Apixaban vs Warfarin in HeartMate 3 LVAD Patients
Official title: The SWITCH Trial: A Randomized Controlled Study of Apixaban Versus Vitamin K Antagonists in Patients With HeartMate 3 Left Ventricular Assist Devices
Run by Columbia University · NCT07471139 · Data updated 2026-11-12
This study tests whether apixaban can replace warfarin to prevent clots and bleeding problems in adults with an implanted HeartMate 3 LVAD for at least 3 months.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 80 Years |
| Sex | All |
| Enrollment | 460 (estimated) |
| Sponsor | Columbia University Academic / other |
| Locations | 1 site (New York, New York) |
| Status | Recruiting |
| Started | October 15, 2026 |
| Main results expected | August 2029 |
| Study ends | October 2029 |
| Registry record updated | November 4, 2026 |
| Trial ID | NCT07471139 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (18+) with a HeartMate 3 LVAD implanted for more than 3 months, currently treated with warfarin, and able to provide informed consent.
✕Probably not a fit
Patients with contraindications to apixaban or those at high risk for complex bleeding may not benefit from this approach.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a Phase 3, randomized, non-inferiority trial comparing apixaban to vitamin K antagonists in adults with a HeartMate 3 LVAD implanted for more than 3 months. The study aims to evaluate safety and efficacy in reducing thrombotic events while limiting bleeding complications. Participants will be assigned to either apixaban or warfarin and followed for a defined period to monitor outcomes related to hemocompatibility-related adverse events. Eligibility includes adults with HM3 LVAD >3 months, currently on warfarin, and willing to provide informed consent. Key exclusion criteria include allergy to apixaban, bridge-to-transplant status, and significant renal dysfunction.
Why it matters
Potential benefit: If successful, patients may experience similar protection against clots with a lower risk of major bleeding compared with warfarin.
How similar studies have gone: Prior small trials and observational data suggested potential bleeding advantages with DOACs like apixaban in LVAD patients, but definitive results require larger Phase 3 testing.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Participants will have HeartMate3 LVAD implanted \> 3 months before enrollment * ≥ 18 years old * Treated with WARFARIN SODIUM * Participant must provide written informed consent prior to any clinical investigation related procedure * In female participants of childbearing capability, not currently pregnant and on appropriate contraception Exclusion Criteria: * Participation in any other clinical investigation(s) involving a Mechanical Circulatory Support (MCS) device, or interventional investigation(s) likely to confound study results or affect study outcome * Presence of other anatomic or comorbid conditions, or other medical, social, or psychological conditions that, in the investigator's opinion, could limit the subject's ability to participate in the clinical investigation or to comply with follow-up requirements, or impact the scientific soundness of the clinical investigation results * Known allergy to Apixaban * Bridge to transplant * Severe renal dysfunction Estimated Glomerular Filtration Rate (eGFR) \<20 * History of major bleeding event with subsequent reduction of INR goal to \< 1.8 * Apixaban dose reduction criteria (Age ≥80 years, weight ≤60 kg, creatinine ≥1.5 mg/dL) * Aortic root thrombus
Where it's running
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Columbia University Irving Medical Center
New York, New York, United States Recruiting
Study contacts
- Principal investigator: Nir Uriel, MD — New York Presbyterian / Columbia University Medical Center
- Study coordinator: Ilan Richter, MD
- Email: ir2498@cumc.columbia.edu
- Phone: 3322098345
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.