survival in ANCA-Associated Vasculitides in a Peruvian Center: 28 Years of Experience.

AIM: The aim of this study was to identify demographic and clinical risk factors for mortality in patients with antineutrophil cytoplasmic antibodies-associated vasculitides (AAVs) in a Peruvian tertiary referral hospital. METHODS: Medical records of patients with AAV according to classification criteria or diagnosed by an experienced rheumatologist, covering the period between January 1990 and December 2018, were reviewed. Granulomatosis with polyangiitis, microscopic polyangiitis, eosinophilic granulomatosis with polyangiitis, and renal-limited vasculitis were included. Potential predictors of mortality were demographic factors, clinical manifestations, antineutrophil cytoplasmic antibodies status, diagnosis, disease categorization, the 2009 Five Factor Score (FFS), and treatment. Cox regression models were used to determine the risk factors for mortality. Univariable and multivariable analyses using a backward selection method were performed. RESULTS: One hundred ninety-six patients were included; female-to-male ratio was 2:1. The median (interquartile range) age at diagnosis and follow-up were 60.0 (51.0-68.0) and 4.8 (1.3-11.6) years, respectively. One hundred forty-eight patients (75.5%) had microscopic polyangiitis, 37 (18.9%) granulomatosis with polyangiitis, 5 (2.6%) eosinophilic granulomatosis with polyangiitis, and 6 (3.0%) renal-limited vasculitis. Overall survival rates at 1, 5, and 10 years were 83.4%, 68.2%, and 51.7%, respectively. Ocular involvement was protective (hazards ratio [HR], 0.36; 95% confidence interval [CI], 0.17-0.74; p = 0.006), whereas renal (HR, 2.09; 95% CI, 1.33-3.28; p = 0.001) and lung involvement (HR, 2.07; 95% CI, 1.31-3.28; p = 0.002) and the 2009 FFSs were predictive of mortality (2009 FFS = 1: HR, 2.46; 95% CI, 1.50-4.04; p < 0.001; 2009 FFS = 2: HR, 3.07; 95% CI, 1.54-6.10; p = 0.001; 2009 FFS = 3: HR, 13.29; 95% CI, 3.69-47.88; p < 0.001). CONCLUSIONS: Ocular involvement was protective, whereas 2009 FFS ≥ 1 and renal and lung involvement were predictive factors of mortality in Peruvian AAV patients.

Evaluation of the LFA-REAL clinician-reported outcome (ClinRO) and patient-reported outcome (PRO): data from the Peruvian Almenara Lupus Cohort.

OBJECTIVE: The Lupus Foundation of America Rapid Evaluation of Activity in Lupus (LFA-REAL) clinician-reported outcome (ClinRO) and the LFA-REAL patient-reported outcome (PRO) were developed in order to capture manifestations of SLE from the perspective of both the clinician and the patient. The aim of this study is to compare the LFA-REAL ClinRO and PRO with other lupus disease activity measures. METHODS: A cross-sectional analysis of patients from a single-centre cohort was performed using Spearman's correlation. Disease activity measures included were LFA-REAL ClinRO (range 0-1400), LFA-REAL PRO (range 0-1200), Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K), clinical SLEDAI-2K and Physician Global Assessment (PGA, range 0-100). RESULTS: Two hundred and twenty-seven patients with SLE were studied. The mean age was 46.3 (SD: 13.8); 212 (93.4%) were female. The mean (SD) LFA-REAL ClinRO was 25.4 (34.7), LFA-REAL PRO was 241.1 (187.6), PGA was 11.9 (15.4), SLEDAI-2K was 2.3 (3.3) and clinical SLEDAI-2K was 1.6 (2.9). The LFA-REAL ClinRO correlated with PGA (r=0.758, p<0.001), SLEDAI-2K (r=0.608, p<0.001) and clinical SLEDAI-2K (r=0.697, p<0.001); the LFA-REAL PRO correlated modestly with PGA (r=0.160, p=0.016), SLEDAI-2K (r=0.121, p=0.069), clinical SLEDAI-2K (r=0.143, p=0.031) and LFA-REAL ClinRO (r=0.161, p=0.015). CONCLUSIONS: The LFA-REAL ClinRO and the LFA-REAL PRO had good and weak correlations, respectively, with several physician-based disease activity measures in a cross-sectional study, suggesting their potential usefulness in establishing disease severity. Longitudinal studies will be required to determine their value in monitoring patients with SLE.

