New study aims to reduce bleeding and clotting risks in cancer surgery patients on blood thinners
NCT ID NCT07372716
First seen Jun 25, 2026 · Last updated Sep 09, 2026 · Updated 3 times
Summary
This study follows 700 cancer patients who take blood thinners and are scheduled for surgery or medical procedures. Researchers will track how often major bleeding or clotting events occur within 30 days after the procedure. The goal is to see if current blood thinner management practices are safe and to improve future care for this high-risk group.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- standardized perioperative anticoagulation management guideline
- What this could lead to
- If successful, this could lead to safer guidelines for managing blood thinners in cancer patients undergoing surgery, reducing bleeding and clotting complications.
- What could go wrong
- This is an observational study, not a treatment trial, so it won't directly benefit participants. Results may not apply to all cancer types or blood thinner regimens.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 700 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2026
- Expected to finish
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Dec 2031
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age ≥ 18 years * Prescribed a Direct Oral Anticoagulant (DOAC), warfarin (International Normalized Ratio (INR) target 2.0-3.0) or Low Molecular Weight Heparin (LMWH) (75-100% weight-based therapeutic dosing) for stroke prevention in Atrial Fibrillation (AF) or the treatment of Venous Thromboembolism (VTE). Eligible DOAC regimens include full-dose (therapeutic) DOAC regimens appropriate for age and renal function. Eligible DOAC regimens include: i. Apixaban 10 mg po BID (VTE) ii. Apixaban 5 mg po BID (AF or VTE) iii. Apixaban 2.5 mg po BID (AF) iv. Rivaroxaban 15 mg po BID (VTE) v. Rivaroxaban 20 mg po OD (AF or VTE) vi. Rivaroxaban 15 mg po OD (AF only) vii. Edoxaban 60 mg po OD (AF or VTE) viii. Edoxaban 30 mg po OD (AF or VTE) ix. Dabigatran 150 mg po BID (AF or VTE) x. Dabigatran 110 mg po BID (AF) * Has active cancer, defined as: i. cancer diagnosed within 6 months ii. recurrent, regionally advanced, or metastatic cancer iii. cancer for which treatment had been administered within 6 months before enrolment iv. hematologic cancer that is not in remission v. Patients who are felt to likely have active cancer based on clinical/imaging characteristics but are awaiting tissue confirmation and are scheduled for a biopsy procedure are eligible for trial inclusion * Is undergoing a planned cancer-related inpatient or outpatient invasive procedure or cancer surgery (to diagnose, treat or palliate cancer; at investigator's discretion) * Interruption of anticoagulation therapy for the planned procedure is required. Exclusion Criteria: * Presence of any mechanical prosthetic heart valve * Known pregnancy or breastfeeding * Severe renal insufficiency (Creatinine Clearance (CrCl) \< 30 mL/min or \< 25 mL/min for Apixaban users) * Condition that might impair adherence to the study protocol (e.g., cognitive impairment, geographic inaccessibility) as determined by the treating physician * Allergy to heparin or a history of (Heparin Induced Thrombocytopenia (HIT) * More than one surgery/procedure planned during the study period * Previous study participation * Inability to provide informed consent
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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The Ottawa Hospital
RECRUITINGOttawa, Canada
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