- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01676012
Hd-bronchoscopy, Comparison to Standard White Light and Autofluorescence Bronchoscopy
High Definition Bronchoscopy; an Exploratory Study of Diagnostic Value in Comparison to Standard White Light Bronchoscopy and Autofluorescence Bronchoscopy
Through technological improvement a new technique has become available in the form of high-definition (HD-) bronchoscopy. Current normal video white light bronchoscopy is the standard, and video-autofluorescence bronchoscopy (AFB) is offered by specialized centers only. The impact of this development with high-definition videobronchoscopy using a 1.1 megapixel chip on the diagnostic performance of bronchoscopy is however unknown.
The aim of the present study therefore is to explore the diagnostic performance (sensitivity and specificity) of HD-videobronchoscopy, HD + surface enhancement (iScan filtering technique) and HD + tone enhancement filtering in comparison to standard WLB and dual mode SAFE3000 autofluorescence videobronchoscopy in a high risk population.
Study Overview
Status
Conditions
Detailed Description
Rationale Bronchoscopy is one of the most important procedures in diagnosis of lung cancer and other pulmonary diseases. This procedures renders important anatomical information and subtle changes in the epithelium or vascularity of the bronchial tree are clues to guide the endoscopist in this procedure, especially in case of centrally located lung cancer. These subtle changes may influence the choice of treatment, site of biopsy and resectability of cancers when determining resection margins but also in case of multifocal premalignant disease. A recently published meta-analysis has shown diagnostic superiority of autofluorescence bronchoscopy (AFB) over routine white light bronchoscopy (WLB). Furthermore, patients with a head and neck cancer have an increased risk of developing lung cancer given their smoking habits. Through technological improvement a new technique has become available in the form of high-definition (HD-) bronchoscopy. Current normal video white light bronchoscopy is the standard, and video-autofluorescence bronchoscopy (AFB) is offered by specialized centers only. The impact of this development with high-definition videobronchoscopy using a 1.1 megapixel chip on the diagnostic performance of bronchoscopy is however unknown.
Objective (primary and secondary outcome)
(1) Investigate sensitivity of HD bronchoscopy, with or without surface enhancement or tone enhancement in comparison to AFB (the 'gold standard') and standard WLB for detecting abnormalities of the tracheobronchial tree. Furthermore we aim to investigate determination of resection margins of (suspected) malignancies in the glottic and supraglottic area or centrally located lung cancer in comparison to autofluorescence bronchoscopy (SAFE 3000 dual video mode) in a high risk population with biopsies from all suspect lesions identified by either technique. (2) When the sensitivity and specificity of HD videobronchoscopy in either mode in the abovementioned study is in the vicinity of the reported sensitivity and specificity of SAFE3000 dual mode videobronchoscopy we suggest to use the results of this study perform a power analysis. With this information it may then be possible to design a new future study to compare sensitivity for detecting premalignant lesions in a high risk population in a prospective study.
Study design This study is a descriptive exploratory randomized observational study with a blinded post procedure analysis of the diagnostic performance of HD bronchoscopy in comparison to WLB and AFB.
Study population Patients scheduled for diagnostic or therapeutic procedure under general anesthesia by the cardiothoracic or thoracic surgeon or ear-, nose- and throat (ENT) surgeon with suspected or proven lung cancer or head and neck cancer are eligible for this exploratory study. Eligible are patients with ASA physical status 1-3 patients aged 18 years or older. Ineligibility criteria are all known contraindications for diagnostic bronchoscopy (bleeding disorders, indication for use of anticoagulant therapy (acenocoumarol, warfarins, therapeutic dose of low molecular weight heparins or clopidogrel), known allergy for lidocaine, known pulmonary hypertension, recent and/or uncontrolled cardiac disease). Presence of contraindications for the use of laryngeal mask (anatomical abnormalities, increased risk for intubation (mallampati score 4), ASA classification greater than or equal to 4.
