Measuring Disease Activity and Damage with Validated Metrics: A Systematic Review on Mortality and Damage in Systemic Lupus Erythematosus

The Lupus Foundation of America-Rapid Evaluation of Activity in Lupus Clinician-Reported Outcome Predicts Damage in Patients With Systemic Lupus Erythematosus. Data From the Almenara Lupus Cohort

OBJECTIVE

To evaluate the predictive value of the LFA-REAL ClinRO (Lupus Foundation of America Rapid Evaluation of Activity in Lupus clinician-reported outcome) on damage accrual in systemic lupus erythematosus patients.

METHODS

Data from a prevalent lupus cohort were used. The LFA-REAL ClinRO includes 9 domains: mucocutaneous (global and 3 subdomains), musculoskeletal (global and 2 subdomains), cardiorespiratory, neuropsychiatric, renal, hematological, constitutional, vasculitis, and other (it allows for other or rare manifestations). For each domain, a 0- to 100-mm visual analog scale is used, and global domains are included except for the mucocutaneous and musculoskeletal domains where the subdomains are included; it allows for 3 manifestations under "other," so the score ranges from 0 to 1400 (sum of 14 in the visual analog scale). Damage was assessed with the Systemic Lupus International Collaborating Clinics/American College of Rheumatology damage index. Generalized estimating equations were performed, being the outcome the increase in the Systemic Lupus International Collaborating Clinics/American College of Rheumatology damage index; confounders from the previous visit were included; adjusted multivariable models were done. Incidence rate ratios per 10-unit increase in the LFA-REAL ClinRO were reported. Similar models were performed to evaluate the impact of the SLEDAI-2K (SLE Disease Activity Index) and physician global assessment on damage to determine which measure would better predict damage accrual.

RESULTS

Three-hundred thirty-one patients and 1425 visits were included, 1.9 (SD 1.2) years of follow-up. Disease duration at baseline was 10.7 (7.4) years. The mean LFA-REAL ClinRO was 18.2 (SD 30.7). During the follow-up visits, 63 (17.9%) patients accrued damage once; 4 (1.1%) accrued damage twice. The LFA-REAL ClinRO was predictive of damage accrual even after adjustment for possible confounders (incidence rate ratio 1.10 (95% confidence interval 1.04-1.16; p < 0.001). Similar results were obtained using the SLEDAI-2K and the physician global assessment.

CONCLUSION

The LFA-REAL ClinRO is predictive of damage accrual, even after adjusting for possible confounders.

Clinical and economic burden of organ damage among patients with systemic lupus erythematosus in a real-world setting in Germany

BACKGROUND

Systemic lupus erythematosus (SLE), a chronic multisystem autoimmune disease, carries high risk of organ damage and burden to healthcare systems. SLE disease modification aims to reduce disease activity with minimal treatment toxicity and preventing or minimizing organ damage development. This real-world study utilizing healthcare administrative claims data assessed organ damage development, associated costs and healthcare resource utilization (HCRU) in patients with SLE in Germany.

METHODS

Claims data from January 1, 2007, to December 31, 2017, were obtained from the Betriebskrankenkassen German Sickness Fund Database. Adults (> 18 years) with a confirmed SLE diagnosis between January 1, 2009, and December 31, 2014, (inclusion period) were included. The index date was calculated based on the first recorded SLE diagnosis during this period. Patients were propensity score-matched (1:3) to a comparator cohort without SLE by age, sex, and comorbidities (Charlson comorbidity index). Organ damage was identified using an algorithm developed based on conditions described in the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SDI), using ICD-10-GM diagnostic codes, healthcare procedures, and/or treatments.

RESULTS

2121 patients with SLE and 6308 comparator patients were included (mean follow-up time: 6.4 years). Organ damage prevalence increased from 60.5% at baseline to 83.0% during 6 years of follow-up in all patients with SLE, while 17.0% of patients with SLE did not develop organ damage. Patients with newly confirmed SLE diagnosis without organ damage at baseline were nearly twice as likely to develop organ damage within 5 years versus the comparator cohort (52.0% vs. 27.0%). Total annual costs per patient-year for patients with SLE with organ damage were more than double those of patients with SLE without organ damage; both the number of inpatient admissions and length of stay were higher.

CONCLUSIONS

The application of a recently developed algorithm allowed us to use claims data to elucidate SLE organ damage, and its associated high clinical and economic burden, in a large, representative sample in Germany. To our knowledge, this is the first European analysis of its kind involving a broad cohort of patients with SLE treated in the routine care setting.

