NCT03063281

Anti-ficolin-2 Autoantibodies in Lupus Nephritis

Association Between the Presence of Autoantibodies Targeting Ficolin-2 and Active Nephritis in Patients With Systemic Lupus Erythematosus

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 213 (actual)
• Sponsor: University Hospital, Grenoble · Academic / Other
• Sex: All
• Age: 18 Years – 70 Years
• Healthy volunteers: Accepted

Summary

Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by the production of multiple autoantibodies. The prevalence and significance of antibodies against Ficolin-2 have not been yet investigated. The aims of this study were to determine the prevalence of anti-ficolin-2 antibodies among SLE patients and to investigate their potential as diagnostic and/or prognostic biomarkers in SLE. This study is a secondary phase of a serum sample analysis done in early 2015 in order to determine the prevalence of anti-ficolin-2 antibodies among the same cohort as the previously declared study (ClinicalTrials.gov ID: NCT02625831; Unique Protocol ID: 1841851v0). In this retrospective study, clinical data were obtained from medical files and blood samples were selected from preexisting biological collection. SLE patients (n=165) were informed and did not objected, they were matched to healthy controls (n=48). Disease activity was determined according to the SLEDAI score. Anti-ficolin-2 antibodies levels were measured in sera by ELISA and correlated to previously obtained Anti-ficolin-3, Anti-ficolin-2, anti-dsDNA and anti-C1q antibodies levels. The titer of anti-ficolin-2 antibodies was correlated with the SLEDAI score (p\<0.0001). The presence of anti-ficolin-2 antibodies was associated with anti-ficolin-3 antibodies, anti-C1q and anti-dsDNA antibodies. Interestingly, the combination of anti-ficolin-3, anti-ficolin-2 and anti-C1q antibodies demonstrated higher specificity than any other traditional biomarker. These results suggest that anti-ficolin-3 and anti-ficolin-2 antibodies could be useful for the diagnosis of active nephritis in SLE patients.

Detailed description

For this retrospective study, the well written brief summary should be sufficient.

Conditions

• Lupus Erythematosus, Systemic

Interventions

Type	Name	Description
OTHER	BIological analysis	Biological analysis : ficolin-2 et anti-ficolin-2 antibodies

Timeline

• Start date: 2012-11-01
• Primary completion: 2013-05-01
• Completion: 2015-05-01
• First posted: 2017-02-24
• Last updated: 2017-02-24