Lung CancerNCT04534413
Ex-Vivo COF Study for Lung Cancer Observation
An observational study of Lung Cancer, run by University Health Network, Toronto at 1 site in Canada.
Trial summary
Accessing nodules located in the most outer part of the lung is challenging. Tissue that will be removed from the lung will be used to see if we can reach and see the nodule with a very small camera. This camera that may reach in the smaller and outer airways is called a composite optical fiberscope (COF). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Lung Cancer
- What is being tested?
- composite optical fiberscope (COF)
- Type of treatment
- Medical device
- How many people
- 50 participants
- Where
- 1 siteCanada
- Study dates
- 5 Aug 2020to 5 Dec 2027
- 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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Any patients scheduled for lobectomy or anatomical segmental resection for malignant lung tumors
Who may be able to join
- Any patients scheduled for lobectomy or anatomical segmental resection for malignant lung tumors.
- 18 years of age or older.
Who cannot join
- 1) Any patients with inability to give informed consent.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
About this study
Official title: Feasibility of the Ultrasmall Composite Optical Fiberscope System for Lung Cancer Observation
Accessing nodules located in the most outer part of the lung is challenging. Tissue that will be removed from the lung will be used to see if we can reach and see the nodule with a very small camera. This camera that may reach in the smaller and outer airways is called a composite optical fiberscope (COF).
The purpose of this study is to evaluate insertion ability of the COF and visualization of the lung tumor by the COF. In order to do so, we plan to evaluate 50 patient samples from the University Health Network over the span of 2 years.
Read the detailed description
Peripheral pulmonary lesions (PPLs), which include pulmonary nodules and masses, are a common problem in pulmonology practice. The incidence of PPLs will likely increase given the growing adoption of chest CT screening for lung cancer. There are several guidelines available for management of PPLs. If bronchoscopy is selected as the method of diagnosis, conventional bronchoscopy has been one platform used for decades to diagnose PPLs. However, conventional bronchoscopic techniques have significant limitations and overall low diagnostic yield for most PPLs. As a result, innovative bronchoscopic techniques and technologies have evolved over the last decade to diagnose PPLs more accurately. However, accessing to PPLs located in the most peripheral part is still challenging.
As a new method to diagnose and localize cancers, photodynamic diagnosis (PDD) has been gaining attention. PDD is a new technique where a photosensitizer injected intravenously accumulates in the abnormal lesion, then its fluorescence can be detected by a detector. To conduct PDD for PPLs, we collaboratively developed a parallel-type composite optical fiberscope (COF) with an outer tip diameter of 0.97 mm with OK Fiber Technology (Kyoto, Japan). Its small size and flexibility of the tip enable it to be inserted into animal ultrasmall airways. The outer membrane of the fiberscope is made from polytetrafluoroethylene in the COF's insertable section and is hydrophilic coated, which reduces frictional forces when in the contact with the bronchial wall resulting in smooth insertion of the fiberscope. As the COF has illumination fibers and a laser fiber inside, simultaneous white-light and fluorescence imaging with real-time monitoring can be performed to confirm the tip position of the fiberscope during laser irradiation. In this study, we want to evaluate the COF regarding the quality of white-light images and the accessibility of lung tumors located in the peripheral area of the lung.
- Conditions
- Lung Cancer
- Being tested
- composite optical fiberscope (COF)
- Medical subject headings
- Lung Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
composite optical fiberscope (COF)Device
Fiber Technology
What is being measured
The primary outcome is the main question the study is designed to answer.
insertion ability of the COF using human ex-vivo lungs
Measured: 3 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Sep 2020
- Study start5 Aug 2020
- Primary completion5 Dec 2027 (estimated)
- Study completion5 Dec 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Lung CancerStudies of the same condition, open and under way.
