Trial reportRMD open2025
Metabolomic profiling of patients with lupus nephritis reveals unique metabolites that are modulated through type I interferon inhibition by anifrolumab treatment in a phase 2 trial.
Trial report in RMD open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02547922 (A Multicentre, Randomised, Double-blind, Placebo-controlled, Phase 2 Study Evaluating the Efficacy and Safety of Anifrolumab in Adult Subjects With Active Proliferative Lupus Nephritis), which is not on this map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Multicentre, Randomised, Double-blind, Placebo-controlled, Phase 2 Study Evaluating the Efficacy and Safety of Anifrolumab in Adult Subjects With Active Proliferative Lupus Nephritis
Who cites it
1 citing paper in PubMed.
- Targeting STAT3 in systemic lupus erythematosus and lupus nephritis: mechanisms, therapeutic advances, and structure-informed perspectives.Frontiers in pharmacology · 2026Review
Corrections and comments
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Authors and funding
19 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivePatients with systemic lupus erythematosus (SLE) commonly develop lupus nephritis (LN), the most frequent severe organ manifestation of this systemic autoimmune disease. Using serum and urine samples from a phase 2 trial in LN, we investigated that how the LN metabolome is modulated in response to type I interferon receptor blockade with anifrolumab, an approved treatment for moderate to severe SLE.
methodsPatients in TULIP-LN (NCT02547922) received standard therapy plus intravenous anifrolumab or placebo. Untargeted metabolomics analysis was performed on serum and urine samples from 128 and 119 patients, respectively. Metabolites impacted by anifrolumab and their associations with clinical, serological and kidney measures of LN disease activity were examined. An in vitro model was used to validate the impact of anifrolumab on metabolite-induced inflammation.
resultsIn serum, indoxyl sulfate (IS) and cytosine were the metabolites most modulated by anifrolumab, while baseline levels correlated with measures of kidney damage. In urine, uracil and cytosine were the most modulated by anifrolumab and levels of these metabolites were associated with serological markers of disease activity. Anifrolumab reduced markers of vascular dysfunction and inflammation upregulated by IS in in vitro models. Baseline urine uracil levels predicted response to anifrolumab intensive regimen at Week 52.
conclusionOur findings establish a connection between type I interferon signalling, pyrimidine metabolism and uremic toxins in patients with LN and support the evaluation of urine uracil as a potential biomarker of response to anifrolumab.
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