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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT03871231
Registration number
NCT03871231
Ethics application status
Date submitted
5/03/2019
Date registered
12/03/2019
Titles & IDs
Public title
Unpinning Termination Therapy for VT/VF
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Scientific title
An International Clinical Feasibility Study to Evaluate the Safety and Performance of Low-Energy Unpinning Termination Therapy in Patients With VT/VF
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Secondary ID [1]
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CL006
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Ventricular Tachycardia
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Ventricular Fibrillation
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Condition category
Condition code
Cardiovascular
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Other cardiovascular diseases
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Devices - Unpinning Termination Therapy
Experimental: Unpinning Termination Therapy Arm - Subjects will have VT/VF induced and the Cardialen External Stimulation System (CESS) device will deliver electrical stimulation to terminate the arrhythmia
Treatment: Devices: Unpinning Termination Therapy
The Cardialen External Stimulation System (CESS) is the research delivery system for the proprietary Cardialen Unpinning Therapy (UPT) therapy. The CESS is a custom designed and built research device. It is comprised of off-the-shelf commercial components (power supplies, waveform generators, laptop computer, monitor, rack, ECG system, leads, etc.) combined with a custom electrical circuit board and custom software.
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Intervention code [1]
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Treatment: Devices
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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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Safety of UPT therapy
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Assessment method [1]
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Adverse events
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Timepoint [1]
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Study procedure and 30 day post procedure
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Primary outcome [2]
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Safety of UPT therapy
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Assessment method [2]
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Adverse events
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Timepoint [2]
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30 day post procedure
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Primary outcome [3]
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Parameters at which UPT terminates VT and VF
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Assessment method [3]
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Voltage
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Timepoint [3]
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Study procedure
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Secondary outcome [1]
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Voltage at which UPT and endocardial single biphasic shock terminate VT/VF
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Assessment method [1]
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Voltage
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Timepoint [1]
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Study procedure
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Secondary outcome [2]
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Voltage at which UPT and ATP terminate VT
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Assessment method [2]
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Voltage
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Timepoint [2]
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Study procedure
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Eligibility
Key inclusion criteria
1. Life expectancy of 1 year or greater
2. Male or female between 18 and 75 years of age
3. Willing and able to comply with the study protocol, provide a written informed consent
4. Indication for an endocardial VT catheter ablation for sustained, life-threatening monomorphic VT OR an indication for VF and ICD implant (de novo implant, replacement or upgrade) OR CRT-D (de novo implant, upgrade from ICD) with transvenous leads for the risk of or presence of VT and/or VF.
5. Etiology of arrhythmia, or risk of arrhythmia being ischemic dilated cardiomyopathy or non-ischemic idiopathic dilated cardiomyopathy both with LVEF = 35% and meeting local standard of care
6. Medically stable at time of consent to undergo DFT testing performed under general anesthesia or conscious sedation as determined by the investigator
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Minimum age
18
Years
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Maximum age
75
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
The subject must not meet any of the following exclusion criteria:
1. Medically unstable at time of study and unsafe to undergo DFT testing under general anesthesia or conscious sedation as determined by the investigator
2. Hemodynamic instability as determined by the investigator
3. AF or atrial flutter for = 48 hours or unknown duration, and no anticoagulation for preceding 3 weeks and no preoperative transesophageal echocardiographic confirmation of the absence of RA and LA thrombus
4. AF or atrial flutter for <48 hours and no Preoperative transesophageal echocardiographic confirmation of the absence of RA and LA thrombus
5. Presence of intracardiac thrombus
6. Inability to pass catheters to heart due to vascular limitations
7. Cardiovascular anatomical defects that would complicate placement of the lead or catheter required by the protocol, including congenital heart disease and cardiac vein anomalies as determined by the investigator
8. Pregnancy confirmed by test within 7 days of procedure
9. Pacemaker dependent
10. The presence of a normally functioning left ventricular lead which is not planned for revision
11. Presence of ventricular assist device, including Intra-aortic balloon pump
12. Subjects requiring the use of I.V. inotropes and/or vasopressors for hemodynamic support in the 14 days prior to the study
13. Prior VT catheter ablation with associated serious complication, such as hemodynamic compromise despite pressor agents, stroke, cardiac perforation, AC fistula, pneumothorax, sepsis
14. Incessant VT/VF or VT/VF storm
15. LVEF < 20%
16. New York Heart Association (NYHA) Class IV heart failure
17. Planned epicardial VT ablation on the same day as the research study
18. History of hyper-coagulable state that could increase risk of thromboembolic events
19. History of hemodynamic compromise due to valvular heart disease requiring IV inotropes or other circulatory support.
20. Unstable coronary artery disease as determined by the investigator
21. Severe proximal three-vessel or left main coronary artery disease, without revascularization as determined by the investigators
22. History of embolic stroke, Transient Ischemic Attack or other thromboembolic event in the past 6 months
23. History of Hypertrophic Cardiomyopathy, Arrhythmogenic Right Ventricular Dysplasia, Congenital Heart Anomaly, Cardiac Amyloidosis, Genetic Cardiac Channelopathy or Cardiac Sarcoidosis.
