AzTrials
AzTrials

Left Atrial Appendage OcclusionPhase 3ARMYDA-AMULETNCT05554822

Head-to-head Comparison of Single Versus Dual Antiplatelet Treatment Strategy After Percutaneous Left Atrial Appendage Closure: a Multicenter, Randomized Study

A Phase 3 study testing Aspirin 100mg and Aspirin 100 mg OD plus clopidogrel 75 mg OD in people with Left Atrial Appendage Occlusion and Antiplatelet Therapy, run by Azienda Ospedaliero Universitaria Maggiore della Carita at 19 sites in Italy.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
Search all trials

Trial summary

The study will perform a randomized, head-to-head comparison between SAPT (aspirin) and DAPT (aspirin plus clopidogrel) after percutaneous LAA closure with implantation of the Amulet device (AbbottTM, Abbott Park, Illinois, US) in patients with AF. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Aspirin 100mg and Aspirin 100 mg OD plus clopidogrel 75 mg OD
Could I receive a placebo?
No, everyone receives an active treatment
How many people
574 participants
Where
19 sitesItaly
Study dates
14 Jun 2021to 31 Dec 2023
Phase
Phase 3
Are there results?
None posted in the registry

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

  • Men or women aged ≥18 years signing a specific informed consent
  • Patients with a planned percutaneous LAA closure;
  • Patients with documented non-valvular AF, irrespective of the type (paroxysmal, permanent, persistent), and CHA2DS2-VASc score ≥2
  • Patients suitable for treatment with aspirin and clopidogrel according to the Summaries of product characteristics (SmPCs);
  • Patients considered unsuitable for long-term oral anticoagulant therapy due to a high bleeding risk. Patients will be judged unsuitable for anticoagulation because of bleeding-prone comorbidities, history of previous bleeding (with or without anticoagulant treatment) or an expected low adherence to therapy.
  • Patient's availability to undergo the follow-up visits scheduled for the study
  • Negative pregnancy testing (if applicable), performed at the time of enrollment.

Who cannot join

  • CHADS-VAsc score 0-1
  • Requirement for on-going therapy with clopidogrel at the time of screening evaluation (e.g. current therapy with clopidogrel at the time of the screening evaluation will be an exclusion criterion)
  • Known hypersensitivity to the study drugs (aspirin or clopidogrel)
  • Patients deemed to be unsuitable for at least 6 months antiplatelet therapy (SAPT or DAPT) because of a recent (<1 month) major bleeding event
  • Planned oral anticoagulant therapy after the procedure
  • Moderate to severe mitral stenosis
Show all 19Show fewer
  • Mechanical heart prosthetic valve
  • Active endocarditis
  • Active bleeding
  • Myocardial infarction or percutaneous coronary intervention <6 months
  • Major surgery within one month
  • Intracranial neoplasm, aneurysm or arterio-venous malformation
  • Platelet count <50,000/μL
  • Recent stroke (<1 month)
  • Fibrinolytic therapy within 10 days
  • Baseline hemoglobin <9 g/dL
  • Pregnant woman
  • Breast-feeding
  • Women unavailable to use contraception during the study period

Trial locations and contacts

19 sites in 1 country.

Chiara Ghiglieno, MD contact

+3903213733336

chiara.ghiglieno@gmail.com

19 sites in 1 country

Italy19 sites, 19 recruiting
  • Azienda Ospedaliera Universitaria Policlinico Vittorio Emanuele Presidio Ospedaliero G. Rodolico

    Catania, 95123

    Carmelo Grasso, MD, +390957436420, melfat75@gmail.com

    Recruiting
  • Presidi Ospedalieri Riuniti ASL 6 Ciriè - Presidio Ospedaliero Riunito Sede di Ciriè

