VenothromboembolismNCT01107327
Fluorodeoxyglucose (FDG)-Positron Emission Tomography (PET) in Cancer Associated Venothromboembolism
An observational study of Venothromboembolism, run by University of Utah at 1 site in United States.
Trial summary
Venothromboembolic disease (VTE), which includes deep venous thrombosis (DVT) and pulmonary embolism (PE), is a severe health problem, effecting 1.5/1000 per year in the general population. In patients over 60 years of age, the incidence is 1/100 per year. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Venothromboembolism
- What is being tested?
- FDG-PET/CT
- Type of treatment
- Surgery or procedure
- How many people
- 26 participants
- Where
- 1 siteUnited States
- Study dates
- Aug 2006to Jan 2012
- Phase
- Observational
- Are there results?
- None posted in the registry
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
Study population: Subjects will be eligible either with provoked or unprovoked DVT.
Who may be able to join
- Inclusion criteria will include documented acute DVT (+/-PE) by Doppler ultrasound or contrast venography.
- Subjects will be eligible either with provoked or unprovoked DVT.
- To meet the inclusion criteria, patients must be enrolled and the initial PET/CT scan performed within 2 weeks of initial onset of symptoms of VTE.
Who cannot join
- Subjects less than 18 years of age,
- Those who are unable to understand and provide signature informed consent
- Pregnant subjects. Any female of childbearing age who has a uterus and functional ovaries will undergo a serum pregnancy test prior to inclusion. 4. Subjects with calf-only blood clot will be excluded, due to the fact that these cases are often complicated by venous stasis disease, post-phlebitic syndrome, and the presence of both acute and chronic clot, which may compromise interpretation.
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Utah Huntsman Cancer Institute
Salt Lake City, Utah, 84112
About this study
Official title: FDG PET in Cancer Associated Venothromboembolism
Venothromboembolic disease (VTE), which includes deep venous thrombosis (DVT) and pulmonary embolism (PE), is a severe health problem, effecting 1.5/1000 per year in the general population. In patients over 60 years of age, the incidence is 1/100 per year. Of the two million Americans per year who will develop VTE, one third will develop pulmonary embolism (PE). VTE is usually diagnosed by Doppler ultrasound or contrast venography when present in the extremities, VQ scan or pulmonary angiography when PE is present. However, there are many instances when the diagnosis of VTE by conventional modalities is limited. These include obesity, recent trauma or surgery, the presence of a mass, the presence of clot around central lines, and clot occurring in the abdomen and pelvis. Furthermore, the differentiation between new and old clot has evaded all diagnostic imaging modalities, and no existing modality allows for an accurate delineation of all sites of thrombus within the body. New approaches to the diagnostic imaging of VTE in complicated cases are needed. The first hypothesis of this project is that FDG PET/CT can be used to accurately diagnose the presence and extent of acute VTE, and that it will distinguish new clot from old.
Approximately 20-25% of all new cases of venous thromboembolism occur in known cancer patients. The risk of VTE is 4-6 fold greater in patients with cancer as those without (8-12% vs. 2%, respectively, lifetime risk). In many cases, the development of VTE occurs as the first clinical sign of the cancer, even before it is diagnosed. Among patients presenting with acute VTE have no obvious cause (defined as "idiopathic" or "unprovoked", as opposed to "secondary" VTE), the literature reports that up to 20% (range of reported incidence 7-20%) may ultimately prove to have cancer, depending on the series and whether the thrombosis is unifocal or multifocal. Despite the substantial prevalence of occult cancer in patients presenting with idiopathic VTE, there are no current recommendations that these patients be screened for the presence of cancer. The second hypothesis of the project is that FDG PET/CT can accurately be used to screen for the presence of cancer in patients with unprovoked (idiopathic) acute VTE.
Read more
Objectives:
There are two specific objectives to test the hypotheses associated with this project:
- To establish the sensitivity of FDG PET/CT in the diagnosis of acute VTE.
- To perform a pilot project to aid in the design of a larger trial to define the incidence of occult cancer in patients rigorously selected for idiopathic (unprovoked) VTE, and to investigate the value of FDG PET in the early detection of occult cancer in this population.
