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Atrial Fibrillation (AF)NCT07380932

Catheter Ablation for AF in Patients With Severe Mitral Regurgitation After Successful Transcatheter Mitral-Valve Repair

A study testing Pulmonary Vein Isolation in people with Atrial Fibrillation (AF) and Mitral Valve (MV) Regurgitation, run by Atrial Fibrillation Network at 4 sites in Germany.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
Search all trials

Trial summary

CABA-MiTRA-AFNET12 is a non-commercial, parallel-group, prospective, randomised, open, blinded endpoint assessment (PROBE), multi-centre, therapy strategy trial. The trial investigates patients with severe mitral valve regurgitation who have undergone transcatheter edge-to-edge mitral valve repair (M-TEER) and have… Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Pulmonary Vein Isolation
Could I receive a placebo?
No, everyone receives an active treatment
How many people
956 participants
Where
4 sitesGermany
Study dates
1 Sep 2026to 31 Mar 2032
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients with ECG-documented atrial fibrillation (AF).
  • Transcatheter edge-to-edge mitral-valve repair (TEER) for severe functional mitral valve regurgitation (MR) with successful result (less than moderate MR, gradient < 5 mmHg) performed within a period of minimum of 30 days and a maximum of 6 months. Moderate residual MR is eligible if no further mitral valve intervention or surgery is planned and patient is stable for > 3 months.
  • Provision of signed informed consent.

Who cannot join

  • Age <18 years
  • Patient not suitable for AF ablation
  • Previous ablation procedure for AF
  • Acute coronary syndrome, cardiac surgery, angioplasty, or cerebrovascular accident within 2 months prior to enrolment
  • Untreated hypothyroidism or hyperthyroidism requiring therapy
  • Enrolment in another randomised study
Show all 11Show fewer
  • Indication for cardiac resynchronization therapy
  • Current pregnancy, breastfeeding, or women not using reliable contraceptive measures during fertility age
  • Mental or physical inability to participate in the study
  • Planned cardiovascular intervention or operation
  • Life expectancy ≤ 12 month

Trial locations and contacts

4 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Vincent Beuger, PhD contact

+49 251 276001 64

caba-mitra@af-net.eu

Sabine Jürgensmeyer, PhD contact

+4925127600167

caba-mitra@af-net.eu

Germany4 sites
  • University Hospital Cologne

    Cologne

    Daniel Steven, MD, + 49 221 478 32396, caba-mitra@af-net.eu

  • University Heart and Vascular Center Frankfurt

    Frankfurt

    Reza Wakili, MD, +49 69 6301-5789, caba-mitra@af-net.eu

  • Asklepios Hospital St. Georg

    Hamburg

    Stephan Willems, MD, +49 40 181885-2050/2309, caba-mitra@af-net.eu

  • University Hospital Münster

    Münster, 48149

    Lars Eckardt, MD, +49 251 834 7637, caba-mitra@af-net.eu

Other trials in Germany

About this study

CABA-MiTRA-AFNET12 is a non-commercial, parallel-group, prospective, randomised, open, blinded endpoint assessment (PROBE), multi-centre, therapy strategy trial. The trial investigates patients with severe mitral valve regurgitation who have undergone transcatheter edge-to-edge mitral valve repair (M-TEER) and have concomitant atrial fibrillation (AF). The objective is to assess whether catheter ablation of AF is superior to standard-of-care treatment in patients after TEER in reduction of major adverse cardiovascular and cerebrovascular events (MACCE).

Read the detailed description

The occurrence of atrial fibrillation (AF) as the most frequent arrhythmia is associated with an increased risk of stroke, acute coronary syndrome, heart failure, and cardiovascular death. AF is often associated with mitral valve regurgitation (MR) which represents the most frequent valvular heart disease in an elderly population. Both entities are not only linked by a complex pathophysiologic interplay but also the incidence of both is expected to increase due to the demographic factors, aging and obesity.

AF is also a frequent comorbidity in patients with mitral valve regurgitation (MR) undergoing transcatheter edge-to-edge repair (TEER) with an incidence between 33-53% in randomized controlled trials. This is of particular clinical relevance due the complex and deleterious interaction between AF, MR, and left ventricular dysfunction. AF may pronounce left ventricular systolic dysfunction and enhance functional MR by mitral annulus dilatation (3). Current data has shown that AF contributes markedly to the course of functional MR and determines an unfavourable outcome. Catheter ablation (CA) for AF in the setting of congestive heart failure (CHF) has recently been demonstrated to be associated with a prognostic benefit in all stages of systolic left ventricular heart failure (heart failure with reduced ejection fraction, HFrEF). Although, the benefit of rhythm control in general, but also after surgical mitral valve repair (MVR) has been shown data in the setting of AF in TEER is sparse. In a recent multi-center observational cohort, the outcome of patients undergoing CA before or after TEER was investigated. As a proof of concept, it was shown that CA was associated with a prognostic benefit outweighing the negative influence of AF. Thus, the present study aims at investigating the prognostic relevance of CA following TEER in a randomized, prospective design.

