ClinicalTrials.gg
Not yet recruitingNCT03993730CMR GUIDE DCMUpdated Jun 21, 2019

Cardiovascular Magnetic Resonance GUIDEd Insertion of Implantable Cardiac Defibrillator in Dilated CardioMyopathy

An interventional study of ICD and ILR in Dilated Cardiomyopathy, Left Ventricular Systolic Dysfunction and Fibrosis Myocardial, sponsored by Flinders University. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-06-21.

Sponsored by Flinders University · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Jun 2026, 5 months ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
1,880
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

CMR GUIDE DCM is a randomized controlled trial with a registry for non-randomized patients.

Patients enrolled will have non-ischemic cardiomyopathy (NICM) with mild to severe Left Ventricular (LV) systolic dysfunction with replacement fibrosis identified on Cardiac Magnetic Resonance (CMR).

954 patients will be randomised from 50 sites across 4-6 countries worldwide to receive an implantable defibrillator (ICD) or implantable loop recorder (ILR).

Device and clinical follow-up will be performed at 3, 6, 12, 24, 36 months and at end of study.

Read the detailed description

The planned research will have two components: A prospective, blocked, randomized, controlled trial of primary prophylaxis ICD therapy or ILR insertion in patients with LVEF \<45% and Late Gadolinium Enhancement (LGE) on CMR and

A prospective observational registry of patients with LVEF \<45% and no LGE on CMR. Registry patients will not have an intervention but will have the same follow up frequency as the randomized patients.

The Primary objective is to determine if routine CMR guided management strategy of implantable defibrillator (ICD) insertion reduces total mortality compared to a conservative strategy of implantable loop recorder (ILR) insertion and standard care.

The secondary objectives include:

  • To determine if routine CMR guided management strategy of ICD insertion reduces sudden cardiac death (SCD) compared to a conservative strategy of ILR insertion and standard care.
  • To ascertain the rate of SCD in patients with DCM and LGE scar across a wide range of left ventricular ejection fraction (LVEF).

Statistical analysis will be performed on an intention-to-treat basis. The main analysis of time to death from any cause will be performed using a log- rank test.

02

Conditions studied

  • Dilated Cardiomyopathy
  • Left Ventricular Systolic Dysfunction
  • Fibrosis Myocardial
03

In context

Cardiomyopathy, Dilated

255 studies on the registry are indexed under Cardiomyopathy, Dilated; 66 are open to participants now.

This study's planned enrollment of 1,880 is above the median of 43 across 145 interventional studies indexed under Cardiomyopathy, Dilated.

Browse Cardiomyopathy, Dilated studies →

Lead sponsor

Flinders University is the lead sponsor of 13 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age greater than/equal to 18 years old
  • Non-ischemic cardiomyopathy of dilated type
  • \< 45%
  • Able and willing to comply with all pre, post and follow-up testing and requirements
  • On maximum tolerated doses of angiotensin converting enzyme (ACE) inhibitors (or Angiotensin Receptor Blockers(ARB) or Neprilysin Inhibitors) and Beta Blockers

Exclusion criteria

Exclusion Criteria:

  1. Known coronary artery disease (CAD) (History of Myocardial Infarction or Significant Epicardial CAD on Angiography)
  2. Hypertrophic Cardiomyopathy
  3. Cardiomyopathy related to sarcoidosis
  4. Arrhythmogenic Right Ventricular Dysplasia
  5. Standard LGE CMR (e.g. severe claustrophobia, metal)
  6. Currently implanted permanent pacemaker and/or pacemaker/ICD lead
  7. Clinical indication for ICD or pacemaker or Cardiac Resynchronisation Therapy
  8. Contraindications to intravenous Gadolinium
  9. Severe renal insufficiency (\< 45mls/min/1.73m2 )
  10. Heart Failure functional class IV
  11. Conditions associated with \<1 year
  12. Pregnancy or in females of , the non-use of accepted forms of
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
1,880 participants (estimated)

Study arms

  • Other
    Device Implantation

    A prospective, blocked, randomised, controlled trial of primary prophylaxis ICD therapy or ILR insertion in patients with LVEF \<45% and LGE on CMR.

    Device: ICD · Device: ILR

  • No intervention
    Observational Registry

    A prospective observational registry of patients with LVEF \<45% and no LGE on CMR.

Interventions

  • DeviceICD

    Insertion of ICD in patients with LVEF \<45% and LGE on CMR.

  • DeviceILR

    Insertion of ILR in patients with LVEF \<45% and LGE on CMR.

06

What researchers measure

Primary outcomes

  1. All-Cause Mortality

    Time frame: Through to study completion, an average of 4 years

Secondary outcomes

  1. Number of Participants who have Sudden Cardiac Death

    Time frame: Through to study completion, an average of 4 years

  2. Number of Participants who have a Haemodynamically significant ventricular arrhythmia event

    Time frame: Through to study completion, an average of 4 years

  3. Quality of life assessed by Kansas City Cardiomyopathy Questionnaire

    The Kansas City Cardiomyopathy Questionnaire is a 23-item, self-administered instrument that quantifies physical function, symptoms (frequency, severity and recent change), social function, self-efficacy and knowledge, and quality of life. An overall summary score can be derived from the above 23 items which will be between 0-100. A higher score reflects a better health status.

    Time frame: Measured at 3, 6, 12, 24, 36 months through to study completion

  4. Number of Participants who have a Heart Failure related hospitalisation

    Time frame: Through to study completion, an average of 4 years

  5. Health economic evaluation of cost

    Various different country jurisdictions will be chosen

    Time frame: At study completion, an average of 4 years

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Jun 2020; primary completion for Jun 2026, 72 months later.

Of 28 interventional studies with no phase under Cardiomyopathy, Dilated, half reached primary completion within 46 months of starting (the median), counting those still running; a quarter within 31 and three quarters within 73. This study's planned 72 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
May 3, 2019
First posted
Jun 21, 2019
StartEst.
Jun 2020
Primary completionEst.
Jun 2026
CompletionEst.
Jun 2026
Last update
Jun 21, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 21, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03993730
Lead sponsor
Flinders University
Responsible party
Joseph Selvanayagam (Principal Investigator, Flinders University) — Principal investigator
First posted
Jun 21, 2019
Start date
Jun 2020 (estimated)
Primary completion
Jun 2026 (estimated)
Completion
Jun 2026 (estimated)
Last update
Jun 21, 2019

Study contacts

Joseph B Selvanayagam, MBBS
Contact
joseph.selvanayagam@flinders.edu.au
+61 8 8404 2195
Joseph B Selvanayagam, MBBS
principal investigator · Flinders Medical Centre

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Jun 2019. You cannot join it, but the record below documents what was studied.

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