Read the detailed description
Study AIM #1 To establish the sensitivity of FDG PET/CT in the diagnosis of acute VTE.
Rationale: We believe that FDG PET/CT can be used to accurately diagnose the presence, extent, and acuity of VTE. It is unrealistic to assume that FDG-PET could or should become the primary imaging modality for evaluating VTE. The cost, compared to Doppler ultrasound, would be prohibitive, and would involve unnecessary radiation of the patient. We intend to establish the value of FDG PET, instead, as an alternative modality for the diagnosis of VTE. Clinical situations where this might prove useful include: 1) the presence of old clot, when the distinction between new and old may be important; 2) evaluation of abdominal, pelvic and thoracic thrombus, where Doppler is difficult-to-impossible because of patient obesity; 3) Complicated anatomy due to the presence of tumor or post-therapeutic changes.
The sensitivity of FDG PET/CT will be established in patients with acute VTE. The accuracy with which sites of abnormal FDG uptake can be related, spatially, to vascular structures will be critical to the success of this study. There is little doubt that this can better be accomplished with PET/CT than with PET alone. PET/CT will be used for all of these studies. Patients with documented acute VTE, will be enrolled. To determine the utility of FDG PET/CT in distinguishing acute from subacute or chronic clot, and to establish the extent of acute clot, the initial whole body PET/CT scan must be performed within 2 weeks of onset of symptoms of DVT, and subsequent limited region PET/CT scans will be performed at 2-3 weeks and at 6 weeks following the initial PET/CT scan. Whenever possible, subjects will be recruited who have unprovoked VTE because the potential benefit to the patient for participating in this study will be greatest for these patients are at a higher risk for harboring an underlying occult malignancy. However, patients with both provoked and unprovoked VTE will be eligible for enrollment under this specific aim.
- Conditions
- Venothromboembolism
- Being tested
- FDG-PET/CT
- Keywords
- cancer
- Medical subject headings
- Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
FDG-PET/CTProcedure or surgery
Also called PET scan,, PET/CT scan, FDG-PET/CT scan, FDG-PET
The study is focused on two goals, both of which use a new imaging test called PET/CT. PET/CT combines a special radioactive scan with a CT scan. PET/CT is most commonly used in medical practice to evaluate cancer. Abnormal areas such as cancer "light up" on the PET/CT scan. However, many doctors, including us, have noticed that PET/CT also "lights up" in areas of blood clot formation as well. In this study, PET/CT will be used to evaluate the two goals of this project.
What is being measured
The primary outcome is the main question the study is designed to answer.
Accuracy of FDG PET/CT scanning to diagnose presence, extent, and acuity of Ventothromboembolism diagnosis.
We believe that FDG PET/CT can be used to accurately diagnose the presence, extent, and acuity of VTE. We intend to establish the value of FDG PET, instead, as an alternative modality for the diagnosis of VTE. Clinical situations where this might prove useful include: 1) the presence of old clot, when the distinction between new and old may be important; 2) evaluation of abdominal, pelvic and thoracic thrombus, where Doppler is difficult-to-impossible because of patient obesity; 3) Complicated anatomy due to the presence of tumor or post-therapeutic changes.
Measured: April 2012
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Apr 2010 (estimated)
- Study startAug 2006
- Primary completionJan 2012
- Study completionJan 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for VenothromboembolismStudies of the same condition, open and under way.
- More trials run by University of UtahThe 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
- Case only
- Time perspective
- Prospective
- Enrolment
- 26 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Utah
- Sponsor type
- University, hospital or other
- Collaborators
- National Cancer Institute (NCI)
- Responsible party
- Sponsor
- Investigators
- Kathryn Morton, MD, Principal investigator, University of Utah
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01107327
- Sponsor's protocol ID
- HCI18327
- Other IDs
- R01CA121003-01
- Status last verified
- Oct 2014
- First submitted
- 2 Feb 2010
- Last updated
- 31 Oct 2014
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Rondina MT, Lam UT, Pendleton RC, Kraiss LW, Wanner N, Zimmerman GA, Hoffman JM, Hanrahan C, Boucher K, Christian PE, Butterfield RI, Morton KA. (18)F-FDG PET in the evaluation of acuity of deep vein thrombosis. Clin Nucl Med. 2012 Dec;37(12):1139-45. doi: 10.1097/RLU.0b013e3182638934.