Age at diagnosis and health-related quality of life are associated with fatigue in systemic lupus erythematosus patients: Data from the Almenara Lupus Cohort.

OBJECTIVE: To define the factors associated with fatigue in Mestizo patients with Systemic Lupus Erythematosus (SLE). METHODS: This is a cross-sectional study of SLE patients from a single center cohort. Visits were performed every six months. For these analyses, the first visit between October 2017 and December 2018 was included. Demographic and clinical characteristics as well as treatment were recorded at every visit. Fatigue was ascertained with the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-FT), Health-Related Quality of Life (HRQoL) with the LupusQoL, disease activity with the Systemic Lupus Erythematosus Disease Activity Index -2 K (SLEDAI-2K), and damage with the Systemic Lupus International Collaborating Clinics (SLICC)/American College of Rheumatology damage index (SDI). Prednisone use was recorded as current daily dose. Immunosuppressive drugs and antimalarial use were recorded as current, past or never. Univariable and multivariable analyses were performed using linear regression models. For the multivariable analyses, model selection followed a backward elimination procedure. RESULTS: Two hundred and twenty-six patients were evaluated. The mean (SD) age at diagnosis was 35.6 (13.1) years, 211 (93.4%) were female; and disease duration was 11.0 (7.3) years. The mean SLEDAI and SDI were 2.4 (3.5) and 1.3 (1.5), respectively. The mean FACIT-FT was 33.1 (10.8). On the multivariable analysis, age at diagnosis and some domains of HRQoL (physical health, emotional health and fatigue) remained associated. CONCLUSIONS: Age at diagnosis is negatively associated with fatigue whereas HRQoL domains like physical health, emotional health and fatigue are positively associated with fatigue.

Serum uric acid is associated with damage in patients with systemic lupus erythematosus.

Introduction: Serum uric acid levels have been reported as predictors of cardiovascular, pulmonary, neurological and renal morbidity in patients with SLE. However, their role in cumulative global damage in these patients has not yet been determined. Objective: To determine whether serum uric acid levels are associated with new damage in patients with SLE. Methods: This is a longitudinal study of patients with SLE from the Almenara Lupus Cohort, which began in 2012. At each visit, demographic and clinical characteristics were evaluated, such as activity (Systemic Lupus Erythematosus Disease Activity Index-2K or SLEDAI-2K) and cumulative damage (Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index or SDI). Treatment (glucocorticoids, immunosuppressive drugs and antimalarials) was also recorded. Univariable and multivariable Cox regression models were used to determine the impact of serum uric acid levels on the risk of new damage. Results: We evaluated 237 patients, with a mean age (SD) at diagnosis of 35.9 (13.1) years; 220 patients (92.8%) were women, and the duration of the disease was 7.3 (6.6) years. The mean SLEDAI-2K and SDI scores were 5.1 (4.2) and 0.9 (1.3), respectively. Serum uric acid level was 4.5 (1.4) mg/dL. Follow-up time was 3.1 (1.3) years, and 112 (47.3%) patients accrued damage during follow-up. In univariable and multivariable analyses, serum uric acid levels were associated with new damage (HR=1.141 (95% CI 1.016 to 1.282), p=0.026; HR=1.189 (95% CI 1.025 to 1.378), p=0.022, respectively). Conclusion: Higher serum uric acid levels are associated with global damage in patients with SLE.

Discrepant Perception of Lupus Disease Activity: A Comparison Between Patients' and Physicians' Disease Activity Scores.

