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Statin-induced lupus: a case/non-case study in a nationwide pharmacovigilance database
1CHU Toulouse, Service de Médecine Interne, Toulouse, F-31059, France. guillaume.moulis@univ-tlse3.fr
Abstract:
Statin use has been advocated to prevent atheromatous complications in lupus patients and may be widely prescribed for these patients in future. Statin-induced lupus has also been described, though the risk is not confirmed. The goal of this study was to detect a safety signal regarding statin-induced lupus. We conducted a case/non-case study in the French PharmacoVigilance Database from January 2000 until December 2010. Cases were drug-induced lupus reports. Non-cases were all reports of other adverse drug reactions (ADRs). Exposure to statins at the time of ADR was screened in each report. Among 235,147 ADR reports, 232 were drug-induced lupus. Exposure to statins was present in 17 (7.3%) cases and in 10,601 (4.7%) non-cases. Reporting odds ratio (ROR) for statin exposure associated with lupus erythematosus was 1.67 (95% confidence interval 1.02-2.74). The ROR was > 1 for each statin but fluvastatin. This pharmacoepidemiological study suggests a link between statin exposure and lupus induction. The benefit-to-risk ratio of statin therapy in lupus patients should be evaluated through randomized controlled trials.
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