    Cirié, 10073

    Gaetano Senatore, MD, +3901192171, gsenatore@aslto4.piemonte.it

    Not yet recruiting
  • Azienda Ospedaliera Universitaria Careggi

    Florence, 50134

    Francesco Meucci, MD, +390557949167, francescomeu19@gmail.com

    Not yet recruiting
  • Centro Cardiologico Fondazione Monzino

    Milan, 20138

    Claudio Tondo, MD, +3902580021, claudio.tondo@cardiologicomonzino.it

    Not yet recruiting
  • ASST Grande Ospedale Metropolitano Niguarda

    Milan, 20162

    Jacopo Oreglia, MD, +39 0264442565, jacopoandrea.oreglia@ospedaleniguarda.it

    Recruiting
  • Azienda Ospedaliera dei Colli Monaldi

    Naples, 80131

    Paolo Golino, MD, +390817064239, paolo.golino@ospedalideicolli.it

    Recruiting
  • Azienda Ospedaliera Universitaria Federico II

    Naples

    Antonio Rapacciuolo, MD

    Not yet recruiting
  • Ospedale Maggiore della Carità

    Novara, 28100

    Giuseppe Patti, MD, +3903213975, chiara.ghiglieno@uniupo.it

    Chiara Ghiglieno, MD, +3903213733975, chiara.ghiglieno@gmail.com

    Recruiting
  • Clinica San Carlo

    Paderno Dugnano, 20037

    Bernardo Cortese, MD, +3902990381, bernardocortese.md@gmail.com

    Not yet recruiting
  • Azienda Ospedaliero-Universitaria di Parma

    Parma, 43126

    Luigi Vignali, MD, +390521702070, luvignali@gmail.com

    Not yet recruiting
  • Policlinico San Matteo

    Pavia, 27100

    Roberto Rordorf, MD, +390382501276, r.rordorf@smatteo.pv.it

    Not yet recruiting
  • Ospedale del Cuore G. Pasquinucci

    Pisa, 54100

    Sergio Berti, MD, +390585483675, berti@ftgm.it

    Recruiting
  • Ospedale di Rivoli

    Rivoli, 10098

    Francesco Tomassini, MD, +3901195511

    Not yet recruiting
  • Ospedale S. Eugenio - ASL Roma 2

    Roma, 00144

    Achille Gaspardone, MD, +390651002320, a_gaspardone@yahoo.it

    Not yet recruiting
  • Azienda Ospedaliera Universitaria Sassari

    Sassari, 07100

    Gavino Casu, MD, +390792061561, gavi.casu@tin.it

    Recruiting
  • Ospedale Mauriziano Umberto I

    Torino, 10128

    Stefano Grossi, MD, +390115081111, sgrossi@mauriziano.it

    Not yet recruiting
  • Villa Maria Pia Hospital

    Torino, 10132

    Elvis Brscic, MD, +390118967435, brscic@hotmail.com

    Not yet recruiting
  • Ospedale San Giovanni Bosco

    Torino, 10154

    Francesco Colombo, MD, +390112402295, giacomoboccuzzi@libero.it

    Not yet recruiting
  • Ospedale Sant'Andrea

    Vercelli, 13100

    Fabrizio Ugo, MD, +390161593111

    Not yet recruiting

Other trials in Italy

About this study

Official title: Head-to-head Comparison of Single Versus Dual Antiplatelet Treatment Strategy After Percutaneous Left Atrial Appendage Closure: a Multicenter, Randomized Study - ARMYDA-AMULET

The study will perform a randomized, head-to-head comparison between SAPT (aspirin) and DAPT (aspirin plus clopidogrel) after percutaneous LAA closure with implantation of the Amulet device (AbbottTM, Abbott Park, Illinois, US) in patients with AF. Primary outcome measure will be a net composite endpoint at 6 months including all-cause death, DRT, clinically relevant bleeding complications and ischemic events. The SAPT arm will receive aspirin alone up to 6 months, while the DAPT arm will receive DAPT for 3 months and then aspirin alone. Thus, between 3- and 6-month follow-up both groups will be given aspirin alone.