Study procedure Prior to surgery by the ENT surgeon or cardiothoracic surgeon bronchoscopy will be performed by an experienced chest physician through a laryngeal mask under general anaesthesia. Bronchoscopy will be performed in a standardized order using five different imaging modes. The order of the different modes will be randomized. High-definition digital videos will be made from all procedures without in screen indications of date, time or reference to study site or patient identification. The five imaging modes used in this study are: Standard white light videobronchoscopy (WLB); High Definition (HD-) bronchoscopy; HD-bronchoscopy + surface enhancement; HD-bronchoscopy + tone enhancement and Auto Fluorescence Bronchoscopy (AFB - SAFE3000) in dual video mode. All visible abnormalities suspected for malignancy or pre-malignancy will be biopsied afterwards. The HD-digital video's will be reviewed by the experienced bronchoscopists in random order and blinded for patient, study site and date and scored using a predefined scoring system to describe surface, vascularity and tumours. Premalignant lesions identified by multiple techniques are considered as non-inferior. From each patient 5 HD- films will be generated. These films will be reviewed in a blinded fashion and random order by two experienced pulmonologists and an independent equally experienced third pulmonologist. When new clinically relevant abnormalities are found the normally indicated diagnostic procedures will be followed and performed immediately after completion of the videoregistration. All findings will be disclosed to the patient and the physician in charge by the investigator and the impact of these findings on the planned diagnostic or therapeutic procedure will be registered.
Main study parameter / endpoints The bronchoscopy videos will be scored by blinded experienced endoscopists on epithelial changes, vascularity changes, presence or suspicion of dysplasia, presence of suspicion of carcinoma in situ, and tumor margins. The study is a descriptive exploratory study of diagnostic performance of HD-bronchoscopy using different imaging techniques in comparison to standard white light bronchoscopy and autofluorescence bronchoscopy in determining epithelial changes, changes in vascularity and tumour margins. As a secondary outcome we aim, when differences are established between the different bronchoscopy modes, to perform a power analysis to determine the feasibility of a prospectively designed study to investigate the diagnostic performance of HD bronchoscopy.
Nature and extent of the burden and risks associated with participation, benefit and group relatedness After start of the general anaesthesia for the planned operation a laryngeal mask airway is inserted by the anesthesiologist. Bronchoscopy is then performed by a very experienced pulmonologist using routine topical anesthesics. In this way the burden for the patient and the risk of complications is very low. These patients have an indication for the planned surgical procedure and have been evaluated by an anesthesiologist prior to the procedure and are considered fit for surgery. The total anesthesia time for the planned procedure will be increased by 10 to 15 minutes.
Bronchoscopy is a very safe diagnostic procedure, the reported complications are in general attributable to te more invasive diagnostic procedures performed during that diagnostic bronchoscopy like biopsy, lavage and needle aspirations. This is not the aim of this study, invasive diagnostic procedures will only be performed in case of a clinically relevant new finding. In general we expect that the vast majority of the patients involved will not have any benefit of participating in this study
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
Geert Grooteplein 10
-
Nijmegen, Geert Grooteplein 10, Netherlands, 6525 GA
- Radboud university medical center Nijmegen
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patients fit for surgery and scheduled for diagnostic or therapeutic surgical procedure under general anesthesia by the cardiothoracic or thoracic surgeon or ENT surgeon with suspected or proven lung cancer or head and neck cancer.
- ASA physical status 1-3.
- Age 18 years or older.
- informed consent
Exclusion Criteria:
Contraindications are all known contraindications for diagnostic bronchoscopy such as:
- bleeding disorders,
- indication for use of anticoagulant therapy (acenocoumarol, warfarins, therapeutic dose of low molecular weight heparins or clopidogrel),
- known allergy for lidocaine,
- known pulmonary hypertension,
- recent and/or uncontrolled cardiac disease. Presence of contraindications for the use of laryngeal mask (anatomical abnormalities) increased risk for intubation (mallampati score 4), or compromised upper airway due to extension of primary head and neck cancer.
ASA classification greater than or equal to 4.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
---|
five types of bronchoscopy
Bronchoscopy will be performed in a standardized order using five different imaging modes.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Sensitivity
Time Frame: one year
|
Investigate sensitivity of HD bronchoscopy, with or without surface enhancement or tone enhancement in comparison to AFB (the 'gold standard') and standard WLB for detecting abnormalities of the tracheobronchial tree.