OBJECTIVE: The aim of this study was to compare patient and physician (MD) assessment of disease activity in systemic lupus erythematosus patients. METHODS: This cross-sectional study was conducted between August 2016 and December 2017 at 2 Peruvian hospitals. One group assessed disease activity using a visual analog scale (VAS, 0-100 mm) and the other one using a numerical rating scale (NRS, 0-4), before and after their MD's visit. MDs assessed it with the Mexican Systemic Lupus Erythematosus Disease Activity (Mex-SLEDAI) (0-32) and with the SLICC/ACR Damage Index (SDI) for damage. Health-related quality of life was ascertained with the LupusQoL. Visual analog scale and NRS were compared using the Wilcoxon signed-rank test and the correlation between disease activity as assessed by the patient and the Mex-SLEDAI, SDI, and LupusQoL with the Spearman rank correlation. RESULTS: Two hundred forty patients were included; mean (SD) age at diagnosis was 34.9 (12.9) years; most patients were Mestizo. Disease duration was 10.1 (7.0) years. The Mex-SLEDAI was 1.9 (2.7) and the SDI 1.2 (1.5). Disease activity as assessed by the patient, either by VAS or NRS, did not correlate with the Mex-SLEDAI or the SDI. In contrast, patient assessment of disease activity, by VAS or NRS, significantly correlated with several components of the LupusQoL (physical health, pain, planning, emotional health, and fatigue). CONCLUSIONS: Physician's and patient's assessments of disease activity are discrepant; overall, patients score higher than their MDs. Patients score how they perceive the disease is affecting them, rather than disease activity per se. The VAS could be more useful than the NRS as a measurement of disease activity.

Better Health-Related Quality of Life in Systemic Lupus Erythematosus Predicted by Low Disease Activity State/Remission: Data From the Peruvian Almenara Lupus Cohort.

OBJECTIVE: To determine if low disease activity state (LDAS)/remission predicts a better health-related quality of life (HRQoL). METHODS: Patients with systemic lupus erythematosus from a single center and having completed at least 2 visits were included. Visits were performed every 6 months. HRQoL was measured with the LupusQoL questionnaire. The definition of remission included a Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) score of 0, prednisone daily dosage of ≤5 mg/day, and immunosuppressive drugs on maintenance dose. LDAS was defined as a SLEDAI-2K score of ≤4, prednisone daily dosage of ≤7.5 mg/day, and immunosuppressive drugs as maintenance therapy. For these analyses, remission and LDAS were combined as one variable. Generalized estimating equations were calculated, using as the outcome 1 of each of the 8 components of the LupusQoL questionnaire in the subsequent visit and the activity state in the previous visit. Multivariable models were adjusted for possible confounders. RESULTS: A total of 243 patients were included. During the follow-up, 590 visits (61.6%) were categorized as LDAS/remission. LDAS/remission predicted a better HRQoL in the components of physical health (B = 4.17 [95% confidence interval (95% CI) 1.20, 7.14]; P = 0.006), pain (B = 6.47 [95% CI 3.18, 9.76]; P < 0.001), planning (B = 4.97 [95% CI 1.43, 8.52]; P = 0.006), burden to others (B = 4.12 [95% CI 0.24, 8.01]; P = 0.037], emotional health (B = 4.50 [95% CI 1.56, 7.44]; P = 0.003), and fatigue (B = 3.25 [95% CI 0.04, 6.47]; P = 0.048). CONCLUSION: Being in LDAS/remission predicts a better HRQoL, especially in the components of physical health, pain, planning, burden to others, emotional health, and fatigue.

Correction to: Homocysteine levels are independently associated with damage accrual in systemic lupus erythematosus patients from a Latin-American cohort.

The affiliations of Manuel F. Ugarte-Gil, one of the author of the above article has a discrepancy between the online version of the publisher's internet portal ( Springerlink.com ) and the online pdf version.

Homocysteine levels are independently associated with damage accrual in systemic lupus erythematosus patients from a Latin-American cohort.

