Venous ThromboembolismNCT05966740
A Study in the United Sates That Looks at the Safety and Effectiveness of Pradaxa Pellets in Children Aged 3 Months to Less Than 12 Years Who Need Treatment of a Blood Clot or Who Have Had a Blood Clot and Are at Risk of Developing Another Blood Clot
An observational study of Venous Thromboembolism, run by Boehringer Ingelheim at 10 sites in United States.
Trial summary
The main research question of this study is to obtain further safety and effectiveness data on Pradaxa Pellets in children aged 3 months to less than 12 years in routine clinical practice setting. Read more about this study
- Who is it for?
- Ages 3 months to 12 years
- Conditions the study is for
- Venous Thromboembolism
- Type of treatment
- Pill or oral medicine
- How many people
- 5 participants
- Where
- 10 sitesUnited States
- Study dates
- 19 Apr 2024to 28 Apr 2025
- Phase
- Observational
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 3 months to 12 years
- All sexes
- No healthy volunteers
- Child
Study population: Pediatric patients aged 3 months to less than 12 years, who may be considered for anticoagulation with Pradaxa Pellets due to venous thromboembolic events (VTE), are usually treated in neonatology, pediatric general surgery, cardiac surgery or intensive care units. Pediatric patients with anticoagulation with Pradaxa Pellets for the prevention of recurrent VTE are usually evaluated by pediatric hematologists in pediatric hematology units. Any of these patients that are prescribed Pradaxa pellets may be considered for inclusion into this study.
Who may be able to join
- Pediatric patients aged 3 months to less than 12 years at the time of Pradaxa Pellets initiation
- Written informed consent from parents/care givers and patient assent if age appropriate
- Initiation of Pradaxa Pellets administration either as initial or subsequent therapy:
- Treatment of VTE
- Treatment to reduce the risk of recurrence of VTE
Who cannot join
- Participation in any randomized clinical trial or use of investigational product, participation in any other observational study is not an exclusion
- Any contraindications to Pradaxa Pellets according to the US Prescribing Information.
- Previous participation in this study.
Trial locations and contacts
10 sites in 1 country.
10 sites in 1 country
United States10 sites
Dell Children's Ascension
Austin, Texas, 78723
MUSC (Medical university of South Carolina)
Charleston, South Carolina, 29425
Cincinnati Children's Hospital
Cincinnati, Ohio, 45229
Dayton Children's Hospital
Dayton, Ohio, 45404
Indiana Hemophilia & Thrombrosis Center
Indianapolis, Indiana, 46260
University of California, San Diego
La Jolla, California, 92093
Vanderbilt University
Nashville, Tennessee, 37232
Yale University School of Medicine
New Haven, Connecticut, 06519
Rady Children's Hospital
San Diego, California, 92123
Johns Hopkins All Children's Hospital
St. Petersburg, Florida, 33701
About this study
Official title: Safety and Effectiveness of Pradaxa Oral Pellet Formulation for Treatment of Acute Venous Thromboembolic Events (VTE) and/or for Risk Reduction of Recurrence of VTE in Pediatric Patients Aged 3 Months to Less Than 12 Years in a Real World Setting: a Prospective Non-interventional Study Conducted in the United States
The main research question of this study is to obtain further safety and effectiveness data on Pradaxa Pellets in children aged 3 months to less than 12 years in routine clinical practice setting.
- Conditions
- Venous Thromboembolism
- Medical subject headings
- Venous Thromboembolism
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Pradaxa-treated patients | Pediatric patients with acute venous thromboembolic events (VTE) and/or at risk of recurrent VTE due to the presence of unresolved clinical risk factors received Pradaxa Pellets orally, either according to the prescribing label or off-label. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Cumulative Incidence of Clinically Relevant Bleeding Events
Cumulative incidence of clinically relevant bleeding events was reported as the number of participants with clinically relevant bleeding events, defined as the composite of major bleeding events (MBE) and clinically relevant non-major (CRNM) bleeding events, according to recommendations from international thrombosis and hemostasis committees.
MBE were defined as: fatal bleeding; clinically overt bleeding associated with a decrease in hemoglobin of at least 2 grams/deciliter in a 24-hour period; critical site bleeding; bleeding that required an intervention via invasive procedure; and overt bleeding for which a reversal agent was administered.
CRNM bleeding was defined as: overt bleeding for which a blood product was administered and did not meet the criteria for major bleeding; bleeding that resulted in a medical or procedural intervention not meeting major bleeding criteria, including a medication change; and bleeding that resulted in hospitalization or an increased level of care.