24. Cardiovascular surgery or intervention within 1 month prior to enrollment or planned for up to 1 month after enrollment (other than the planned treatment procedure)
25. Morbid obesity: BMI>39 kg/m2
26. Cognitive or mental health status that would interfere with study participation and proper informed consent
27. Presence of mechanical tricuspid valve
28. Active Endocarditis
29. Ventricular arrhythmia etiology sarcoidosis
30. Valvular ventricular tachycardia
31. Previously implanted lead is under recall by manufacturer or evidence of lead failure as determined by the investigator
32. End Stage Renal Disease on hemodialysis or peritoneal dialysis, or estimated glomerular filtration rate (eGFR) <15 ml/min
33. Right atrial or right ventricular lead implanted within 12 months prior to screening
34. Any other medical condition which may affect the outcome of this study or safety of the subject as determined by the investigator
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Study design
Purpose of the study
Other
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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
Stopped early
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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
17/07/2019
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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
15/07/2021
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Sample size
Target
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Accrual to date
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Final
8
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Recruitment in Australia
Recruitment state(s)
QLD,SA,VIC
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Recruitment hospital [1]
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The Prince Charles Hospital - Chermside
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Recruitment hospital [2]
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Gold Coast - Southport
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Recruitment hospital [3]
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Royal Adelaide Hospital - Norwood
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Recruitment hospital [4]
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Monash Medical - Clayton
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Recruitment postcode(s) [1]
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4032 - Chermside
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Recruitment postcode(s) [2]
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4215 - Southport
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Recruitment postcode(s) [3]
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5067 - Norwood
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Recruitment postcode(s) [4]
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3168 - Clayton
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Cardialen, Inc.
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Address
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Country
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Other collaborator category [1]
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Commercial sector/industry
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Name [1]
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Genae
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Address [1]
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Other collaborator category [2]
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Other
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Name [2]
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Five Corners
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Address [2]
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Ethics approval
Ethics application status
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Summary
Brief summary
This study is intended to develop a better method for stopping potentially lethal heart rhythms than currently available defibrillators. This new method, called Unpinning Termination Therapy (UPT), is hypothesized to be effective in stopping these dangerous heart rhythms at lower voltages and energy than current defibrillators. Consequently, UPT may improve survival, reduce patient pain from shocks, and lead to longer lasting and smaller implantable defibrillators.
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Trial website
https://clinicaltrials.gov/study/NCT03871231
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Trial related presentations / publications
Janardhan AH, Gutbrod SR, Li W, Lang D, Schuessler RB, Efimov IR. Multistage electrotherapy delivered through chronically-implanted leads terminates atrial fibrillation with lower energy than a single biphasic shock. J Am Coll Cardiol. 2014 Jan 7-14;63(1):40-8. doi: 10.1016/j.jacc.2013.07.098. Epub 2013 Sep 26. Janardhan AH, Li W, Fedorov VV, Yeung M, Wallendorf MJ, Schuessler RB, Efimov IR. A novel low-energy electrotherapy that terminates ventricular tachycardia with lower energy than a biphasic shock when antitachycardia pacing fails. J Am Coll Cardiol. 2012 Dec 11;60(23):2393-8. doi: 10.1016/j.jacc.2012.08.1001. Epub 2012 Nov 7. Li W, Janardhan AH, Fedorov VV, Sha Q, Schuessler RB, Efimov IR. Low-energy multistage atrial defibrillation therapy terminates atrial fibrillation with less energy than a single shock. Circ Arrhythm Electrophysiol. 2011 Dec;4(6):917-25. doi: 10.1161/CIRCEP.111.965830. Epub 2011 Oct 6. Efimov I, Ripplinger CM. Virtual electrode hypothesis of defibrillation. Heart Rhythm. 2006 Sep;3(9):1100-2. doi: 10.1016/j.hrthm.2006.03.005. Epub 2006 Mar 10. No abstract available. Ripplinger CM, Krinsky VI, Nikolski VP, Efimov IR. Mechanisms of unpinning and termination of ventricular tachycardia. Am J Physiol Heart Circ Physiol. 2006 Jul;291(1):H184-92. doi: 10.1152/ajpheart.01300.2005. Epub 2006 Feb 24. Li W, Ripplinger CM, Lou Q, Efimov IR. Multiple monophasic shocks improve electrotherapy of ventricular tachycardia in a rabbit model of chronic infarction. Heart Rhythm. 2009 Jul;6(7):1020-7. doi: 10.1016/j.hrthm.2009.03.015. Epub 2009 Mar 11. Ambrosi CM, Ripplinger CM, Efimov IR, Fedorov VV. Termination of sustained atrial flutter and fibrillation using low-voltage multiple-shock therapy. Heart Rhythm. 2011 Jan;8(1):101-8. doi: 10.1016/j.hrthm.2010.10.018. Epub 2010 Oct 19.
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Public notes
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Contacts
Principal investigator
Name
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Harris Haqqani, MD
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Address
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The Prince Charles 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
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Address
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Phone
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Fax
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Email
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT03871231