ArticleKidney international reports2026
Urinary CXCL9 Across the Spectrum of Kidney Allograft Inflammation.
Article in Kidney international reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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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.
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25 authors.
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Abstract
Background: Kidney allograft inflammation spans a heterogeneous spectrum of phenotypes defined by the Banff 2022 classification. We assessed whether urinary C-X-C motif chemokine ligand 9 (uCXCL9) normalized to creatinine (uCXCL9:Cr) captures inflammatory burden across this spectrum and provides incremental diagnostic utility beyond standard variables. Methods: We analyzed 3181 biopsy-urine pairs from a development cohort (1341 biopsies from 921 patients) and an independent external validation cohort (1840 biopsies from 917 patients). Associations with Banff 2022 diagnostic categories were evaluated using multinomial logistic regression with stability-based selection. Incremental performance was assessed using the Hand & Till multiclass area under the curve (AUC) and decision curve analysis. Results: uCXCL9:Cr demonstrated a graded increase across the inflammatory spectrum, with lowest levels in biopsies without specific lesions (median 4.55 ng/mmol), intermediate levels in antibody-mediated phenotypes (15.14), higher levels in acute T cell-mediated rejection (TCMR; 46.11), and the highest levels in mixed inflammatory patterns (53.18-134.05; Conclusion: uCXCL9 reflects active kidney-graft inflammation across modern Banff phenotypes and provides clinically meaningful diagnostic information beyond standard variables, supporting its potential to inform biopsy decisions and monitoring in kidney transplant recipients, pending prospective validation.
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