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Ondansetron for the Management of Atrial Fibrillation
NCT05844501 · View on ClinicalTrials.gov ↗
Study Summary
"Afib" is a common irregular heartbeat. Afib can cause stroke, blood clots, dementia and death. Medicines used to treat Afib often do not work well and can cause serious side effects. Clinicians need medicines that work better for Afib. Medicines for Afib work by blocking a current in the heart called a potassium current. There is a newer potassium current called IKas that can contribute to Afib. A medicine called ondansetron is used to keep people with cancer from getting sick to their stomach and throwing up. The investigators have found that ondansetron blocks IKas, and the investigators think that this means that ondansetron may work well to treat Afib. So, in this study the investigators want to find out if ondansetron can: 1) Reduce the amount of time that people have Afib, and 2) Slow down the heart rate when people have Afib. The investigators will study 80 people who are scheduled to have an AF ablation. Several weeks prior to undergoing the ablation procedure, these AF patients will be assigned by chance (like flipping a coin) to one of two groups: ondansetron 8 mg by mouth twice daily or a sugar pill (placebo), which they will take for 28 days. The people in the study will not know whether they are receiving ondansetron or placebo. The investigators will find out if ondansetron reduces the percentage of time that people are in Afib. Also, the investigators will find out if ondansetron slows the heart rate while people are having Afib. The investigators will compare the people in the study who take ondansetron with the people in the study who take placebo. This research will help the investigators to find out if ondansetron can be used as a medicine for people who have Afib.
Conditions Studied
Interventions
- DRUG Placebo
- DRUG Ondansetron 8mg
Study Locations (3)
Indiana
- Indiana Clinical Research Center — Indianapolis
- Indiana University Health Methodist Hospital — Indianapolis
- Purdue University — Indianapolis
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 80 participants |
| Start Date | 2025-04-22 |
| Est. Completion | 2027-12-31 |
| Phase | Phase 4 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT05844501
The ClinicalTrials.gov registry entry for NCT05844501 describes a study currently listed as recruiting. It is categorized as Phase 4, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 80 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Indiana University, which has 1,026 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Atrial Fibrillation appearing as the primary indexed condition, and to 2 interventions — of which Placebo is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT05844501 reports 3 study locations spanning 1 distinct geographic area — top geographies include Indiana. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT05844501 about?
NCT05844501 is a clinical study titled "Ondansetron for the Management of Atrial Fibrillation". "Afib" is a common irregular heartbeat. Afib can cause stroke, blood clots, dementia and death. Medicines used to treat Afib often do not work well and can cause serious side effects. Clinicians need medicines that work better for Afib. Medicines for Afib work by blocking a current in the heart call...
What is the current status of trial NCT05844501?
This trial is currently recruiting. It is a Phase 4 study. The enrollment target is 80 participants. The study started on 2025-04-22. Estimated completion is 2027-12-31.
What conditions does trial NCT05844501 study?
This clinical trial studies the following conditions: Atrial Fibrillation. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT05844501?
The interventions under investigation include: Placebo (DRUG), Ondansetron 8mg (DRUG). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT05844501?
This trial is sponsored by Indiana University, which has 1,026 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT05844501 being conducted?
This trial has 3 study locations across Indiana. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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