Systemic Lupus Erythematosus: A Review

Importance

Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by inflammation and immune-mediated injury to multiple organ systems, including the mucocutaneous, musculoskeletal, hematologic, and kidney systems. Approximately 3.4 million people worldwide have received a diagnosis of SLE.

Observations

Approximately 90% of people with SLE are female. Although there are no uniformly accepted diagnostic criteria for SLE, the 2019 European Alliance of Associations for Rheumatology (formerly the European League Against Rheumatism)/American College of Rheumatology classification criteria developed for scientific study are an estimated 96.1% sensitive and 93.4% specific for SLE. These classification criteria include both clinical factors, such as fever, cytopenia, rash, arthritis, and proteinuria, which may be indicative of lupus nephritis; and immunologic measures, such as SLE-specific autoantibodies and low complement levels. Approximately 40% of people with SLE develop lupus nephritis, and an estimated 10% of people with lupus nephritis develop end-stage kidney disease after 10 years. The primary goal of treatment is to achieve disease remission or quiescence, defined by minimal symptoms, low levels of autoimmune inflammatory markers, and minimal systemic glucocorticoid requirement while the patient is treated with maintenance doses of immunomodulatory or immunosuppressive medications. Treatment goals include reducing disease exacerbations, hospitalizations, and organ damage due to the disease or treatment toxicity. Hydroxychloroquine is standard of care for SLE and has been associated with a significant reduction in mortality. Treatments in addition to hydroxychloroquine are individualized, with immunosuppressive agents, such as azathioprine, mycophenolate mofetil, and cyclophosphamide, typically used for treating moderate to severe disease. Three SLE medications were recently approved by the Food and Drug Administration: belimumab (for active SLE in 2011 and for lupus nephritis in 2020), voclosporin (for lupus nephritis), and anifrolumab (for active SLE).

Conclusions and Relevance

Systemic lupus erythematosus is associated with immune-mediated damage to multiple organs and increased mortality. Hydroxychloroquine is first-line therapy and reduces disease activity, morbidity, and mortality. When needed, additional immunosuppressive and biologic therapies include azathioprine, mycophenolate mofetil, cyclophosphamide, belimumab, voclosporin, and anifrolumab.

Implementation effect of a hierarchical pharmaceutical service pattern in patients with systemic lupus erythematosus

OBJECTIVES

This study evaluated the effect of implementing a hierarchical pharmaceutical service pattern based on the knowledge-attitude-practice (KAP) intervention theory on patients with systemic lupus erythematosus.

METHODS

Eligible patients were randomly divided into an intervention or control group. Pharmaceutical service classification criteria were formulated and used to provide patients with differing levels of pharmaceutical services. The classification scores and KAP levels of patients before and at various time points after the intervention were analyzed. The rates of acute attacks and adverse reactions, related clinical test indices, and disease activity were evaluated in both groups.

RESULTS

After 9 months of intervention, the proportions of first- and second-level services in the intervention group declined by 14.43% and 3.94%, respectively, compared with the control group, and the rates of acute attacks and adverse reactions declined by 18.26% and 12.43%, respectively. The KAP level, clinical test indices, and disease activity were significantly different between the groups.

CONCLUSION

Providing patients with systemic lupus erythematosus with pertinent hierarchical pharmaceutical services based on the KAP theory was instrumental in changing patients' behavior and contributed to facilitating disease self-management, thus improving the quality of pharmaceutical services.

Physician Global Assessment International Standardisation COnsensus in Systemic Lupus Erythematosus: the PISCOS study

