Biomarkers of Lupus Disease: Serial Biomarker Sampling in Patients With Active Systemic Lupus Erythematosus (SLE)
Summary
Hypothesis: A reason for repeated disappointing outcomes of clinical trials testing targeted immune biologics for lupus may be the heterogeneity of the disease, exacerbated by the variable effects on immune homeostasis of the background medications that must be continued, in most study designs, in these flare-prone patients. Purpose of Study: This study was designed to purposefully study a population equivalent to the placebo group of typical trials in SLE. In Group A patients entered the trial in mild-moderate flare, were treated with depomedrol, and any background immune suppressants withdrawn. Biomarkers at entry on various medications can be compared to biomarkers after steroid efficacy with background immune suppressants withdrawn. Depomedrol usually wears off over one to three months. Patients were closely observed, with serial biomarkers drawn at monthly intervals or immediately at the time of a new flare. Those patients developing new flares donated blood samples, were immediately treated as deemed appropriate, exiting the study. Group A was designed for up to 50 patients and recruited a total of 41. An additional group of 62 SLE patients donated blood once without additional interventions in order to increase the power of exploratory cross-sectional biomarker analysis on different immune suppressants (Group B). A control population of matched, healthy individuals donated blood twice for the same biomarker studies to validate these assays (Group C).
Timeline
- Start
- 2009-05
- Primary completion
- 2012-12
- Completion
- 2012-12
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Background | Methylprednisolone | Other / unclassified | 160 mg | Intramuscular |