Venous ThromboembolismFILTERNCT01158482
Filter Initial & Long Term Evaluation After Placement and Retrieval Registry
An observational study of Venous Thromboembolism, run by Stanford University at 1 site in United States.
Trial summary
A prospective data registry for all patients who undergo IVC (Inferior Vena Cava) filter placement or retrieval at Stanford. Potential enrollees will already be undergoing the procedure. If patients are willing, they will be prospectively enrolled prior to the procedure. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Venous Thromboembolism
- What is being tested?
- IVC Filter Placement or Retrieval
- Type of treatment
- Surgery or procedure
- How many people
- 5,000 participants
- Where
- 1 siteUnited States
- Study dates
- Jun 2010to Jun 2030
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: No specific criteria. Anyone who will be undergoing IVC Filter Placement/Retrieval will be eligible.
Who may be able to join
- Participants are adults, 18 years old or older
- Participants will be undergoing a procedure to have an IVC filter placed or removed
Who cannot join
- None
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
Stanford University School of Medicine
Stanford, California, 94305
William Kuo, 650-724-7362, wkuo@stanford.edu
William T Kuo MD
About this study
Official title: FILTER - Filter Initial & Long Term Evaluation After Placement and Retrieval (Including Laser-Assisted Retrieval) Prospective Registry
A prospective data registry for all patients who undergo IVC (Inferior Vena Cava) filter placement or retrieval at Stanford. Potential enrollees will already be undergoing the procedure. If patients are willing, they will be prospectively enrolled prior to the procedure. As part of the study, chart and clinical data reviews will be used to track patient progress and response to the treatment.
Read the detailed description
Patient clinical data will be used in a clinical registry. Before a patient is to undergo their initial procedure for filter placement/retrieval, we will approach them for consent to participate in the study. If patients consent, we will follow clinical data from the procedure, and perform prospective follow-up over time to track clinical response and effects of the placement or removal procedure.
Various real-world protocols involving advanced filter removal (including laser-assisted filter removal) will be investigated by conducting registry-based clinical trials.
Participants will only be enrolled if they will be undergoing an IVC (Inferior Vena Cava) filter placement/retrieval procedure.
- Conditions
- Venous Thromboembolism
- Being tested
- IVC Filter Placement or Retrieval
- Medical subject headings
- Venous Thromboembolism
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
IVC Filter Placement or RetrievalProcedure or surgery
An IVC Filter will be placed or removed using endovascular techniques.
| Study group | Role | What they receive |
|---|---|---|
| IVC Filter Placement or Removal | Patients undergoing IVC filter placement and/or IVC filter removal at Stanford Medical Center. Receives: Procedure: IVC Filter Placement or Retrieval |
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Jul 2010 (estimated)
- Study startJun 2010
- Primary completionJun 2027 (estimated)
- Study completionJun 2030 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for Venous ThromboembolismStudies of the same condition, open and under way.
- More trials run by Stanford UniversityThe 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
- 5,000 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Stanford University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, William Kuo, Stanford University
- Investigators
- William T Kuo MD, Principal investigator, Stanford University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01158482
- Sponsor's protocol ID
- SU-06252010-6416
- Other IDs
- 19051 - eProtocol, FILTER REGISTRY
- Acronym
- FILTER
- Status last verified
- Sep 2025
- First submitted
- 6 Jul 2010
- Last updated
- 26 Sep 2025
- Results posted
- No
- Data monitoring committee
- No
Publications
Kuo WT, Doshi AA, Ponting JM, Rosenberg JK, Liang T, Hofmann LV. Laser-Assisted Removal of Embedded Vena Cava Filters: A First-In-Human Escalation Trial in 500 Patients Refractory to High-Force Retrieval. J Am Heart Assoc. 2020 Dec 15;9(24):e017916. doi: 10.1161/JAHA.119.017916. Epub 2020 Nov 30.
PubMed 33252283Sheu AY, Hoang NS, Kesselman AJ, Liang T, Rosenberg JK, Kuo WT. Prophylactic IVC filter placement in bariatric surgery patients: results from a prospective filter registry. CVIR Endovasc. 2018;1(1):13. doi: 10.1186/s42155-018-0021-5. Epub 2018 Nov 15.
PubMed 30652145Kuo WT, Odegaard JI, Rosenberg JK, Hofmann LV. Laser-Assisted Removal of Embedded Vena Cava Filters: A 5-Year First-in-Human Study. Chest. 2017 Feb;151(2):417-424. doi: 10.1016/j.chest.2016.09.029. Epub 2016 Oct 8.