PubMed 23154470
Study at a glance
From the registry record, last updated by the sponsor on 31 Oct 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- FDG PET in Cancer Associated Venothromboembolism
- ClinicalTrials.gov ID
- NCT01107327
- Acronym / sponsor ID
- HCI18327
- Conditions
- Venothromboembolism
- Keywords
- cancer
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 26 participants (actual)
- Lead sponsor
- University of UtahUniversity, hospital or other
- Collaborators
- National Cancer Institute (NCI)
- Study start
- Aug 2006
- Primary completion
- Jan 2012 (actual)
- Study completion
- Jan 2012 (actual)
- First posted
- 20 Apr 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Venothromboembolic disease (VTE), which includes deep venous thrombosis (DVT) and pulmonary embolism (PE), is a severe health problem, effecting 1.5/1000 per year in the general population. In patients over 60 years of age, the incidence is 1/100 per year. Of the two million Americans per year who will develop VTE, one third will develop pulmonary embolism (PE). VTE is usually diagnosed by Doppler ultrasound or contrast venography when present in the extremities, VQ scan or pulmonary angiography when PE is present. However, there are many instances when the diagnosis of VTE by conventional modalities is limited. These include obesity, recent trauma or surgery, the presence of a mass, the presence of clot around central lines, and clot occurring in the abdomen and pelvis. Furthermore, the differentiation between new and old clot has evaded all diagnostic imaging modalities, and no existing modality allows for an accurate delineation of all sites of thrombus within the body. New approaches to the diagnostic imaging of VTE in complicated cases are needed. The first hypothesis of this project is that FDG PET/CT can be used to accurately diagnose the presence and extent of acute VTE, and that it will distinguish new clot from old.
Approximately 20-25% of all new cases of venous thromboembolism occur in known cancer patients. The risk of VTE is 4-6 fold greater in patients with cancer as those without (8-12% vs. 2%, respectively, lifetime risk). In many cases, the development of VTE occurs as the first clinical sign of the cancer, even before it is diagnosed. Among patients presenting with acute VTE have no obvious cause (defined as "idiopathic" or "unprovoked", as opposed to "secondary" VTE), the literature reports that up to 20% (range of reported incidence 7-20%) may ultimately prove to have cancer, depending on the series and whether the thrombosis is unifocal or multifocal. Despite the substantial prevalence of occult cancer in patients presenting with idiopathic VTE, there are no current recommendations that these patients be screened for the presence of cancer. The second hypothesis of the project is that FDG PET/CT can accurately be used to screen for the presence of cancer in patients with unprovoked (idiopathic) acute VTE.
Objectives:
There are two specific objectives to test the hypotheses associated with this project:
- To establish the sensitivity of FDG PET/CT in the diagnosis of acute VTE.
- To perform a pilot project to aid in the design of a larger trial to define the incidence of occult cancer in patients rigorously selected for idiopathic (unprovoked) VTE, and to investigate the value of FDG PET in the early detection of occult cancer in this population.
Detailed description
Study AIM #1 To establish the sensitivity of FDG PET/CT in the diagnosis of acute VTE.
Rationale: We believe that FDG PET/CT can be used to accurately diagnose the presence, extent, and acuity of VTE. It is unrealistic to assume that FDG-PET could or should become the primary imaging modality for evaluating VTE. The cost, compared to Doppler ultrasound, would be prohibitive, and would involve unnecessary radiation of the patient. We intend to establish the value of FDG PET, instead, as an alternative modality for the diagnosis of VTE. Clinical situations where this might prove useful include: 1) the presence of old clot, when the distinction between new and old may be important; 2) evaluation of abdominal, pelvic and thoracic thrombus, where Doppler is difficult-to-impossible because of patient obesity; 3) Complicated anatomy due to the presence of tumor or post-therapeutic changes.
