Heart FailurePhase 1/2NCT03784963
Efficacy of Omega-3 Fatty Acid Therapy in Preventing Gastrointestinal Bleeding in Patients With CF-LVAD
A Phase 1/2 study testing Omega 3 fatty acids in people with Heart Failure and Gastrointestinal Bleeding, run by University of Chicago at 1 site in United States.
Trial summary
This study evaluates the efficacy of high-dose fish oil in decreasing rates of gastrointestinal bleeding in patients with continuous-flow left ventricular assist devices. Half of the patients without history of bleeding will receive fish oil while the other half will not. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Heart Failure, Gastrointestinal Bleeding
- What is being tested?
- Omega 3 fatty acids
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 35 participants
- Where
- 1 siteUnited States
- Study dates
- 23 Jan 2019to 15 Jul 2020
- Phase
- Phase 1/2
- 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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Subject has signed consent
- Age > 18 years
- Subjects with a CF-LVAD or are scheduled to receive a CF-LVAD implant
Who cannot join
- Psychiatric disorder or disease, irreversible cognitive dysfunction or psychosocial issues that might impair compliance with the study.
- Patients already taking fish oil.
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Chicago Medicine
Chicago, Illinois, 60637
About this study
Official title: Open-Label Prospective Randomized Control Trial to Investigate the Efficacy of Omega-3 Fatty Acid Therapy in Preventing Gastrointestinal Bleeding in Patients With Continuous-Flow Left Ventricular Assist Device
This study evaluates the efficacy of high-dose fish oil in decreasing rates of gastrointestinal bleeding in patients with continuous-flow left ventricular assist devices. Half of the patients without history of bleeding will receive fish oil while the other half will not. Half of the patients with history of bleeding will receive fish oil while the other half will not. Markers of angiogenesis and inflammation, as well as changes in the microbiome will be assessed in each group.
Read the detailed description
A potential mechanism of bleeding in patients with continuous-flow left ventricular assist devices (CF-LVAD) is dysfunctional angiogenesis. Angiogenesis is a complicated process controlled by several markers. Previous studies have shown that elevated Angiopoietin-2 and TNF-alpha are associated with bleeding events in CF-LVAD patients.
Fish oil has anti-inflammatory and potentially anti-angiogenic properties. A retrospective study of CF-LVAD patients on high-dose fish oil showed a marked decrease in gastrointestinal bleeding rates in these patients. Additionally, these patients had lower levels of circulating Angiopoietin-2. Fish oil is known to have an effect on the microbiome, and the aforementioned effects may be seen in changes of the microbiota.
- Conditions
- Heart Failure, Gastrointestinal Bleeding
- Being tested
- Omega 3 fatty acids, Placebo
- Keywords
- Angiogenesis, Inflammation, Microbiome
- Medical subject headings
- Heart Failure, Gastrointestinal Hemorrhage, Inflammation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Omega 3 fatty acidsDrug
Patients will receive 4 grams fish oil once daily
PlaceboOther
Standard of care
| Study group | Role | What they receive |
|---|---|---|
| Primary Prevention Intervention | Experimental | In patients with CF-LVAD who have not had a gastrointestinal bleed, patients randomized to intervention will receive 4 grams of Nature Made Ultra Omega-3 Fish Oil once daily for 1 year along with standard of care. Receives: Drug: Omega 3 fatty acids |
| Primary Prevention Non-Intervention | Placebo comparator | In patients with CF-LVAD who have not had a gastrointestinal bleed, patients randomized to placebo will receive no fish oil and only standard of care. Receives: Other: Placebo |
| Secondary Prevention Intervention | Experimental | In patients with CF-LVAD who have had a gastrointestinal bleed, patients randomized to intervention will receive 4 grams of Nature Made Ultra Omega-3 Fish Oil once daily for 1 year along with standard of care. Receives: Drug: Omega 3 fatty acids |
| Secondary Prevention Non-Intervention | Placebo comparator | In patients with CF-LVAD who have had a gastrointestinal bleed, patients randomized to placebo will receive no fish oil and only standard of care. Receives: Other: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Markers of Angiogenesis - Angiopoietin 1/2 and VEGF
Markers of angiogenesis and inflammation will be measured on customized Luminex assay panels. These will include Angiopoietin-1 (ng/mL), Angiopoietin-2 (ng/mL), and VEGF (ng/mL).
Measured: Markers will be measured at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.
Change in Markers of Angiogenesis - TNF-alpha
Markers of angiogenesis and inflammation will be measured on customized Luminex assay panels. These will include TNF-alpha (pg/mL).
Measured: Markers will be measured at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.
Change in Markers of Inflammation - C-Reactive Protein
Markers of angiogenesis and inflammation will be measured on customized Luminex assay panels. These will include c-reactive protein (mg/dL).
Measured: Markers will be measured at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.
Secondary outcomes (2)
Rates of Gastrointestinal Bleeding
Rates of Gastrointestinal Bleeding will be assessed.
Measured: Rates of bleeding will be measured at 3 months, 6 months, and 12 months after randomization.
Changes in the Microbiome
The microbiome will be assessed using rectal swabs. The swabs will be analyzed to determine the bacterial species present at each time point.
Measured: The microbiome will be assessed at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Dec 2018
- Study start23 Jan 2019
- Primary completion15 Jul 2020
- Study completion15 Jul 2020
Why it stopped: Low enrollment
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 Heart FailureStudies of the same condition, open and under way.