The Physician Global Assessment International Standardisation COnsensus in Systemic Lupus Erythematosus (PISCOS) study aimed to obtain an evidence-based and expert-based consensus standardisation of the Physician Global Assessment (PGA) scoring of disease activity in systemic lupus erythematosus (SLE). An international panel of 79 SLE experts participated in a three-round Delphi consensus process, in which 41 statements related to the PGA in SLE were rated, using a 0 (strongly disagree) to 10 (strongly agree) numerical rating scale. Statements with agreement of 75% or greater were selected and further validated by the expert panel. Consensus was reached on 27 statements, grouped in 14 recommendations, for the use of the PGA in SLE, design of the PGA scale, practical considerations for PGA scoring, and the relationship between PGA values and levels of disease activity. Among these recommendations, the expert panel agreed that the PGA should consist of a 0-3 visual analogue scale for measuring disease activity in patients with SLE in the preceding month. The PGA is intended to rate the overall disease activity, taking into account the severity of active manifestations and clinical laboratory results, but excluding organ damage, serology, and subjective findings unrelated to disease activity. The PGA scale ranges from "no disease activity" (0) to the "most severe disease activity" (3) and incorporates the values 1 and 2 as inner markers to categorise disease activity as mild (≥0·5 to 1), moderate (>1 and ≤2) and severe (>2 to 3). Only experienced physicians can rate the PGA, and it should be preferably scored by the same rater at each visit. The PISCOS results will allow for increased homogeneity and reliability of PGA ratings in routine clinical practice, definitions of remission and low disease activity, and future SLE trials.

Predictors of treatment response in a lupus nephritis population: lessons from the Aspreva Lupus Management Study (ALMS) trial

OBJECTIVES

To identify predictors of overall lupus and lupus nephritis (LN) responses in patients with LN.

METHODS

Data from the Aspreva Lupus Management Study (ALMS) trial cohort was used to identify baseline predictors of response at 6 months. Endpoints were major clinical response (MCR), improvement, complete renal response (CRR) and partial renal response (PRR). Univariate and multivariate logistic regressions with least absolute shrinkage and selection operator (LASSO) and cross-validation in randomly split samples were utilised. Predictors were ranked by the percentage of times selected by LASSO and prediction performance was assessed by the area under the receiver operating characteristics (AUROC) curve.

RESULTS

We studied 370 patients in the ALMS induction trial. Improvement at 6 months was associated with older age (OR=1.03 (95% CI: 1.01 to 1.05) per year), normal haemoglobin (1.85 (1.16 to 2.95) vs low haemoglobin), active lupus (British Isles Lupus Assessment Group A or B) in haematological and mucocutaneous domains (0.61 (0.39 to 0.97) and 0.50 (0.31 to 0.81)), baseline damage (SDI>1 vs =0) (0.38 (0.16 to 0.91)) and 24-hour urine protein (0.63 (0.50 to 0.80)). LN duration 2-4 years (0.43 (0.19 to 0.97) vs <1 year) and 24-hour urine protein (0.63 (0.45 to 0.89)) were negative predictors of CRR. LN duration 2-4 years (0.45 (0.24 to 0.83) vs <1 year) negatively predicted PRR. The AUROCs of models for improvement, CRR and PRR were 0.56, 0.55 and 0.51 respectively.

CONCLUSIONS

Baseline variables predicted 6-month outcomes in patients with SLE. While the modest performance of models emphasises the need for new biomarkers to advance this field, the factors identified can help identify those patients who may require novel treatment strategies.

Mortality and disease related comorbidities in systemic lupus erythematosus: Data from an Egyptian cohort

Background

Systemic lupus erythematosus (SLE) is a complex autoimmune disorder with significant disease-related comorbidity and considerably high mortality.

Aim of the work

Explore the survival rates and the spectrum of disease related comorbidities in an Egyptian cohort afflicted by SLE.

Methods

This is a single center observational cohort study performed in one of the leading medical Schools governmental hospitals for teaching and training in the North African region and Middle East sectors Kasr Alainy School of Medicine—Cairo University. Inclusion criteria: the investigators of the research question went for planned review of the medical records of adult SLE patients ≥16 years classified according to American College of Rheumatology (ACR) 1997 SLE classification criteria set forth by Hochberg, 1997 who received longitudinal clinical care during the time period from 1999 to 2019. Exclusion criteria: patients seen only once, other collagen vascular diseases, endocrinal, cardiovascular, or other multisystem disease diagnosed prior to the onset of SLE.

Data analysis

Survival was determined from the time of SLE diagnosis to the last contact or date of death. The cumulative probability of survival was estimated using Kaplan–Meier method. Differences in survival between patient groups were determined using the long-rank test.

Results

The study included records of two hundred and two SLE patients, 184 (91.1%) were females and 18 (8.9%) patients were males. The mean age at the time of diagnosis was 26.71 ± 7.93 years with a mean follow-up between mean: 6.6 ± 4.58 years, 34.15% had damage in at least one of the organ systems by Systemic Lupus International Collaborating Clinics American college of rheumatology damage index SLICC/ACR-DI in the first 6 months. Considering an outcome label of dead or alive at the end of follow-up period, results showed a total of 52 mortalities, 88.5% were females and 11.5% were males, mean age at death onset was 30.9 ± 8.8 years. Results of the Kaplan–Meier survival curve showed an overall cumulative probability of survival at 5, 10, 15, and 20 years after SLE diagnosis was 82.9, 68.8, 51.4, and 20.4%, respectively.