PubMed 27729265Kuo WT, Odegaard JI, Rosenberg JK, Hofmann LV. Excimer laser-assisted removal of embedded inferior vena cava filters: a single-center prospective study. Circ Cardiovasc Interv. 2013 Oct 1;6(5):560-6. doi: 10.1161/CIRCINTERVENTIONS.113.000665. Epub 2013 Sep 24.
PubMed 24065445
Study at a glance
From the registry record, last updated by the sponsor on 26 Sep 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- FILTER - Filter Initial & Long Term Evaluation After Placement and Retrieval (Including Laser-Assisted Retrieval) Prospective Registry
- ClinicalTrials.gov ID
- NCT01158482
- Acronym / sponsor ID
- FILTER / SU-06252010-6416
- Conditions
- Venous Thromboembolism
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 5,000 participants (estimated)
- Lead sponsor
- Stanford UniversityUniversity, hospital or other
- Study start
- Jun 2010
- Primary completion
- Jun 2027 (estimated)
- Study completion
- Jun 2030 (estimated)
- First posted
- 8 Jul 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.
A prospective data registry for all patients who undergo IVC (Inferior Vena Cava) filter placement or retrieval at Stanford. Potential enrollees will already be undergoing the procedure. If patients are willing, they will be prospectively enrolled prior to the procedure. As part of the study, chart and clinical data reviews will be used to track patient progress and response to the treatment.
Detailed description
Patient clinical data will be used in a clinical registry. Before a patient is to undergo their initial procedure for filter placement/retrieval, we will approach them for consent to participate in the study. If patients consent, we will follow clinical data from the procedure, and perform prospective follow-up over time to track clinical response and effects of the placement or removal procedure.
Various real-world protocols involving advanced filter removal (including laser-assisted filter removal) will be investigated by conducting registry-based clinical trials.
Participants will only be enrolled if they will be undergoing an IVC (Inferior Vena Cava) filter placement/retrieval procedure.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| IVC Filter Placement or Removal | – | Procedure: IVC Filter Placement or RetrievalPatients undergoing IVC filter placement and/or IVC filter removal at Stanford Medical Center. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- No specific criteria. Anyone who will be undergoing IVC Filter Placement/Retrieval will be eligible.
Key inclusion criteria (2 listed)
- Participants are adults, 18 years old or older
- Participants will be undergoing a procedure to have an IVC filter placed or removed
Key exclusion criteria (1 listed)
- None
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 |
|---|---|---|
| IVC Filter Placement or RetrievalAn IVC Filter will be placed or removed using endovascular techniques. | Procedure or surgery | IVC Filter Placement or Removal |
Primary outcome
Not reported in the source record.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Sep 2025.
- Derived from this study: PubMed 33252283Kuo WT, Doshi AA, Ponting JM, Rosenberg JK, Liang T, Hofmann LV. Laser-Assisted Removal of Embedded Vena Cava Filters: A First-In-Human Escalation Trial in 500 Patients Refractory to High-Force Retrieval. J Am Heart Assoc. 2020 Dec 15;9(24):e017916. doi: 10.1161/JAHA.119.017916. Epub 2020 Nov 30.
- Derived from this study: PubMed 30652145Sheu AY, Hoang NS, Kesselman AJ, Liang T, Rosenberg JK, Kuo WT. Prophylactic IVC filter placement in bariatric surgery patients: results from a prospective filter registry. CVIR Endovasc. 2018;1(1):13. doi: 10.1186/s42155-018-0021-5. Epub 2018 Nov 15.
- Derived from this study: PubMed 27729265Kuo WT, Odegaard JI, Rosenberg JK, Hofmann LV. Laser-Assisted Removal of Embedded Vena Cava Filters: A 5-Year First-in-Human Study. Chest. 2017 Feb;151(2):417-424. doi: 10.1016/j.chest.2016.09.029. Epub 2016 Oct 8.
- Derived from this study: PubMed 24065445Kuo WT, Odegaard JI, Rosenberg JK, Hofmann LV. Excimer laser-assisted removal of embedded inferior vena cava filters: a single-center prospective study. Circ Cardiovasc Interv. 2013 Oct 1;6(5):560-6. doi: 10.1161/CIRCINTERVENTIONS.113.000665. Epub 2013 Sep 24.
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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.
William T Kuo MD principal investigator
Stanford University
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 Venous Thromboembolism, run by Stanford University 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 2 inclusion and 1 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: looking for participants now, as of the sponsor's last update on 26 Sep 2025. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact William Kuo ((650) 724-7362, wkuo@stanford.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01158482, which also lists 4 linked publications.
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 26 Sep 2025.