OBJECTIVE: To determine the impact of homocysteine levels on damage accrual in systemic lupus erythematosus (SLE) patients. METHODS: This longitudinal study was conducted in consecutive patients seen every 6 months at our Rheumatology Department since 2012. Patients with available homocysteine levels and who had at least one subsequent visit were included. Univariable and multivariable Cox regression models were done to determine if homocysteine levels were predictive of damage accrual as per the SLICC Damage Index (SDI). The multivariable model was adjusted for pertinent variables (age at diagnosis, gender, socioeconomic status, disease duration, disease activity (SLEDAI), Framingham score, antimalarial and immunosuppressive drug use, average daily dose, and exposure time to prednisone (PDN)). RESULTS: One hundred forty-five patients were included; their mean (SD) age at diagnosis was 43.70 (12.09) years, 136 (93.8%) were female, and nearly all were Mestizo. At baseline, disease duration was 7.55 (6.73) years; patients were followed for 3.54 (1.27) years. The SLEDAI was 5.60 (4.34), and the SDI 0.97 (1.35). The average daily PDN dose was 7.30 (5.78) mg/day and the time of PDN exposure was 7.36 (6.73) years. Mean homocysteine levels were 10.07 (3.71) µmol/L. The highest tertile of homocysteine levels predicted new damage accrual in the univariable and multivariable models [HR 1.78 (95% CI, 1.042-3.039); p = 0.035 and HR 2.045 (95% CI, 1.077-3.883); p = 0.029, respectively]. Increased levels (> 15 µmol/L) were found in 12 (8.3%) patients; 75 (51.7%) patients increased ≥ 1 SDI point. CONCLUSION: In SLE patients, homocysteine levels predicted damage accrual independently of other well-known risk factors for such occurrence.

Peripheral CD4+CD28null T-cells as predictors of damage in systemic lupus erythematosus patients.

OBJECTIVES: To determine whether the CD4+CD28null T-cells subpopulation predicts the occurrence of damage in SLE. METHODS: This longitudinal study was conducted in consecutive SLE patients seen every six months in our Rheumatology Department since 2012. Patients in whom CD4+CD28null T-cells had been measured and who had at least one subsequent visit were included in the study. Survival analyses (univariable and multivariable Cox-regression models) were performed to determine the risk of overall and domain damage (as per the SLICC Damage Index - SDI) as a function of the frequency of this T-cell subpopulation. The multivariable model was adjusted for pertinent confounders. All analyses were performed using SPSS 21.0. RESULTS: One hundred and nineteen patients were evaluated; their mean (SD) age was 43.5 (11.9) years, 113 (95.0%) were female. Disease duration was 7.8 (7.0) years, the SLEDAI 5.3 (4.1) and the SDI 1.0 (1.4). The percentage of CD4+CD28null T-cells was 17.4 (14.0). The mean follow-up was 2.1 (0.8) years, and the mean number of visits per patient 3.5 (1.1). Forty-six (38.7%) patients increase at least one SDI point. In the univariable and multivariable analyses, the percentage of CD4+CD28null predicted the occurrence of lung damage [HR: 1.042 (CI95%: 1.001-1.085); p=0.047 and HR: 1.099 (CI95%1.020-1.184); p=0.013, respectively] but neither the total SDI score nor all other SDI domain scores were predicted by the percentage of CD4+CD28null cells. CONCLUSIONS: In SLE patients, CD4+CD28null T-cells predict the occurrence of new lung damage, independently of other risk factors but not of overall damage or damage on other domains.

Factors associated with health-related quality of life in Peruvian patients with systemic lupus erythematosus.

Objective In this paper, we aim to define factors associated with health-related quality of life (HRQoL) in Mestizo patients with systemic lupus erythematosus (SLE). Methods We evaluated patients with SLE from Peru's two largest hospitals between October 2012 and July 2015 to ascertain HRQoL. Using a standard protocol, we incorporated demographic characteristics, clinical manifestations and treatment in our analysis. HRQoL was measured with the LupusQoL, disease activity was ascertained with the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI), and damage was appraised with the Systemic Lupus International Collaborating Clinics (SLICC)/American College of Rheumatology (ACR) damage index (SDI). The associations between the LupusQoL and these variables were examined using linear regression models. Model selection was based on backward elimination. Results A total of 277 patients fit the inclusion criterion. Of these, 254 (91.7%) were female, the median (interquartile range, IQR) age at diagnosis was 41.5 (33.8-51.8) years, disease duration was 6.5 (2.7-11.3) years. The HRQoL domains most affected were the following: burden to others, fatigue, and intimate relationships. Through multivariate analysis, we determined that older age at diagnosis, higher disease activity, damage, and immunosuppressive drug use were negatively associated with HRQoL. Further, we found that higher socioeconomic status, disease duration, and antimalarial use were positively associated with HRQoL. Conclusion Age at diagnosis, disease activity, damage, and use of immunosuppressive drugs were negatively associated with HRQoL; high socioeconomic status, disease duration, and use of antimalarials were positively associated with HRQoL.