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Secondary outcomes (11)
Occurrence of Recurrent Venous Thromboembolic Event (VTE)
The occurrence of VTE is reported as the number of participants with recurrent VTE including both symptomatic and asymptomatic events. Symptomatic recurrent VTE is defined as radiologically-confirmed new venous thrombotic or embolic burden at least 7 days post-diagnosis of the index VTE, accompanied by signs and/or symptoms attributable to the new thromboembolism. Asymptomatic VTE was defined by new thrombotic/embolic burden as disclosed by comparison of end-of-treatment imaging versus baseline imaging of the vascular region involved by the index VTE.
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Mortality Related to Thrombotic or Thromboembolic Events
Number of participants who died with thrombotic or thromboembolic events.
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Occurrence of All Bleeding Events
The occurrence of all-bleeding events is reported as the number of participants experiencing any of the bleeding event described. All bleeding events were defined as the composite of major bleeding events (MBE), clinically relevant non-major (CRNM) bleeding events and minor bleeding events but not leading to hospitalization, increased level of inpatient care, or an intervention by the medical team.
Minor bleeding events were defined as any overt or macroscopic evidence of bleeding that does not fulfil the criteria for major bleeding, CRNM bleeding, or important bleeding without intervention according to recommendations from international thrombosis and hemostasis committees.
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Occurrence of Post-thrombotic Syndrome (PTS)
Occurrence of post-thrombotic syndrome (PTS) is reported as the number of participants with PTS. The presence of PTS was evaluated by the Villalta Scale Modified for Children, the Manco-Johnson instrument, or other validated pediatric PTS instrument employed in routine clinical care, according to recommendations from international thrombosis and hemostasis committees.
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Incidence of Adverse Events (AEs)
Incidence of adverse events is reported as number of participants with any adverse event (AEs).
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Incidence of Serious Adverse Events (SAEs)
Incidence of serious adverse events is reported as number of participants with serious adverse event (SAEs).
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Thrombotic Burden at the End of Treatment
Number of participants with thrombotic burden at the end of the treatment period compared to baseline was quantified by image-based resolution status of the thrombus at the discretion of the treating physician, based on the type and location of the initial diagnosis of the thromboembolism. When appropriate, the same approach used for the baseline evaluations was utilized.
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Recurrence of Venous Thromboembolic Event (VTE) While on Treatment
Number of participants with new or recurrent VTE occurring at least 7 days after diagnosis of the VTE captured on the baseline VTE form (index VTE).
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Duration of Treatment With Dabigatran Etexilate
The median duration of the dabigatran etexilate (Pradaxa Pellets) treatment is reported.
Measured: From first Pradaxa Pellets exposure until its discontinuation. Up to 370 days.
Compliance With Dabigatran Etexilate Treatment
Number of participants complying with dabigatran etexilate (Pradaxa Pellets) treatment. Compliance was defined as not missing 0-1 treatment dose since the last visit, as evaluated at each time point. Unscheduled follow-up was defined as patient contact in between any scheduled study visit.
Measured: From first Pradaxa Pellets exposure until its discontinuation. At 6-week, 3-months, 6-month, and 12-month follow-up, and at unscheduled follow-up (up to 370 days).
Incidence of Adverse Events Leading to Drug Discontinuation
Incidence of adverse events leading to discontinuation of Pradaxa Pellets is reported as the number of participants.
Measured: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Aug 2023
- Study start19 Apr 2024
- Primary completion28 Apr 2025
- Study completion28 Apr 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Venous ThromboembolismStudies of the same condition, open and under way.
- More trials run by Boehringer IngelheimThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 5 participants (actual)
Sponsor and investigators
- Lead sponsor
- Boehringer Ingelheim
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Children's Hospital Acquired Thrombosis consortium
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05966740
- Sponsor's protocol ID
- 1160-0309
- Status last verified
- May 2026
- First submitted
- 21 Jul 2023
- Last updated
- 2 Jun 2026
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Once the criteria in section "Time Frame" are fulfilled, researchers can use the following link https://www.clinicalstudies.boehringer-ingelheim.com/msw/datasharing to request access to the clinical study documents regarding this study, and upon a signed "Document Sharing Agreement". Furthermore, researchers can request access to the clinical study data, for this and other listed studies, after the submission of a research proposal and according to the terms outlined in the website.