- More trials run by University of ChicagoThe 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
- Interventional
- Phase
- Phase 1/2
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 35 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Chicago
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Ann Nguyen, MD, Principal investigator, University of Chicago
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03784963
- Sponsor's protocol ID
- IRB18-0576
- Status last verified
- Jun 2021
- First submitted
- 3 Dec 2018
- Last updated
- 13 Jul 2021
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Jul 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Open-Label Prospective Randomized Control Trial to Investigate the Efficacy of Omega-3 Fatty Acid Therapy in Preventing Gastrointestinal Bleeding in Patients With Continuous-Flow Left Ventricular Assist Device
- ClinicalTrials.gov ID
- NCT03784963
- Acronym / sponsor ID
- IRB18-0576
- Conditions
- Heart Failure, Gastrointestinal Bleeding
- Keywords
- Angiogenesis, Inflammation, Microbiome
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Low enrollment
- Enrolment
- 35 participants (actual)
- Lead sponsor
- University of ChicagoUniversity, hospital or other
- Study start
- 23 Jan 2019 (actual)
- Primary completion
- 15 Jul 2020 (actual)
- Study completion
- 15 Jul 2020 (actual)
- First posted
- 24 Dec 2018 (actual)
- Results
- Posted 13 Jul 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study evaluates the efficacy of high-dose fish oil in decreasing rates of gastrointestinal bleeding in patients with continuous-flow left ventricular assist devices. Half of the patients without history of bleeding will receive fish oil while the other half will not. Half of the patients with history of bleeding will receive fish oil while the other half will not. Markers of angiogenesis and inflammation, as well as changes in the microbiome will be assessed in each group.
Detailed description
A potential mechanism of bleeding in patients with continuous-flow left ventricular assist devices (CF-LVAD) is dysfunctional angiogenesis. Angiogenesis is a complicated process controlled by several markers. Previous studies have shown that elevated Angiopoietin-2 and TNF-alpha are associated with bleeding events in CF-LVAD patients.
Fish oil has anti-inflammatory and potentially anti-angiogenic properties. A retrospective study of CF-LVAD patients on high-dose fish oil showed a marked decrease in gastrointestinal bleeding rates in these patients. Additionally, these patients had lower levels of circulating Angiopoietin-2. Fish oil is known to have an effect on the microbiome, and the aforementioned effects may be seen in changes of the microbiota.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Primary Prevention Intervention | Experimental | Drug: Omega 3 fatty acidsIn patients with CF-LVAD who have not had a gastrointestinal bleed, patients randomized to intervention will receive 4 grams of Nature Made Ultra Omega-3 Fish Oil once daily for 1 year along with standard of care. |
| Primary Prevention Non-Intervention | Placebo comparator | Other: PlaceboIn patients with CF-LVAD who have not had a gastrointestinal bleed, patients randomized to placebo will receive no fish oil and only standard of care. |
| Secondary Prevention Intervention | Experimental | Drug: Omega 3 fatty acidsIn patients with CF-LVAD who have had a gastrointestinal bleed, patients randomized to intervention will receive 4 grams of Nature Made Ultra Omega-3 Fish Oil once daily for 1 year along with standard of care. |
| Secondary Prevention Non-Intervention | Placebo comparator | Other: PlaceboIn patients with CF-LVAD who have had a gastrointestinal bleed, patients randomized to placebo will receive no fish oil and only standard of care. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Subject has signed consent
- Age > 18 years
- Subjects with a CF-LVAD or are scheduled to receive a CF-LVAD implant
Key exclusion criteria (2 listed)
- Psychiatric disorder or disease, irreversible cognitive dysfunction or psychosocial issues that might impair compliance with the study.
- Patients already taking fish oil.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Omega 3 fatty acidsPatients will receive 4 grams fish oil once daily | Drug | Primary Prevention Intervention, Secondary Prevention Intervention |
| PlaceboStandard of care | Other | Primary Prevention Non-Intervention, Secondary Prevention Non-Intervention |
Primary outcome
Change in Markers of Angiogenesis - Angiopoietin 1/2 and VEGF
Time frame: Markers will be measured at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.
Markers of angiogenesis and inflammation will be measured on customized Luminex assay panels. These will include Angiopoietin-1 (ng/mL), Angiopoietin-2 (ng/mL), and VEGF (ng/mL).
Change in Markers of Angiogenesis - TNF-alpha
Time frame: Markers will be measured at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.
Markers of angiogenesis and inflammation will be measured on customized Luminex assay panels. These will include TNF-alpha (pg/mL).
Change in Markers of Inflammation - C-Reactive Protein
Time frame: Markers will be measured at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.
Markers of angiogenesis and inflammation will be measured on customized Luminex assay panels. These will include c-reactive protein (mg/dL).
2 secondary outcomes
Rates of Gastrointestinal Bleeding
Time frame: Rates of bleeding will be measured at 3 months, 6 months, and 12 months after randomization.
Changes in the Microbiome
Time frame: The microbiome will be assessed at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Jul 2021.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: No
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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.
Ann Nguyen, MD principal investigator
University of Chicago
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing Omega 3 fatty acids in people with Heart Failure and Gastrointestinal Bleeding, run by University of Chicago at 1 site 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 3 inclusion and 2 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 13 Jul 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 13 Jul 2021). 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?
Change in Markers of Angiogenesis - Angiopoietin 1/2 and VEGF (time frame: Markers will be measured at baseline at randomization, and at 3 months, 6 months, and 12 months after randomization.). The study lists 3 primary outcomes in all. 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 13 Jul 2021.