Read the detailed description

State of the art There is no clear evidence on optimal antiplatelet therapy after percutaneous left atrial appendage (LAA) closure in patients with atrial fibrillation (AF). There is a consensus supporting dual antiplatelet therapy (DAPT) with aspirin plus clopidogrel (without oral anticoagulation) after non-WATCHMAN device implantation. However, the use of DAPT after LAA closure was initially derived from other interventional settings (e.g. the antithrombotic approach used after coronary stenting) and available data essentially derive from observational (and often retrospective), non-randomized, studies. Due to the lack of robust and consolidated evidence, the type and duration of antiplatelet therapy after LAA closure are variable and often guided by the individual convincement of the treating physicians. Patients undergoing LAA closure are generally older and have multiple co-morbidities; thus, in these patients the risk of bleeding events is a major concern and antithrombotic therapy may strongly contribute to such risk. Single-center, observational data have suggested that a strategy with single antiplatelet therapy (SAPT, essentially aspirin, without P2Y12 inhibitor) is associated with similar risk of ischemic cerebral events and device-related thrombosis (DRT) and with a significant reduction of bleeding complications after the intervention with 68% reduction in risk of major bleeding (from 7.0% to 2.3%). However, a recent, retrospective evidence raised concerns regarding the effectiveness of SAPT in preventing DRT in this setting of patients. To date, no randomized study has evaluated whether an approach with SAPT, compared to DAPT, is associated with adequate protection from DRT/ischemic events and with decreased bleeding risk. We will address such issue in a randomized, prospective, multicenter study.

Aim of the study The study will perform a randomized, head-to-head comparison between SAPT (aspirin) and DAPT (aspirin plus clopidogrel) after percutaneous LAA closure with implantation of the Amulet device (AbbottTM, Abbott Park, Illinois, US) in patients with AF. Primary outcome measure will be a net composite endpoint at 6 months including all-cause death, DRT, clinically relevant bleeding complications and ischemic events. The SAPT arm will receive aspirin alone up to 6 months, while the DAPT arm will receive DAPT for 3 months and then aspirin alone. Thus, between 3- and 6-month follow-up both groups will be given aspirin alone. We consider that a 6-month follow-up would be more than enough to detect any possible difference between the two groups.

Primary objective:

To demonstrate that SAPT is not inferior to the current standard antiplatelet therapy (DAPT) after LAA closure regarding the cumulative incidence of the net composite endpoint, including death, thrombotic complications and bleeding events, at 6 months.

Secondary objectives:

Compared to DAPT, SAPT use is associated with a similar incidence of ischemic events and a significantly lower incidence of bleeding complications at 6 months.

Study design The study will be phase IV, prospective, multicenter, with 1:1 randomization, open-label, with parallel groups. Consecutive patients with AF undergoing percutaneous LAA closure with the Amulet device will be enrolled. Patients will be included regardless of the type of AF and of clinical indication for LAA closure. Approximately 15 centers with a consolidated experience in the procedure of percutaneous LAA closure will be included. Enrollment will be competitive; each center will include a maximum number of patients corresponding to the 20% of the global population. After the protocol approval, the high-volume centers (e.g. top implanting centers in Italy) will be asked to participate the study, in addition to the Coordinating Center.

Being tested
Aspirin 100mg, Aspirin 100 mg OD plus clopidogrel 75 mg OD
Keywords
left atrial appendage, left atrial appendage occlusion, atrial fibrillation, thromboembolic risk
Medical subject headings
Atrial Fibrillation

What participants receive

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

  • Aspirin 100mgDrug

    Single antiplatelet therapy with aspirin 100 mg OD for 6 months after the procedure

  • Aspirin 100 mg OD plus clopidogrel 75 mg ODDrug

    Double antiplatelet therapy with Aspirin 100 mg OD plus clopidogrel 75 mg OD for 3 months, followed by 3 months of single antiplatelet therapy with aspirin 100 mg OD.

