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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT02033343
Registration number
NCT02033343
Ethics application status
Date submitted
9/01/2014
Date registered
10/01/2014
Date last updated
14/06/2021
Titles & IDs
Public title
Feasibility Study Into Adjustment of the Radiation Beam to Account for Prostate Motion During Radiotherapy.
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Scientific title
Phase I Feasibility Study of Prostate Cancer Radiotherapy Using Realtime Dynamic Multileaf Collimator Adaptation and Radiofrequency Tracking (Calypso)
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Secondary ID [1]
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12-NSCCRO-P002
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Universal Trial Number (UTN)
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Trial acronym
CALYPSO
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Prostate Cancer
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Condition category
Condition code
Cancer
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Prostate
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Other - Prostate cancer radiotherapy using real-time tracking
Experimental: Real-time tracking & beam adjustment - Prostate cancer radiotherapy using real-time tracking
Treatment: Other: Prostate cancer radiotherapy using real-time tracking
Radiotherapy delivered using Calypso radiofrequency emitting beacon guided real-time prostate localisation and beam adjustment using Dynamic Multi-leaf Collimator tracking software.
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Intervention code [1]
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Treatment: Other
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Percentage of fractions being successfully delivered with Calypso-guided tracking.
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Assessment method [1]
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The primary endpoint of this Pilot study is to evaluate the feasibility of implementing realtime adaptive radiotherapy using DMLC. This will be assessed as greater than 95% of fractions being successfully delivered (no equipment failures and tracking MLC follows beacons) with Calypso-guided tracking.
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Timepoint [1]
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2 years
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Secondary outcome [1]
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Improvement in overall beam-target geometric alignment.
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Assessment method [1]
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Geometric alignment will be measured as average difference between beacon centroid and shifted MLC against original MLC.
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Timepoint [1]
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2 years
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Secondary outcome [2]
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Improvement in dosimetric coverage of prostate and normal healthy structures.
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Assessment method [2]
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Dosimetric improvement will be assessed by applying the methods of Poulsen to reconstruct delivered dose distributions for each fraction of patient cohort and summed total dose. Preliminary data demonstrates dose reconstruction to follow the planned dose distribution, potentially even for ultrahypofractionated cases with longer treatment duration and Flattening Filter Free (FFF) delivery with larger potential delivery error per time increment.
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Timepoint [2]
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2 years
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Secondary outcome [3]
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Acute toxicity
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Assessment method [3]
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Portion of patients with grade 3 or greater genitourinary or gastrointestinal toxicity assessed using the Modified Radiation Therapy Oncology Group (RTOG) Toxicity Scale.
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Timepoint [3]
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Assessed up to 12 weeks post treatment
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Secondary outcome [4]
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Late toxicity
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Assessment method [4]
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Ongoing reporting of gastrointestinal and genitourinary toxicity of the DMLC tracking cohort will be compared to matched pair controls using the modified RTOG scale.
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Timepoint [4]
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Up to five years
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Secondary outcome [5]
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Biochemical control
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Assessment method [5]
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Ongoing biochemical control of the DMLC tracking cohort will be compared to matched pair controls using Prostate Specific Antigen (PSA).
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Timepoint [5]
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Up to five years
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Eligibility
Key inclusion criteria
* Patients undergoing external beam radiotherapy at Northern Sydney Cancer Centre
* Histologically proven prostate adenocarcinoma
* Prostate Specific Antigen (PSA) obtained within 3 months prior to enrolment.
* Patient must be able to have Varian Calypso beacons placed in the prostate (if on anticoagulants, must be cleared by Local Medical Officer or cardiologist).
* ECOG performance status 0-2
* Ability to understand and the willingness to sign a written informed consent document.
* Body habitus enabling Calypso tracking (as per Calypso Determining a Patient's Localisation Designation & Orientation before implantation)
* Prostate dimension that allows leaf span with tracking margin of ±8mm
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Minimum age
35
Years
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Maximum age
85
Years
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Sex
Males
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Previous pelvic radiotherapy
* Prior total prostatectomy
* Pacemaker
* Implantable defibrillator
* Insulin infusion pump
* Hip prosthesis
* Unwilling or unable to give informed consent
* Unwilling or unable to complete quality of life questionnaires.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
NA
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/10/2013
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/02/2018
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Sample size
Target
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Accrual to date
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Final
30
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
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Northern Sydney Cancer Centre, Royal North Shore Hospital - St Leonards
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Recruitment postcode(s) [1]
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2065 - St Leonards
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Funding & Sponsors
Primary sponsor type
Other
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Name
Royal North Shore Hospital
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Address
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Country
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Other collaborator category [1]
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Other
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Name [1]
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University of Sydney
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Address [1]
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Country [1]
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Ethics approval
Ethics application status
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Summary
Brief summary
The purpose of this study is to monitor movement of the prostate during radiotherapy and adjust the radiation beam to account for any motion seen. This will increase the radiation dose to the prostate and decrease the dose to the rectum and bladder.
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Trial website
https://clinicaltrials.gov/study/NCT02033343
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Trial related presentations / publications
Colvill E, Booth JT, O'Brien RT, Eade TN, Kneebone AB, Poulsen PR, Keall PJ. Multileaf Collimator Tracking Improves Dose Delivery for Prostate Cancer Radiation Therapy: Results of the First Clinical Trial. Int J Radiat Oncol Biol Phys. 2015 Aug 1;92(5):1141-1147. doi: 10.1016/j.ijrobp.2015.04.024. Epub 2015 Apr 17. Keall PJ, Colvill E, O'Brien R, Ng JA, Poulsen PR, Eade T, Kneebone A, Booth JT. The first clinical implementation of electromagnetic transponder-guided MLC tracking. Med Phys. 2014 Feb;41(2):020702. doi: 10.1118/1.4862509. Colvill E, Poulsen PR, Booth JT, O'Brien RT, Ng JA, Keall PJ. DMLC tracking and gating can improve dose coverage for prostate VMAT. Med Phys. 2014 Sep;41(9):091705. doi: 10.1118/1.4892605.
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Public notes
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Contacts
Principal investigator
Name
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Thomas N Eade, MBBS
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Address
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Royal North Shore Hospital
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Type
Citations or Other Details
Journal
Keall PJ, Colvill E, O'Brien R, Ng JA, Poulsen PR,...
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Journal
Colvill E, Poulsen PR, Booth JT, O'Brien RT, Ng JA...
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Results not provided in
https://clinicaltrials.gov/study/NCT02033343
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