TRACK
(2026)Objective
To determine whether low-dose rivaroxaban (2.5 mg twice daily) reduces major adverse cardiovascular events (including stroke) compared with placebo in patients with advanced chronic kidney disease (CKD stage 4-5 or dialysis-dependent kidney failure).
Study Summary
• Stroke: 2.6% rivaroxaban vs 2.2% placebo (HR 1.19, 95% CI 0.61-2.31)
• Major bleeding significantly increased: 8.8% vs 6.0% (HR 1.51, 95% CI 1.02-2.22, P=.04)
• Trial stopped early on August 7, 2025 for lack of efficacy and net harm concerns
Intervention
Rivaroxaban 2.5 mg twice daily
Inclusion Criteria
Adults ≥18 years with CKD stage 4-5 (eGFR ≤29 mL/min/1.73 m²) or dialysis-dependent kidney failure, plus ≥1 of: coronary artery disease, nonhemorrhagic nonlacunar stroke, peripheral artery disease, diabetes, or age ≥65 years.
Study Design
Arms: Rivaroxaban 2.5 mg BID vs matching placebo (1:1 randomization, double-blind)
Patients per Arm: 727 rivaroxaban, 731 placebo (total 1458)
Outcome
• All-cause mortality: 25.6% vs 23.0% (HR 1.14)
• Cardiovascular death: 15.4% vs 13.3% (HR 1.18)
• Venous thromboembolism significantly lower: 0.6% vs 1.9% (HR 0.29, 95% CI 0.09-0.87)
• Major bleeding significantly higher: 5.1 vs 3.4 per 100 py (HR 1.51, P=.04)
Clinical Question
In patients with advanced CKD (stage 4-5 or dialysis) at high cardiovascular risk, does low-dose rivaroxaban (2.5 mg BID) reduce major adverse cardiovascular events compared with placebo?
Bottom Line
In patients with advanced CKD at high cardiovascular risk, low-dose rivaroxaban did NOT reduce the composite of cardiovascular death, MI, stroke, or PAD events, but significantly increased major bleeding (HR 1.51).
Major Points
- Investigator-initiated, double-blind RCT at 90 centers in 12 countries; 1458 patients randomized (727 rivaroxaban vs 731 placebo).
- Trial stopped early on August 7, 2025 by DSMB due to lack of efficacy and net harm concerns (conditional power only 16% for HR 0.78).
- Primary composite outcome (CV death, nonfatal MI, stroke, or nonfatal PAD event) occurred in 22.6% vs 20.7% (HR 1.09, 95% CI 0.87-1.36, P=.46) — no benefit.
- Major bleeding significantly increased: 8.8% vs 6.0% (HR 1.51, 95% CI 1.02-2.22, P=.04); intracranial bleeding 6 vs 3.
- VTE significantly reduced with rivaroxaban: 0.6% vs 1.9% (HR 0.29, 95% CI 0.09-0.87).
- Bleeding risk was even higher in patients ≥65 years (interaction P=.03).
- Findings contrast with COMPASS/VOYAGER PAD — antithrombotic decisions in advanced CKD should not be extrapolated from other CV populations.
Study Design
- Study Type
- Randomized Controlled Trial
- Randomization
- Yes
- Blinding
- Double-blind, placebo-controlled
- Sample Size
- 1458
- Follow-up
- Median 1.7 years (IQR 0.9-2.8)
- Centers
- 90
- Countries
- Australia, Belgium, Canada, France, Germany, India, Malaysia, Nepal, Saudi Arabia, Singapore, Taiwan, Tunisia
Primary Outcome
Definition: Composite of cardiovascular death, nonfatal myocardial infarction, nonfatal stroke, or nonfatal peripheral artery disease event
| Control | Intervention | HR/OR | P-value |
|---|---|---|---|
| 20.7% (151/731); 11.8 per 100 py | 22.6% (164/727); 13.0 per 100 py | 1.09 (0.87-1.36) | 0.46 |
Limitations & Criticisms
- Trial stopped early for futility/net harm at 49.3% of expected events — treatment effect estimates are less precise and inferences should be interpreted cautiously.
- High rate of permanent study drug discontinuation (~28% in both groups) may have reduced power to detect a treatment benefit.
- Rivaroxaban was tested alone, not combined with aspirin (unlike COMPASS/VOYAGER PAD), which may partly explain the null result.
- About half of participants had no established cardiovascular disease (enrolled based on diabetes or age ≥65 alone), diluting a potential effect.
- No participants from the US and no participants identifying as Black were enrolled — limits generalizability.
- 42.1% of all deaths were sudden cardiac deaths, which may not be modifiable by antithrombotic therapy.
- Minor bleeding data were not collected; formal adherence assessment limited by COVID-19 pandemic.
Citation
JAMA. 2026;336(4):296-305. doi:10.1001/jama.2026.9379