Study at a glance
From the registry record, last updated by the sponsor on 2 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Safety and Effectiveness of Pradaxa Oral Pellet Formulation for Treatment of Acute Venous Thromboembolic Events (VTE) and/or for Risk Reduction of Recurrence of VTE in Pediatric Patients Aged 3 Months to Less Than 12 Years in a Real World Setting: a Prospective Non-interventional Study Conducted in the United States
- ClinicalTrials.gov ID
- NCT05966740
- Acronym / sponsor ID
- 1160-0309
- Conditions
- Venous Thromboembolism
- Study type
- Observational
- Recruitment status
- Terminated
- Enrolment
- 5 participants (actual)
- Lead sponsor
- Boehringer IngelheimIndustry (pharma, biotech, devices)
- Collaborators
- Children's Hospital Acquired Thrombosis consortium
- Study start
- 19 Apr 2024 (actual)
- Primary completion
- 28 Apr 2025 (actual)
- Study completion
- 28 Apr 2025 (actual)
- First posted
- 1 Aug 2023 (actual)
- Results
- Posted 2 Jun 2026
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The main research question of this study is to obtain further safety and effectiveness data on Pradaxa Pellets in children aged 3 months to less than 12 years in routine clinical practice setting.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Pradaxa-treated patients | – | –Pediatric patients with acute venous thromboembolic events (VTE) and/or at risk of recurrent VTE due to the presence of unresolved clinical risk factors received Pradaxa Pellets orally, either according to the prescribing label or off-label. |
Who may qualify
- Ages
- 3 months to 12 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child
- Study population
- Pediatric patients aged 3 months to less than 12 years, who may be considered for anticoagulation with Pradaxa Pellets due to venous thromboembolic events (VTE), are usually treated in neonatology, pediatric general surgery, cardiac surgery or intensive care units. Pediatric patients with anticoagulation with Pradaxa Pellets for the prevention of recurrent VTE are usually evaluated by pediatric hematologists in pediatric hematology units. Any of these patients that are prescribed Pradaxa pellets may be considered for inclusion into this study.
Key inclusion criteria (5 listed)
- Pediatric patients aged 3 months to less than 12 years at the time of Pradaxa Pellets initiation
- Written informed consent from parents/care givers and patient assent if age appropriate
- Initiation of Pradaxa Pellets administration either as initial or subsequent therapy:
Key exclusion criteria (3 listed)
- Participation in any randomized clinical trial or use of investigational product, participation in any other observational study is not an exclusion
- Any contraindications to Pradaxa Pellets according to the US Prescribing Information.
- Previous participation in this study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Cumulative Incidence of Clinically Relevant Bleeding Events
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Cumulative incidence of clinically relevant bleeding events was reported as the number of participants with clinically relevant bleeding events, defined as the composite of major bleeding events (MBE) and clinically relevant non-major (CRNM) bleeding events, according to recommendations from international thrombosis and hemostasis committees. MBE were defined as: fatal bleeding; clinically overt bleeding associated with a decrease in hemoglobin of at least 2 grams/deciliter in a 24-hour period; critical site bleeding; bleeding that required an intervention via invasive procedure; and overt bleeding for which a reversal agent was administered. CRNM bleeding was defined as: overt bleeding for which a blood product was administered and did not meet the criteria for major bleeding; bleeding that resulted in a medical or procedural intervention not meeting major bleeding criteria, including a medication change; and bleeding that resulted in hospitalization or an increased level of care.
11 secondary outcomes
Occurrence of Recurrent Venous Thromboembolic Event (VTE)
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Mortality Related to Thrombotic or Thromboembolic Events
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Occurrence of All Bleeding Events
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Occurrence of Post-thrombotic Syndrome (PTS)
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Incidence of Adverse Events (AEs)
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Incidence of Serious Adverse Events (SAEs)
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Thrombotic Burden at the End of Treatment
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Recurrence of Venous Thromboembolic Event (VTE) While on Treatment
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Duration of Treatment With Dabigatran Etexilate
Time frame: From first Pradaxa Pellets exposure until its discontinuation. Up to 370 days.
Compliance With Dabigatran Etexilate Treatment
Time frame: From first Pradaxa Pellets exposure until its discontinuation. At 6-week, 3-months, 6-month, and 12-month follow-up, and at unscheduled follow-up (up to 370 days).
Incidence of Adverse Events Leading to Drug Discontinuation
Time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Jun 2026.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Related InfoLink provided by the sponsor.
- Individual participant dataSharing planned: Yes. Once the criteria in section "Time Frame" are fulfilled, researchers can use the following link https://www.clinicalstudies.boehringer-ingelheim.com/msw/datasharing to request access to the clinical study documents regarding this study, and upon a signed "Document Sharing Agreement". Furthermore, researchers can request access to the clinical study data, for this and other listed studies, after the submission of a research proposal and according to the terms outlined in the website.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
10 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Venous Thromboembolism, run by Boehringer Ingelheim at 10 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 2 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 10 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 2 Jun 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Cumulative Incidence of Clinically Relevant Bleeding Events (time frame: From first Pradaxa Pellets exposure until its discontinuation plus 3 days of residual effect period, switch to other anticoagulation therapy, or planned observation time, whichever occurred first. Up to 373 days.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Jun 2026.