Comparison of forceps biopsy and cryobiopsy in bronchoscopically visible pulmonary lesions
ISRCTN | ISRCTN97376650 |
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DOI | https://doi.org/10.1186/ISRCTN97376650 |
Secondary identifying numbers | N/A |
- Submission date
- 01/12/2009
- Registration date
- 19/01/2010
- Last edited
- 29/12/2020
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Cancer
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Plain English summary of protocol
Not provided at time of registration
Contact information
Dr Juergen Hetzel
Scientific
Scientific
Department of Internal Medicine II
University of Tuebingen
Otfried-Müller-Str. 10
Tuebingen
72076
Germany
juergen.hetzel@med.uni-tuebingen.de |
Study information
Study design | Prospective randomised controlled partially blinded multicentre parallel-group study |
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Primary study design | Interventional |
Secondary study design | Randomised controlled trial |
Study setting(s) | Hospital |
Study type | Treatment |
Participant information sheet | Not available in web format, please use the contact details below to request a patient information sheet |
Scientific title | Randomised prospective controlled study for the comparison of forceps biopsy and cryobiopsy in bronchoscopically visible pulmonary lesions |
Study objectives | In patients with endobronchially tumour suspicious lesions cryobiopsy shows a higher sensitivity than forceps biopsy. |
Ethics approval(s) | The corresponding ethics committees and the institutional review boards approved the study protocol. All other centres will seek ethics approval before recruiting participants. |
Health condition(s) or problem(s) studied | Bronchoscopically visible pulmonary lesions |
Intervention | This was a prospective, randomised, partially blinded multicentre study. A total of 600 patients with suspected endobronchial tumours were investigated. Patients were randomised either to sampling using forceps or the cryoprobe. After obtaining biopsy samples a blinded histological evaluation was performed. Follow-up occurred until the timepoint a definitive diagnosis was obtained either by the investigated biopsy methods or by an additional diagnostic method. According to the definitive clinical diagnosis sensitivity for malignancy was evaluated. Procedure related factors such as duration of procedure (i.e. biopsy sampling plus haemostatic measures), anaesthetic requirements and also the adverse event rate were recorded. A follow-up to guarantee patients safety was not necessary in this case since the intervention was biopsy sampling for diagnostics purposes. |
Intervention type | Other |
Primary outcome measure | Sensitivity of forceps biopsy versus cryobiopsy: The biopsy technique utilised was regarded as successful, when histological confirmation of the diagnosis was achieved at the initial bronchoscopy and matched the final diagnosis. If additional tests, e.g. further bronchoscopies, surgery etc. were needed to establish the tumour diagnosis, the biopsy was regarded as not diagnostic. |
Secondary outcome measures | 1. Bleeding frequency and severity: none/mild (no intervention)/severe (at least one intervention for bleeding control applied) 2. The number of samples taken (per protocol the number of biopsies needed was left to the bronchoscopist's discretion with a suggested maximum limit of four samples) 3. Localisation 4. Classification of tumour into exophytic or submucosal growth 5. Level of difficulty to position the probe (easy, moderate or difficult) 6. Duration of the procedure 7. Historical parameters such as quality and size of the samples 8. Need of additional measures, e.g., immunohistology 9. Bronchoscopy technique (rigid/flexible) 10. Quality of histology 11. Influence of forceps size upon diagnostic yield and sample size 12. Diagnostic yield of forceps biopsy versus cryobiopsy in the whole study population All assessed intra-/peri-procedural. |
Overall study start date | 01/06/2005 |
Completion date | 30/10/2008 |
Eligibility
Participant type(s) | Patient |
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Age group | Adult |
Lower age limit | 18 Years |
Sex | Both |
Target number of participants | 600 |
Total final enrolment | 593 |
Key inclusion criteria | 1. Clinical indication for a biopsy of an endoscopically visible endobronchial lesion suspicious for tumour 2. Aged older than 18 years, either sex 3. Signed declaration of consent |
Key exclusion criteria | 1. Haemorrhagic diathesis/anticoagulation 2. Oxygen saturation under 2 l/min less than 90% 3. Severe underlying cardiac disease (unstable angina pectoris, myocardial infarction in the past month, decompensated cardiac insufficiency) |
Date of first enrolment | 01/06/2005 |
Date of final enrolment | 30/10/2008 |
Locations
Countries of recruitment
- Germany
Study participating centre
Department of Internal Medicine II
Tuebingen
72076
Germany
72076
Germany
Sponsor information
University Clinical Center Tuebingen (Germany) - represented by its management
University/education
University/education
c/o Dr Juergen Hetzel
Department of Internal Medicine II
Otfried-Müller-Str. 10
Tübingen
72076
Germany
Website | http://www.uni-tuebingen.de/uni/qvr/e-30/m30-01.html |
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https://ror.org/00pjgxh97 |
Funders
Funder type
Industry
ERBE Elektromedizin GmbH (Germany) - provided cryoprobes and 15 per patient for documentation and additional histological slides
No information available
Results and Publications
Intention to publish date | |
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Individual participant data (IPD) Intention to share | No |
IPD sharing plan summary | Not provided at time of registration |
Publication and dissemination plan | Not provided at time of registration |
IPD sharing plan |
Study outputs
Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
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Results article | results | 01/03/2012 | 29/12/2020 | Yes | No |
Editorial Notes
29/12/2020: The following changes have been made:
1. Publication reference added.
2. The final enrolment number has been added from the reference.