Being tested
Usual Care, Pulmonary Vein Isolation
Keywords
Atrial fibrillation, Mitral valve regurgitation, Mitral valve repair, Catheter ablation
Medical subject headings
Atrial Fibrillation, Gastroesophageal Reflux, Mitral Valve Insufficiency

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Usual CareOther

    Usual care will consist of optimal AF and heart failure therapy based on guideline recommendations and local protocols and usage. Individual treatment decisions will be taken by the site teams, considering the approved instruction for use (IFU) of medical devices and summary of product characteristics (SmPC) of all approved medications in patients with AF. The choice of therapies and medications follows routine care in line with medical guidelines and local policies at the discretion of the treating physician and should be based on the individual medical status of each study patient.

  • Pulmonary Vein IsolationOther

    Patients randomised to AF ablation will undergo pulmonary vein isolation using a safe and effective technology within 30 days after randomisation.

Study groups in NCT07380932
Study groupRoleWhat they receive
Usual CareOtherNot described
Receives: Other: Usual Care
Pulmonary Vein IsolationOtherNot described
Receives: Other: Pulmonary Vein Isolation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Composite of cardiovascular complications related to AF

    It is defined as the time from randomisation to the first occurrence of (1) a composite of cardiovascular death, ischemic stroke or systemic embolic event,hospitalisation for heart failure (MACCE) and/or (2) death of any cause in a hierarchical order.

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  2. The Primary Safety Outcomes are the occurrence of AF ablation associated serious adverse events, hemorrhagic stroke, and non-serious adverse events of special interest.

    Serious Adverse Events (SAEs), including primary and secondary outcome parameters if based on clinical events, will be adjudicated by the independent Clinical Event Committee (CEC) according to standardised definitions given in the CEC charter.

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

Secondary outcomes (25)
  1. Time to individual components of first primary endpoint (MACCE)

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  2. Time to ECG documented AF recurrence

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  3. Time to ILR documented AF recurrence (AF burden sub-study)

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  4. Time to any documented AF recurrence

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  5. AF burden assessed in the AF burden (ILR) sub-study

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  6. Atrial arrhythmias assessed in the AF burden (ILR) sub-study

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  7. Other arrhythmias assessed in the AF burden (ILR) sub-study

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  8. Total number of ECG documented AF recurrences

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  9. Quality of life changes at 12 and 24 months compared to baseline (assessed by KCCQ-12)

    Measured: From Enrollment to month 24.

  10. Quality of life changes at 12 and 24 months compared to baseline (assessed by AFEQT)

    Measured: From Enrollment to month 24

  11. Quality of life changes at 12 and 24 months compared to baseline (assessed by EQ-5D-5L)

    Quality of life as assessed by the EuroQol Group 5-Dimension 5-Level questionnaire (EQ-5D-5L): The resulting score of the UK index ranges from 1 (for the best state) to - 0.285 (for the worst state).

    EQ5D- VAS: visual-analogue scale (0 worst to 100 best).

    Measured: From Enrollment to month 24.

  12. MoCA-test score changes at 12 months compared to baseline

    Measured: From Enrollment to month 12

  13. Heart failure progression (pro-BNP) at 12 months compared to baseline

    Measured: From Enrollment to month 12.

  14. Heart failure progression (NYHA) at 12 months compared to baseline

    Measured: From Enrollment to month 12

  15. ECHO: LA size assessed at 12 months, and if available at 24 months and further yearly FU visits as changes to baseline

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  16. ECHO: LA volume assessed at 12 months, and if available at 24 months and further yearly FU visits as changes to baseline

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  17. ECHO: LV size assessed at 12 months, and if available at 24 months and further yearly FU visits as changes to baseline

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  18. ECHO: LV function assessed at 12 months, and if available at 24 months and further yearly FU visits as changes to baseline

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  19. ECHO: MR grading assessed at 12 months, and if available at 24 months and further yearly FU visits as changes to baseline

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  20. Time to AF progression (documented as clinically evaluated)

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  21. Time to AF regression (documented as clinically evaluated)

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  22. Number of required re-M-TEER procedures over the entire follow-up duration

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  23. Number of total ablations procedures over the entire follow-up duration

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  24. Number of nights spent in hospital (per year)

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

  25. Number of ablation procedures per patient (including the index ablation procedure in the early AF ablation group)

    Measured: Throughout study completion, estimated at a median follow-up period of 33 months.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Feb 2026
  2. Study start1 Sep 2026 (estimated)
  3. Primary completion1 Sep 2031 (estimated)
  4. Study completion31 Mar 2032 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
956 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07380932
Sponsor's protocol ID
CABA-MiTRA-AFNET12-DZHK34
Status last verified
Sep 2026
First submitted
15 Jan 2026
Last updated
10 Sep 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A study testing Pulmonary Vein Isolation in people with Atrial Fibrillation (AF) and Mitral Valve (MV) Regurgitation, run by Atrial Fibrillation Network at 4 sites in Germany.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 10 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in Germany. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Vincent Beuger, PhD (+49 251 276001 64, caba-mitra@af-net.eu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Composite of cardiovascular complications related to AF (time frame: Throughout study completion, estimated at a median follow-up period of 33 months.). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Sep 2026.

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