- More trials run by University Health Network, TorontoThe 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
- Other
- Time perspective
- Prospective
- Enrolment
- 50 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University Health Network, Toronto
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Kazuhiro Yasufuku, University Health Network, Toronto
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04534413
- Sponsor's protocol ID
- 20-5565
- Status last verified
- Apr 2026
- First submitted
- 26 Aug 2020
- Last updated
- 1 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 1 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Feasibility of the Ultrasmall Composite Optical Fiberscope System for Lung Cancer Observation
- ClinicalTrials.gov ID
- NCT04534413
- Acronym / sponsor ID
- 20-5565
- Conditions
- Lung Cancer
- Study type
- Observational
- Recruitment status
- Enrolling by invitation
- Enrolment
- 50 participants (estimated)
- Lead sponsor
- University Health Network, TorontoUniversity, hospital or other
- Study start
- 5 Aug 2020 (actual)
- Primary completion
- 5 Dec 2027 (estimated)
- Study completion
- 5 Dec 2027 (estimated)
- First posted
- 1 Sep 2020 (actual)
- 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.
Accessing nodules located in the most outer part of the lung is challenging. Tissue that will be removed from the lung will be used to see if we can reach and see the nodule with a very small camera. This camera that may reach in the smaller and outer airways is called a composite optical fiberscope (COF).
The purpose of this study is to evaluate insertion ability of the COF and visualization of the lung tumor by the COF. In order to do so, we plan to evaluate 50 patient samples from the University Health Network over the span of 2 years.
Detailed description
Peripheral pulmonary lesions (PPLs), which include pulmonary nodules and masses, are a common problem in pulmonology practice. The incidence of PPLs will likely increase given the growing adoption of chest CT screening for lung cancer. There are several guidelines available for management of PPLs. If bronchoscopy is selected as the method of diagnosis, conventional bronchoscopy has been one platform used for decades to diagnose PPLs. However, conventional bronchoscopic techniques have significant limitations and overall low diagnostic yield for most PPLs. As a result, innovative bronchoscopic techniques and technologies have evolved over the last decade to diagnose PPLs more accurately. However, accessing to PPLs located in the most peripheral part is still challenging.
As a new method to diagnose and localize cancers, photodynamic diagnosis (PDD) has been gaining attention. PDD is a new technique where a photosensitizer injected intravenously accumulates in the abnormal lesion, then its fluorescence can be detected by a detector. To conduct PDD for PPLs, we collaboratively developed a parallel-type composite optical fiberscope (COF) with an outer tip diameter of 0.97 mm with OK Fiber Technology (Kyoto, Japan). Its small size and flexibility of the tip enable it to be inserted into animal ultrasmall airways. The outer membrane of the fiberscope is made from polytetrafluoroethylene in the COF's insertable section and is hydrophilic coated, which reduces frictional forces when in the contact with the bronchial wall resulting in smooth insertion of the fiberscope. As the COF has illumination fibers and a laser fiber inside, simultaneous white-light and fluorescence imaging with real-time monitoring can be performed to confirm the tip position of the fiberscope during laser irradiation. In this study, we want to evaluate the COF regarding the quality of white-light images and the accessibility of lung tumors located in the peripheral area of the lung.
Study design
- Observational model
- Other
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Any patients scheduled for lobectomy or anatomical segmental resection for malignant lung tumors
Key inclusion criteria (2 listed)
- Any patients scheduled for lobectomy or anatomical segmental resection for malignant lung tumors.
- 18 years of age or older.
Key exclusion criteria (1 listed)
- 1) Any patients with inability to give informed consent.
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 |
|---|---|---|
| composite optical fiberscope (COF)Fiber Technology | Device | – |
Primary outcome
insertion ability of the COF using human ex-vivo lungs
Time frame: 3 years
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 1 May 2026.
- 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.
The record lists no contact. Use the official record to reach the sponsor.
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 Lung Cancer, run by University Health Network, Toronto at 1 site in Canada.
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: enrolling by invitation, as of the sponsor's last update on 1 May 2026. 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 Canada. 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?
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?
insertion ability of the COF using human ex-vivo lungs (time frame: 3 years). 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 1 May 2026.