Conclusion

The cumulative probability of survival at 5, 10, 15, and 20 years after SLE diagnosis was 82.9, 68.8, 51.4, and 20.4%, respectively.

Conceptual framework for defining disease modification in systemic lupus erythematosus: a call for formal criteria

Disease modification has become a well-established concept in several therapeutic areas; however, no widely accepted definition of disease modification exists for SLE.

We reviewed established definitions of disease modification in other conditions and identified a meaningful effect on ‘disease manifestations’ (ie, signs, symptoms and patient-reported outcomes) and on ‘disease outcomes’ (eg, long-term remission or progression of damage) as the key principles of disease modification, indicating a positive effect on the natural course of the disease. Based on these findings and the treatment goals and outcome measures for SLE, including lupus nephritis, we suggest a definition of disease modification based on disease activity indices and organ damage outcomes, with the latter as a key anchor. A set of evaluation criteria is also suggested.

Establishing a definition of disease modification in SLE will clarify which treatments can be considered disease modifying, provide an opportunity to harmonise future clinical trial outcomes and enable comparison between therapies, all of which could ultimately help to improve patient outcomes. This publication seeks to catalyse further discussion and provide a framework to develop an accepted definition of disease modification in SLE.

Amount of dissipative energy loss when assessing left ventricular dysfunction in female patients with systemic lupus erythematosus

Systemic lupus erythematosus (SLE) is associated with an increased risk of cardiovascular disease. The purpose of the current study was to explore the amount of energy loss (EL) using vector flow mapping (VFM) in the detection of early stage left ventricular (LV) dysfunction among patients with SLE. Eighty-nine patients with SLE and fifty-six healthy controls were enrolled. SLE patients were further divided into inactive (SLEDAI ≤ 4, n = 43) and active (SLEDAI ≥ 5, n = 46) subgroups. A prosound F75 echocardiography machine was used for echocardiographic examination. Intra-cardiac flow images were analysed by a VFM workstation. Compared with the healthy group, the inactive SLE group had increased diastolic EL values (38.05 mW/m vs. 33.02 mW/m, p = 0.010). However, the systolic EL values were comparable between the inactive SLE group and the control group (26.07mW/m vs 23.15 mW/m, p = 0.105). The active SLE group exhibited significantly higher diastolic (104.13 mW/m vs 33.02 mW/m, p < 0.001) and systolic (48.83 mW/m vs 23.15 mW/m, p < 0.001) EL values than the control group. The most notable correlation was observed between the values of the diastolic EL and SLEDAI in the inactive SLE group (r = 0.633, p < 0.001) and in the active SLE group (r = 0.824, p < 0.001). LV-dissipative EL assessed by using VFM is useful and feasible for estimating lesions of LV systolic and diastolic function in active SLE patients with preserved left ventricular ejection fraction. Increased disease activity may lead to increased risk of LV dysfunction.

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.

Treatment patterns and control of hypertension in systemic lupus erythematosus (SLE): a cross-sectional study

OBJECTIVE

Hypertension (HTN) is common in systemic lupus erythematosus (SLE), representing a key risk factor for cardiovascular and renal disease. We described HTN treatment patterns in SLE, evaluated uncontrolled HTN according to Canadian and American guidelines and identified factors associated with uncontrolled HTN.

METHODS

We performed a cross-sectional study, identifying all McGill Lupus Clinic registry patients with an annual visit between January 2017 and May 2019 who were taking HTN medications. We excluded those taking medications only for another indication (eg, Raynaud's). We determined the frequency of uncontrolled HTN according to Canadian and American College of Cardiology/American Heart Association guidelines. Multivariate logistic regression (adjusted for age, sex and race/ethnicity) evaluated if uncontrolled HTN was more common with high body mass index (BMI), longer SLE duration, high disease activity, renal damage, multiple concomitant antihypertensives, prednisone and non-steroidal anti-inflammatory drugs.