So we used 5 types of bronchoscopy; SWL (=standard white light), HD (=high defenition bronchoscopy without surface/tone enhancement), HD-i-Scan1 (=high defention bronchoscopy with surface enhancement), HD-i-scan 2 (=high defenition bronchoscopy with tone enhancement), AFB (=autofluorescence bronchoscopy).
Furthermore we aim to investigate determination of resection margins of (suspected) malignancies in the glottic and supraglottic area or centrally located lung cancer in comparison to autofluorescence bronchoscopy (SAFE 3000 dual video mode) in a high risk population with biopsies from all suspect lesions identified by either technique.
|
one year
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Sensitivity and Specificity of HD Videobronchoscopy
Time Frame: one year
|
When the sensitivity and specificity of HD videobronchoscopy in either mode in the abovementioned study is in the vicinity of the reported sensitivity and specificity of SAFE3000 dual mode videobronchoscopy we suggest to use the results of this study perform a power analysis.
With this information it may then be possible to design a new future study to compare sensitivity for detecting premalignant lesions in a high risk population in a prospective study.
|
one year
|
Collaborators and Investigators
Investigators
- Principal Investigator: HFM vanderHeijden, MD, Principal Investigator
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 38719
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Cancer
-
University of Michigan Rogel Cancer CenterRecruitingCancer Liver | Cancer Brain | Cancer Head &Neck | Cancer PelvisUnited States
-
Cellworks Group Inc.RecruitingCancer | Relapsed Cancer | Refractory CancerUnited States
-
UNC Lineberger Comprehensive Cancer CenterHyundai Hope On WheelsRecruitingCancer | Pediatric Cancer | Survivorship | Cancer MetastaticUnited States
-
Vanderbilt-Ingram Cancer CenterNational Institutes of Health (NIH)Active, not recruitingAdvanced Cancer | Relapsed Cancer | Refractory CancerUnited States
-
MiRXES Pte LtdRecruitingBreast Cancer | Gastric Cancer | Colorectal Cancer | Pancreatic Cancer | Esophageal Cancer | Ovarian Cancer | Prostate Cancer | Thoracic Cancer | Liver CancerSingapore
-
Sidney Kimmel Cancer Center at Thomas Jefferson...CompletedStage I Breast Cancer | Stage I Uterine Corpus Cancer | Stage II Uterine Corpus Cancer | Stage III Uterine Corpus Cancer | Stage II Breast Cancer | Stage IIIA Breast Cancer | Stage IIIB Breast Cancer | Stage IA Breast Cancer | Stage IB Breast Cancer | Stage IIA Breast Cancer | Stage IIB Breast Cancer | Stage... and other conditionsUnited States
-
Massachusetts General HospitalNational Comprehensive Cancer NetworkCompletedGastric Cancer | Pancreatic Cancer | Esophageal Cancer | Rectal Cancer | Colon Cancer | Hepatobiliary CancerUnited States
-
City of Hope Medical CenterNational Cancer Institute (NCI)CompletedStage III Pancreatic Cancer | Stage IIA Pancreatic Cancer | Stage IIB Pancreatic Cancer | Stage IV Gastric Cancer | Stage IVA Colorectal Cancer | Stage IVA Pancreatic Cancer | Stage IVB Colorectal Cancer | Stage IVB Pancreatic Cancer | Stage IIIA Gastric Cancer | Stage IIIB Gastric Cancer | Stage IIIC Gastric... and other conditionsUnited States
-
Johns Hopkins UniversityNational Cancer Institute (NCI); National Institute on Minority Health and...Enrolling by invitationCancer | Advanced Cancer | End Stage Cancer | MalignancyUnited States
-
University of California, San FranciscoBristol-Myers Squibb; PfizerTerminatedStage IIIA Rectal Cancer | Stage IIIB Rectal Cancer | Stage IIIC Rectal Cancer | Metastatic Colorectal Adenocarcinoma | Metastatic Colon Adenocarcinoma | Metastatic Rectal Adenocarcinoma | Stage IIIA Colon Cancer | Stage IIIB Colon Cancer | Stage IIIC Colon Cancer | Stage IV Colon Cancer | Stage IV Rectal... and other conditionsUnited States