Study groups in NCT05554822
Study groupRoleWhat they receive
Single antiplatelet therapy (SAPT)ExperimentalSingle antiplatelet therapy composed of aspirin 100 mg OD, organized as follows: Aspirin-naïve: aspirin 325 mg will be given 12-24 hours before the procedure and continued after the intervention at the dose of 100 mg OD up to 6-month follow-up. Aspirin-treated: periprocedural aspirin 100 mg OD will be given and continued up to 6-month followup.
Receives: Drug: Aspirin 100mg
Double antiplatelet therapy (DAPT)Active comparatorDouble antiplatelet therapy composed of aspirin 100 mg OD plus Clopidogrel 75 mg OD, organized as follows: Aspirin-naïve: aspirin 325 mg will be given 12-24 hours before the procedure and continued after the intervention at the dose of 100 mg OD up to 6-month follow-up. Clopidogrel will be given with a 300 mg loading dose of clopidogrel approximately 12 hours before the procedure and then clopidogrel 75 mg OD will be given from the day of intervention up to 3 months. At 3 months clopidogrel will be stopped. Aspirin-treated: periprocedural aspirin 100 mg OD will be given and continued up to 6-month followup. Clopidogrel will be given with a 300 mg loading dose of clopidogrel approximately 12 hours before the procedure and then clopidogrel 75 mg OD will be given from the day of intervention up to 3 months. At 3 months clopidogrel will be stopped.
Receives: Drug: Aspirin 100 mg OD plus clopidogrel 75 mg OD

What is being measured

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

  1. Primary endpoint:all-cause death, DRT (at 3- or 6-month TEE), ischemic stroke, systemic embolic events (SEE) or BARC classification bleeding ≥3.

    Primary endpoint will be the 6-month incidence in the two arms (SAPT versus DAPT) of the net composite endpoint including all-cause death, DRT (at 3- or 6-month TEE), ischemic stroke, systemic embolic events (SEE) or BARC classification bleeding ≥3. An independent board for clinical event adjudication and data safety monitoring will be created.

    Measured: 6 months

Secondary outcomes (5)
  1. Secondary endpoint: Device-related thrombosis

    Device-related thrombosis evaluated with transesophageal echocardiogram

    Measured: At 3 months and at 6 months

  2. Secondary endpoint: Any-cause death

    Any-cause death

    Measured: 6 months

  3. Secondary endpoint: ischemic stroke or systemic embolic events

    Incidence of ischemic stroke or systemic embolic events (SEE)

    Measured: At 3 months and at 6 months

  4. Secondary endpoint: Any bleeding

    Incidence of any bleeding

    Measured: At 3 months and at 6 months

  5. Secondary endpoint: BARC ≥3 bleeding

    Incidence of BARC classification bleeding ≥3

    Measured: At 3 months and at 6 months

Timeline

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

  1. First posted26 Sep 2022
  2. Study start14 Jun 2021
  3. Primary completion31 Dec 2023 (estimated)
  4. Study completion31 Dec 2023 (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 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
1:1 randomization
Masking
None (open label)
Enrolment
574 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05554822
Sponsor's protocol ID
2021-000730-34
Acronym
ARMYDA-AMULET
Status last verified
Sep 2022
First submitted
22 Sep 2022
Last updated
3 Oct 2022
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Aspirin 100mg and Aspirin 100 mg OD plus clopidogrel 75 mg OD in people with Left Atrial Appendage Occlusion and Antiplatelet Therapy, run by Azienda Ospedaliero Universitaria Maggiore della Carita at 19 sites in Italy.

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 7 inclusion and 19 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: status not confirmed, as of the sponsor's last update on 3 Oct 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 19 sites in Italy. 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.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Results are not available in the source record.

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

Contact Giuseppe Patti, MD (+3903213733597, chiara.ghiglieno@uniupo.it), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Primary endpoint:all-cause death, DRT (at 3- or 6-month TEE), ischemic stroke, systemic embolic events (SEE) or BARC classification bleeding ≥3. (time frame: 6 months). 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 3 Oct 2022.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in