Serum uric acid levels contribute to new renal damage in systemic lupus erythematosus patients.

This study aims to determine whether uric acid levels contribute to new renal damage in systemic lupus erythematosus (SLE) patients. This prospective study was conducted in consecutive patients seen since 2012. Patients had a baseline visit and follow-up visits every 6 months. Patients with ≥2 visits were included; those with end-stage renal disease (regardless of dialysis or transplantation) were excluded. Renal damage was ascertained using the SLICC/ACR damage index (SDI). Univariable and multivariable Cox-regression models were performed to determine the risk of new renal damage. Uric acid was included as a continuous and dichotomous (per receiving operating characteristic curve) variable. Multivariable models were adjusted for age at diagnosis, disease duration, socioeconomic status, SLEDAI, SDI, serum creatinine, baseline use of prednisone, antimalarials, and immunosuppressive drugs. One hundred and eighty-six patients were evaluated; their mean (SD) age at diagnosis was 36.8 (13.7) years; nearly all patients were mestizo. Disease duration was 7.7 (6.8) years. Follow-up time was 2.3 (1.1) years. The SLEDAI was 5.2 (4.3) and the SDI 0.8 (1.1). Uric acid levels were 4.5 (1.3) mg/dl. During follow-up, 16 (8.6%) patients developed at least one new point in the renal domain of the SDI. In multivariable analyses, uric acid levels (continuous and dichotomous) at baseline predicted the development of new renal damage (HR 3.21 (1.39-7.42), p 0.006; HR 18.28 (2.80-119.48), p 0.002; respectively). Higher uric acid levels contribute to the development of new renal damage in SLE patients independent of other well-known risk factors for such occurrence.

Circulating naive and memory CD4+ T cells and metabolic syndrome in patients with systemic lupus erythematosus: data from a primarily Mestizo population.

OBJECTIVE: The aim of this study was to determine whether the proportions of naive and memory CD4(+) T cell are independently associated with the metabolic syndrome (MetS) in patients with SLE. METHODS: This cross-sectional study was conducted in SLE patients seen at our rheumatology department between September 2013 and April 2014. CD4(+) T cell subpopulations were examined by flow cytometry. The association of MetS and CD4(+) T cell subpopulations was examined by Mann-Whitney U-test and by multivariable analysis, adjusting for all possible confounding variables. RESULTS: One hundred and seventeen patients were evaluated. Their mean age was 44.6 years (S.D. 12.6), 109 (93.2%) were female and all patients were Mestizo (mixed Caucasian and Amerindian ancestry). Fifty-two patients (44.4%) presented with MetS. Disease duration was 7.6 years (S.D. 6.8). The percentage of naive CD4(+) T cells was 25.0 (S.D. 12.7) and memory CD4(+) T cells was 66.7 (S.D. 13.2) and the memory:naive CD4(+) T cell ratio was 4.3 (S.D. 5.6). In multivariable analysis, the percentage of naive CD4(+) T cells was negatively associated with the presence of MetS [odds ratio (OR) 0.959 (95% CI 0.923, 0.997), P = 0.033], whereas the percentage of memory CD4(+)T cells and the memory:naive CD4(+) T cell ratio were positively associated with its presence [OR 1.040 (95% CI 1.003, 1.078), P = 0.031 and OR 1.238 (95% CI 1.041, 1.472), P = 0.016, respectively]. CONCLUSION: In the SLE patients studied, a lower percentage of naive CD4(+) T cells, a higher percentage of memory CD4(+) T cells and the memory:naive CD4(+) T cell ratio were independently associated with the presence of MetS. This association could reflect the impact of immunosenescence among SLE patients with cardiovascular morbidity.