RESULTS

Of 442 patients with SLE, 108 were taking medications to treat HTN, and 38 took multiple medications concurrently. Angiotensin-receptor blockers were most common, followed by calcium channel blockers, diuretics, angiotensin-converting enzyme inhibitors and beta blockers. Among the 108 patients, 39.8% (n=43) had blood pressure (BP) >140/90 mm Hg, while 66.7% (n=72) had BP >130/80 mm Hg. In multivariate analyses, uncontrolled HTN (>130/80 mm Hg) was more likely in Caucasians (OR 2.72, 95% CI 1.12 to 6.78) and patients with higher BMI (OR 1.08, 95% CI 1.00 to 1.19). Patients with renal damage had better HTN control (OR 0.39, 95% CI 0.16 to 0.97). We could not draw definitive conclusions regarding other variables.

CONCLUSION

Caucasians and patients with higher BMI had more uncontrolled HTN. The negative association with renal damage is reassuring, as controlled BP is key for renal protection.

Anifrolumab reduces flare rates in patients with moderate to severe systemic lupus erythematosus

BACKGROUND

Systemic lupus erythematosus (SLE) management objectives include preventing disease flares while minimizing glucocorticoid exposure. Pooled data from the phase 3 TULIP-1 and TULIP-2 trials in patients with moderate to severe SLE were analyzed to determine anifrolumab's effect on flares, including those arising with glucocorticoid taper.

METHODS

TULIP-1 and TULIP-2 were randomized, placebo-controlled, 52-week trials of intravenous anifrolumab (300 mg every 4 weeks for 48 weeks). For patients receiving baseline glucocorticoid ≥10 mg/day, attempted taper to ≤7.5 mg/day prednisone or equivalent from Weeks 8-40 was required and defined as sustained reduction when maintained through Week 52. Flares were defined as ≥1 new BILAG-2004 A or ≥2 new BILAG-2004 B scores versus the previous visit. Flare assessments were compared for patients receiving anifrolumab versus placebo.

RESULTS

Compared with placebo (n = 366), anifrolumab (n = 360) was associated with lower annualized flare rates (rate ratio 0.75, 95% confidence interval [CI] 0.60-0.95), prolonged time to first flare (hazard ratio 0.70, 95% CI 0.55-0.89), and fewer patients with ≥1 flare (difference -9.3%, 95% CI -16.3 to -2.3), as well as flares in organ domains commonly active at baseline (musculoskeletal, mucocutaneous). Fewer BILAG-based Composite Lupus Assessment responders had ≥1 flare with anifrolumab (21.1%, 36/171) versus placebo (30.4%, 34/112). Of patients who achieved sustained glucocorticoid reductions from ≥10 mg/day at baseline, more remained flare free with anifrolumab (40.0%, 76/190) versus placebo (17.3%, 32/185).

CONCLUSIONS

Analyses of pooled TULIP-1 and TULIP-2 data support that anifrolumab reduces flares while permitting glucocorticoid taper in patients with SLE.ClinicalTrials.gov identifiersTULIP-1 NCT02446912 (clinicaltrials.gov/ct2/show/NCT02446912);TULIP-2 NCT02446899 (clinicaltrials.gov/ct2/show/NCT02446899).

Peak strain dispersion within the left ventricle detected by two-dimensional speckle tracking in patients with uncomplicated systemic lupus erythematosus

Systemic lupus erythematosus (SLE) often leads to various cardiovascular diseases. We aimed to investigate the value of peak strain dispersion (PSD) in evaluating left ventricular dysfunction in patients with uncomplicated SLE. Eighty-seven female SLE patients and fifty-nine healthy female controls were recruited. The SLE patients were divided into inactive disease (SLE disease activity index (SLEDAI) ≤ 4; n = 48) and active disease (SLEDAI ≥ 5; n = 39) subgroups. Traditional echocardiography and two-dimensional speckle-tracking echocardiography were performed using a GE VividE9 ultrasound diagnostic system and an advanced quantitative analysis EchoPAC workstation (version 201), respectively. The global longitudinal strain (GLS) in the SLE with SLEDAI ≤ 4 group was comparable to that in the control group (- 19.89% vs - 20.7%; P = 0.061). However, GLS was obviously damaged in the SLE with SLEDAI ≥ 5 group compared with that in the control group (- 19.07% vs - 20.7%; P < 0.001). PSD impairment was observed in the SLE with SLEDAI ≤ 4 group (33.83 ms vs 31.44 ms; P = 0.012) and SLE with SLEDAI ≥ 5 groups (52.31 ms vs 31.44 ms; P < 0.001), but the largest difference was observed in the active disease group. Linear regression analysis showed that PSD was moderately correlated with the SLEDAI (r = 0.535; P < 0.001) in SLE patients with SLEDAI ≤ 4 and showed the best correlation with the SLEDAI (r = 0.646; P < 0.001) in the SLE patients with SLEDAI ≥ 5. A correlation between GLS and the SLEDAI (r = 0.359; P = 0.025) was found in the active disease group but not in the inactive disease group (r = 0.253; P = 0.082). PSD is more comprehensive and accurate for evaluating left ventricular subclinical dysfunction in SLE patients. In inactive SLE patients, PSD is a more sensitive index to evaluate early systolic dysfunction of the left ventricle. GLS may be a more vulnerable indicator of early left ventricular cardiac dysfunction in active SLE patients. Controlling disease activity may reduce the events of cardiac dysfunction.

