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Kidney Week

Abstract: FR-OR039

Urinary Fetuin-A Predicts Kidney Outcomes and Identifies Residual Risk Across Treatment Arms in the CREDENCE Trial

Session Information

Category: CKD (Non-Dialysis)

  • 2202 CKD (Non-Dialysis): Clinical, Outcomes, and Trials

Authors

  • Tseng, Tzu-Ling, Bio Preventive Medicine, Zhubei City, Taiwan
  • Button, Eric, Precision Diabetes, Raleigh, North Carolina, United States
  • Rossi, Chiara, University of Pisa, Pisa, Italy
  • Raggi, Francesco, University of Pisa, Pisa, Italy
  • Solini, Anna, University of Pisa, Pisa, Italy
  • Huang, Chi-Hsuan, Bio Preventive Medicine, Zhubei City, Taiwan
  • Ferrannini, Ele, University of Pisa, Pisa, Italy
Background

Albuminuria and eGFR incompletely capture risk in diabetic kidney disease (DKD), with substantial heterogeneity in progression. We evaluated whether urinary post-translationally modified fetuin-A (uPTM-FetA; DNlite) predicts renal outcomes independently of standard markers and provides clinically meaningful risk stratification across treatment arms in CREDENCE.

Methods

Baseline uPTM-FetA was measured in 2,429 participants (placebo n=1,466; canagliflozin n=963). The primary endpoint was sustained ≥40% eGFR decline, ESKD, or renal death. Associations were assessed using multivariable Cox models adjusting for UACR, eGFR, age, and LDL-C. Patients were stratified by uPTM-FetA quartiles. Kaplan-Meier analyses evaluated cumulative event risk overall and within each treatment arm.

Results

uPTM-FetA correlated with UACR (ρ=0.49) and eGFR (ρ=-0.22) (p<0.0001). In multivariable analysis, higher uPTM-FetA independently predicted renal outcomes (HR 1.30 [1.12–1.51], p=0.0004), with effect size comparable to established clinical predictors. Risk increased stepwise across quartiles (Q2 HR 1.93, Q3 3.53, Q4 9.33 vs Q1), demonstrating strong risk discrimination.
Within both placebo and canagliflozin arms, uPTM-FetA stratified patients into progressively higher-risk groups (log-rank p<0.0001 for both). Notably, elevated uPTM-FetA identified patients at substantial residual risk despite active treatment, with consistent separation of event curves across treatment arms.

Conclusion

uPTM-FetA is a strong, independent predictor of DKD progression and provides clinically meaningful risk stratification beyond UACR and eGFR. Its ability to identify patients at persistently elevated risk, including those receiving standard-of-care therapy, supports its potential role in risk stratification and therapeutic decision-making in DKD.