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Molecular therapies for systemic lupus erythematosus: clinical trials and future prospects.

ABSTRACT: The prognosis of patients with systemic lupus erythematosus has greatly improved since treatment regimens combining corticosteroids and immunosuppressive medications have been widely adopted in therapeutic strategies given to these patients. Immune suppression is evidently efficient but also leads to higher susceptibility to infectious and malignant diseases. Toxic effects and sometimes unexpectedly dramatic complications of current therapies have been progressively reported. Identifying novel molecular targets therefore remains an important issue in the treatment of lupus. The aim of this review article is to highlight emerging pharmacological options and new therapeutic avenues for lupus with a particular focus on non-antibody molecular strategies.

SUBMITTER: Monneaux F

PROVIDER: S-EPMC2714128 | biostudies-literature | 2009

REPOSITORIES: biostudies-literature

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Molecular therapies for systemic lupus erythematosus: clinical trials and future prospects.

Monneaux Fanny F Muller Sylviane S

Arthritis research & therapy 20090630 3

The prognosis of patients with systemic lupus erythematosus has greatly improved since treatment regimens combining corticosteroids and immunosuppressive medications have been widely adopted in therapeutic strategies given to these patients. Immune suppression is evidently efficient but also leads to higher susceptibility to infectious and malignant diseases. Toxic effects and sometimes unexpectedly dramatic complications of current therapies have been progressively reported. Identifying novel m ...[more]

PMID: 19591653

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Project description:Neuropsychiatric systemic lupus erythematosus (NPSLE) is a generic definition referring to a series of neurological and psychiatric symptoms directly related to systemic lupus erythematosus (SLE). NPSLE includes heterogeneous and rare neuropsychiatric (NP) manifestations involving both the central and peripheral nervous system. Due to the lack of a gold standard, the attribution of NP symptoms to SLE represents a clinical challenge that obligates the strict exclusion of any other potential cause. In the acute setting, management of these patients does not differ from other non-SLE subjects presenting with the same NP manifestation. Afterwards, an individualized therapeutic strategy, depending on the presenting manifestation and severity of symptoms, must be started. Clinical trials in NPSLE are scarce and most of the data are extracted from case series and case reports. High-dose glucocorticoids and intravenous cyclophosphamide remain the cornerstone for patients with severe symptoms that are thought to reflect inflammation or an underlying autoimmune process. Rituximab, intravenous immunoglobulins, or plasmapheresis may be used if response is not achieved. When patients present with mild to moderate NP manifestations, or when maintenance therapy is warranted, azathioprine and mycophenolate may be considered. When symptoms are thought to reflect a thrombotic underlying process, anticoagulation and antiplatelet agents are the mainstay of therapy, especially if antiphospholipid antibodies or antiphospholipid syndrome are present. Recent trials on SLE using new biologicals, based on newly understood SLE mechanisms, have shown promising results. Based on what we currently know about its pathogenesis, it is tempting to speculate how these new therapies may affect the management of NPSLE patients. This article provides a comprehensive and critical review of the literature on the epidemiology, pathophysiology, diagnosis, and management of NPSLE. We describe the most common pharmacological treatments used in NPSLE, based on both a literature search and our expert opinion. The extent to which new drugs in the advanced development of SLE, or the blockade of new targets, may impact future treatment of NPSLE will also be discussed.

Project description:IntroductionFatigue is one of the most important symptoms reported by patients with systemic lupus erythematosus (SLE) and a key concept of interest in SLE clinical trials. Despite this, fatigue remains poorly understood and sub-optimally measured by existing patient-reported outcome (PRO) instruments and scales. Here, we psychometrically evaluated the measurement properties of three PRO scales that purport to measure fatigue, using data from two SLE clinical trials.MethodsData were pooled from two completed phase 3 SLE trials: EMBODY1 (NCT01262365) and EMBODY2 (NCT01261793). FACIT-F, SF-36 Vitality and LupusQoL Fatigue data were selected for post hoc Rasch Measurement Theory psychometric analysis in two stages: (1) scale-to-sample targeting, thresholds for item response options, item fit statistics, and reliability; and (2) proposal and evaluation of pooled fatigue items based on the best-performing items. Responsiveness analyses on group-level (two effect size [ES] calculations and relative efficiency) and individual level (within person statistically significant difference), were conducted to compare original scales and pooled item sets.ResultsScale-to-sample targeting was good for FACIT-F, but suboptimal for SF-36 Vitality and LupusQoL Fatigue. Thresholds for item response options were ordered for all three scales. Item misfit was found in all three scales (FACIT-F 10/13; SF-36 Vitality 4/4; LupusQoL Fatigue 1/4). Reliability statistics were good for FACIT-F (0.93) and LupusQoL Fatigue (0.80) but low for SF-36 Vitality (0.53). The pooled fatigue items improved some psychometric properties despite persisting misfit issues (2/10) and were more sensitive in detecting change at week 24 compared with un-pooled data (ES 0.41 vs. 0.26-0.25).ConclusionsFACIT-F, SF-36 Vitality, and LupusQoL Fatigue were found to have important limitations in the EMBODY1 and EMBODY2 SLE clinical trials. Findings from pooled fatigue items support the need for further research to improve conceptual underpinnings of fatigue PROs and make them fit for purpose for drug development.

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Molecular therapies for systemic lupus erythematosus: clinical trials and future prospects.

Publications

Molecular therapies for systemic lupus erythematosus: clinical trials and future prospects.

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