ArticleRMD open2024
Immune checkpoint molecules performance in ANCA vasculitis.
Article in RMD open, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Anti-neutrophil cytoplasmic antibody-associated vasculitis: biological insights and biomarker-guided disease management.Nature reviews. Nephrology · 2026Review
- Immature leukocyte and plasma-induced cell death reveal subclinical immune activation in EGPA patients in remission.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2026Article
- Urinary Chemokines in the Diagnosis and Monitoring of Immune Checkpoint Inhibitor-Associated Nephritis.International journal of molecular sciences · 2026Article
- Hypoxia-Associated Molecular Subtypes Reveal Immune Checkpoint, Ferroptosis, and m6A Regulatory Heterogeneity in Pediatric Vasculitis.Human mutation · 2026Article
- Immune checkpoint imbalance in ANCA-associated vasculitis: insights into disease activity and precision immunotherapy.Frontiers in medicine · 2026Review
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe PD-1 axis promotes protection against autoimmunity. Immune checkpoint (IC) molecules performance in anti-neutrophil cytoplasmic antibody-associated vasculitis (AAV) remains unknown. This study aims to assess the IC pathway's role in the AAV's pathophysiology.
methodsWe recruited 88 AAV from our centre as a discovery cohort (acute=42, remission=46) and 30 patients from another institution for external validation (acute=16, remission=14).Serum, urine and peripheral blood mononuclear cells (PBMCs) were collected. In vitro IC molecules production by lymphocytes was studied with and without MPO/PR3 antigen stimulus. Cell culture supernatant (SN) was obtained by centrifugation. PD-1, PD-L1 and PD-L2 concentrations were assessed in serum (s), urine (u) and SN of AAV and healthy controls (HC) using a multiplex assay. PD-1 and PD-L1's expression was analysed in six diagnostic kidney biopsies.
resultsuPD-1 and uPD-L2's concentration was lower in AAV than HC (p<0.0001, p=0.0075). Acute patients exhibited lower uPD-L2 levels compared with those in remission (p=0.036). Similarly, PBMCs showed reduced PD-1 production than HC (stimulated group p=0.04, unstimulated p=0.0074). Furthermore, patients with inflammatory renal lesions had fewer PD-1-positive interstitial cells/staining intensity compared with those with sclerotic lesions. Contradictorily, sPD-1 and sPD-L1's concentration was higher in AAV than HC (p=0.007, p<0.0001) with acute patients exhibiting elevated sPD-1 levels compared with those in remission (p=0.0051). Serum and urine findings were confirmed in the validation cohort.
conclusionsResults in urine, SN and histology suggest IC pathway abolition during acute disease restored in remission and contribute to understand PD-1 axis's role in AAV proposing it as a new biomarker of disease activity.
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