Influenza infection as a trigger for systemic lupus erythematosus flares resulting in hospitalization

In patients with systemic lupus erythematosus (SLE), there are concerns that infections may increase the risk of flares. We evaluated the association between influenza infection and SLE flares resulting in hospitalization. SLE flares resulting in hospitalization and influenza cases were ascertained from the Korean national healthcare insurance database (2014-2018). We used a self-controlled case series design. We defined the risk interval as the first 7 days after the influenza index date and the control interval was defined as all other times during the observation period of each year. We estimated the incidence rates of SLE flares resulting in hospitalization during the risk interval and control interval and compared them using a Poisson regression model. We identified 1624 influenza infections among the 1455 patients with SLE. Among those, there were 98 flares in 79 patients with SLE. The incidence ratio (IR) for flares during the risk interval as compared with the control interval was 25.75 (95% confidence interval 17.63-37.59). This significantly increased the IRs for flares during the risk interval in both women (IR 27.65) and men (IR 15.30), all age groups (IR 17.00-37.84), with and without immunosuppressive agent (IR 24.29 and 28.45, respectively), and with and without prior respiratory diseases (IR 21.86 and 26.82, respectively). We found significant association between influenza infection and SLE flares resulting in hospitalization. Influenza infection has to be considered as a risk factor for flares in all SLE patients regardless of age, sex, medications, and comorbidities.

Economic Evaluation of Damage Accrual in an International Systemic Lupus Erythematosus Inception Cohort Using a Multistate Model Approach

OBJECTIVE

There is a paucity of data regarding health care costs associated with damage accrual in systemic lupus erythematosus. The present study was undertaken to describe costs associated with damage states across the disease course using multistate modeling.

METHODS

Patients from 33 centers in 11 countries were enrolled in the Systemic Lupus International Collaborating Clinics (SLICC) inception cohort within 15 months of diagnosis. Annual data on demographics, disease activity, damage (SLICC/American College of Rheumatology Damage Index [SDI]), hospitalizations, medications, dialysis, and selected procedures were collected. Ten-year cumulative costs (Canadian dollars) were estimated by multiplying annual costs associated with each SDI state by the expected state duration using a multistate model.

RESULTS

A total of 1,687 patients participated; 88.7% were female, 49.0% were white, mean ± SD age at diagnosis was 34.6 ± 13.3 years, and mean time to follow-up was 8.9 years (range 0.6-18.5 years). Mean annual costs were higher for those with higher SDI scores as follows: $22,006 (Canadian) (95% confidence interval [95% CI] $16,662, $27,350) for SDI scores ≥5 versus $1,833 (95% CI $1,134, $2,532) for SDI scores of 0. Similarly, 10-year cumulative costs were higher for those with higher SDI scores at the beginning of the 10-year interval as follows: $189,073 (Canadian) (95% CI $142,318, $235,827) for SDI scores ≥5 versus $21,713 (95% CI $13,639, $29,788) for SDI scores of 0.

CONCLUSION

Patients with the highest SDI scores incur 10-year cumulative costs that are ~9-fold higher than those with the lowest SDI scores. By estimating the damage trajectory and incorporating annual costs, data on damage can be used to estimate future costs, which is critical knowledge for evaluating the cost-effectiveness of novel therapies.