The sensitivity of FDG PET/CT will be established in patients with acute VTE. The accuracy with which sites of abnormal FDG uptake can be related, spatially, to vascular structures will be critical to the success of this study. There is little doubt that this can better be accomplished with PET/CT than with PET alone. PET/CT will be used for all of these studies. Patients with documented acute VTE, will be enrolled. To determine the utility of FDG PET/CT in distinguishing acute from subacute or chronic clot, and to establish the extent of acute clot, the initial whole body PET/CT scan must be performed within 2 weeks of onset of symptoms of DVT, and subsequent limited region PET/CT scans will be performed at 2-3 weeks and at 6 weeks following the initial PET/CT scan. Whenever possible, subjects will be recruited who have unprovoked VTE because the potential benefit to the patient for participating in this study will be greatest for these patients are at a higher risk for harboring an underlying occult malignancy. However, patients with both provoked and unprovoked VTE will be eligible for enrollment under this specific aim.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Subjects will be eligible either with provoked or unprovoked DVT.
Key inclusion criteria (3 listed)
- Inclusion criteria will include documented acute DVT (+/-PE) by Doppler ultrasound or contrast venography.
- Subjects will be eligible either with provoked or unprovoked DVT.
- To meet the inclusion criteria, patients must be enrolled and the initial PET/CT scan performed within 2 weeks of initial onset of symptoms of VTE.
Key exclusion criteria (3 listed)
- Subjects less than 18 years of age,
- Those who are unable to understand and provide signature informed consent
- Pregnant subjects. Any female of childbearing age who has a uterus and functional ovaries will undergo a serum pregnancy test prior to inclusion. 4. Subjects with calf-only blood clot will be excluded, due to the fact that these cases are often complicated by venous stasis disease, post-phlebitic syndrome, and the presence of both acute and chronic clot, which may compromise interpretation.
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 |
|---|---|---|
| FDG-PET/CTAlso: PET scan,, PET/CT scan, FDG-PET/CT scan, FDG-PETThe study is focused on two goals, both of which use a new imaging test called PET/CT. PET/CT combines a special radioactive scan with a CT scan. PET/CT is most commonly used in medical practice to evaluate cancer. Abnormal areas such as cancer "light up" on the PET/CT scan. However, many doctors, including us, have noticed that PET/CT also "lights up" in areas of blood clot formation as well. In this study, PET/CT will be used to evaluate the two goals of this project. | Procedure or surgery | – |
Primary outcome
Accuracy of FDG PET/CT scanning to diagnose presence, extent, and acuity of Ventothromboembolism diagnosis.
Time frame: April 2012
We believe that FDG PET/CT can be used to accurately diagnose the presence, extent, and acuity of VTE. We intend to establish the value of FDG PET, instead, as an alternative modality for the diagnosis of VTE. Clinical situations where this might prove useful include: 1) the presence of old clot, when the distinction between new and old may be important; 2) evaluation of abdominal, pelvic and thoracic thrombus, where Doppler is difficult-to-impossible because of patient obesity; 3) Complicated anatomy due to the presence of tumor or post-therapeutic changes.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 31 Oct 2014.
- Derived from this study: PubMed 23154470Rondina MT, Lam UT, Pendleton RC, Kraiss LW, Wanner N, Zimmerman GA, Hoffman JM, Hanrahan C, Boucher K, Christian PE, Butterfield RI, Morton KA. (18)F-FDG PET in the evaluation of acuity of deep vein thrombosis. Clin Nucl Med. 2012 Dec;37(12):1139-45. doi: 10.1097/RLU.0b013e3182638934.
Related trials for Venothromboembolism
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.
Kathryn Morton, MD principal investigator
University of Utah
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Venothromboembolism, run by University of Utah 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 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: finished, as of the sponsor's last update on 31 Oct 2014. 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. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Accuracy of FDG PET/CT scanning to diagnose presence, extent, and acuity of Ventothromboembolism diagnosis. (time frame: April 2012). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01107327, which also lists 1 linked publication.
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 31 Oct 2014.