2020 Chinese guidelines for the diagnosis and treatment of systemic lupus erythematosus

Systemic lupus erythematosus (SLE) is a heterogeneous autoimmune disease that represents a prodigious challenge of diagnosis and treatment. In 2019, under the leadership of the Chinese Rheumatology Association, a multidisciplinary guideline development group was established to develop an evidence-based diagnosis and treatment guideline for patients with SLE in PR China. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used to evaluate the quality of evidence and the strength of recommendations. The guideline was reported following the Reporting Items for Practice Guidelines in Healthcare (RIGHT) checklist. In this guideline, we provided recommendations for SLE classification criteria, disease activity monitoring and assessment, medication administration and considerations for SLE patients with organs and systems involved, and management of special populations such as SLE patients in the setting of pregnancy. This guideline serves as an evidence-based tool for Chinese clinicians to diagnose and treat patients with SLE.

Predictors of damage accrual in systemic lupus erythematosus: a longitudinal observational study with focus on neuropsychological factors and anti-neuronal antibodies

OBJECTIVE

Central nervous system disease occurs in over 20% of patients with systemic lupus erythematosus (SLE) resulting in major morbidity and damage. Cognitive dysfunction is common in SLE, but the cause remains uncertain and treatment options are limited. This study explores the influence of clinical, neuropsychological factors and anti-neuronal antibodies on lupus damage accrual.

METHOD

A prospective cohort with 99 SLE patients recruited between 2008 and 2013 and followed up in 2016 was established. Baseline evaluations were depression (MINI-Plus), cognitive function evaluating attention, visuospatial memory and executive functions, and anti-neuronal antibodies. Activity index (SLEDAI-2K) and SLICC/ACR Damage Index (SDI) were assessed at baseline and last follow-up.

RESULTS

At baseline, median (interquartile range) age was 36.0 years (27.0-45.0), disease duration 3.7 years (0.4-12.4), SLEDAI-2K 6.0 (3.0-12.0), and SDI score 1.0 (0-1.0). Major depression was present in 23%, cognitive deficit in 18%, and received immunomodulators in 36%. Anti-dsDNA/N-methyl-D-aspartate receptor antibodies were present in 19%, anti-ribosomal P in 12%, and anti-neuronal surface P antigen (NSPA) in 5%. After a median follow-up of 55 months (interquartile range 39-78), 11% had damage accrual. In a multivariate analysis, baseline SDI, SLEDAI-2K, and immunomodulators use were associated with final damage, whereas SLEDAI-2K and immunomodulator use were also associated with accrual damage. Models including anti-NSPA showed impact on final and accrual damage. Cognitive deficit, depression, and other autoantibodies were not predictors.

CONCLUSIONS

Disease activity and immunomodulator use associate with lupus damage. Of the anti-neuronal antibodies examined, anti-NSPA emerged as a potential poor prognostic factor, probably related to severe SLE onset requiring elevated corticosteroid doses. Key Points • Anti-NSPA may be a worse prognostic factor in SLE. • Other neuropsychological factors do not influence damage.

Canadian Rheumatology Association Recommendations for the Assessment and Monitoring of Systemic Lupus Erythematosus

OBJECTIVE

To develop recommendations for the assessment of people with systemic lupus erythematosus (SLE) in Canada.

METHODS

Recommendations were developed using the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) approach. The Canadian SLE Working Group (panel of Canadian rheumatologists and a patient representative from Canadian Arthritis Patient Alliance) was created. Questions for recommendation development were identified based on the results of a previous survey of SLE practice patterns of members of the Canadian Rheumatology Association. Systematic literature reviews of randomized trials and observational studies were conducted. Evidence to Decision tables were prepared and presented to the panel at 2 face-to-face meetings and online.

RESULTS

There are 15 recommendations for assessing and monitoring SLE, with varying applicability to adult and pediatric patients. Three recommendations focus on diagnosis, disease activity, and damage assessment, suggesting the use of a validated disease activity score per visit and annual damage score. Strong recommendations were made for cardiovascular risk assessment and measuring anti-Ro and anti-La antibodies in the peripartum period and conditional recommendations for osteoporosis and osteonecrosis. Two conditional recommendations were made for peripartum assessments, 1 for cervical cancer screening and 2 for hepatitis B and C screening. A strong recommendation was made for annual influenza vaccination.

CONCLUSION

These are considered the first guidelines using the GRADE method for the monitoring of SLE. Existing evidence is largely of low to moderate quality, resulting in more conditional than strong recommendations. Additional rigorous studies and special attention to pediatric SLE populations and patient preferences are needed.