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Myocardial InfarctionPhase 4DAPT-STEMINCT01459627

Randomized, Open Label Trial of 6 Months Versus 12 Months DAPT After Drug-Eluting Stent in STEMI

A Phase 4 study testing 6 months DAPT and 12 months DAPT in people with Myocardial Infarction and Cardiovascular Disease, run by Maasstad Hospital at 16 sites in 4 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

OBJECTIVE OF THE STUDY: To test the hypothesis that 6 months DAPT (Dual anti-platelet therapy) after second generation DES (Drug Eluting Stent) implantation in STEMI (ST elevation Myocardial Infarction) is not inferior to 12 months DAPT in terms of clinical outcomes (composite endpoint of all-cause mortality, any MI… Read more about this study

Who is it for?
Ages 18 to 85 years
Conditions the study is for
Myocardial Infarction, Cardiovascular Disease
What is being tested?
6 months DAPT and 12 months DAPT
Could I receive a placebo?
No, everyone receives an active treatment
How many people
1,100 participants
Where
16 sitesin 4 countries
Study dates
Dec 2011to Aug 2017
Phase
Phase 4
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 to 85 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • STEMI patients between 18-85 years who underwent primary PCI with DES implantation.

Who cannot join

  • Intolerance to Aspirin, Prasugrel, Ticagrelor, Heparin, Bivalirudin, Zotarolimus or Everolimus.
  • Known bleeding diathesis or known coagulopathy.
  • Planned elective surgical procedure necessitating interruption of dual antiplatelet therapy during the first 6 months after randomization.
  • History of stent thrombosis
  • DES in main left coronary artery
  • Active bleeding, known bleeding diathesis or known coagulopathy.
Show all 18Show fewer
  • Planned elective surgical procedure necessitating interruption of dual antiplatelet therapy during the first 6 months after randomization.
  • Oral anticoagulant therapy with Coumadin derivates
  • Malignancies or other comorbidity with a life expectancy of less than one year or that may result in protocol noncompliance
  • Pregnancy (present, suspected or planned) or positive pregnancy test (in women with childbearing potential a negative pregnancy test is mandatory)
  • Occurrence of death, myocardial infarction, stent thrombosis and target vessel or lesion revascularization during the first 6 months after inclusion.
  • Stroke or bleeding requiring discontinuation of DAPT during the first 6 months after inclusion.
  • Oral anticoagulant therapy
  • Registry
  • Intolerance to Prasugrel, Ticagrelor, Bivalirudin.
  • Known bleeding diathesis or known coagulopathy
  • Report Resolute Integrity Exclusion criteria
  • See exclusion criteria enrollment DAPT-STEMI protocol

Trial locations and contacts

16 sites in 4 countries.

16 sites in 4 countries

Netherlands8 sites
  • VU medisch Centrum

    Amsterdam, 1081 HV

  • Amphia ziekenhuis

    Breda, 4818CK

  • Medisch Spectrum Twente

    Enschede

  • Atrium MC Parkstad

    Heerlen

  • Maasstadhospital

    Rotterdam, 3079DZ

  • Erasmus MC

    Rotterdam

  • Haga Hospital

    The Hague, 2512VA

  • Isala Clinics

    Zwolle

Other trials in Netherlands

Poland6 sites
  • Amerykańskie Kliniki Serca

    Bielsko-Biala, 43316

  • Małopolskie Centrum Sercowo-Naczyniowe PAKS

    Chrzanów, 32500

  • Polsko-Amerykańskie Kliniki Serca

    Dąbrowa Górnicza, 41300

  • Polsko_Amerykanskei Kliniki Serca

    Kędzierzyn-Koźle

  • University Hospital in Krakow

    Krakow

  • Polsko_Amerykanskei Kliniki Serca

    Nysa

Other trials in Poland

Norway1 site
  • Oslo University Hospital

    Oslo

Other trials in Norway

Switzerland1 site
  • Hôpital Cantonal Fribourg

    Fribourg, 1708

Other trials in Switzerland

About this study

Official title: Prospective, Randomized, Open Label Trial of 6 Months vs. 12 Months Dual Antiplatelet Therapy After Drug-Eluting Stent Implantation In ST-elevation Myocardial Infarction

OBJECTIVE OF THE STUDY: To test the hypothesis that 6 months DAPT (Dual anti-platelet therapy) after second generation DES (Drug Eluting Stent) implantation in STEMI (ST elevation Myocardial Infarction) is not inferior to 12 months DAPT in terms of clinical outcomes (composite endpoint of all-cause mortality, any MI, any revascularization, stroke and major bleeding at 18 months after randomization).

The trial will incorporate two registers studying respectively the safety outcomes of Bivalirudin and Prasugrel combination and Bivalirudin and Ticagrelor combination at 2 and 30 days. Finally the trial design permits assessment of the clinical outcomes after primary PCI for treatment of STEMI with the new Resolute Integrity (Medtronic Santa Rosa Ca, USA) stent at 30 days and 6 months.

Read the detailed description

BACKGROUND OF THE STUDY: First generation DES (Drug Eluting Stents) have significantly reduced the restenosis rates compared to the BMS (Bare Metal Stents) but have raised concerns regarding higher rates and ongoing propensity for stent thrombosis. Based on these concerns current guidelines advocate dual antiplatelet therapy (DAPT, aspirin plus P2Y12 inhibitor) to be continued for up to 1 year after DES implantation. Large registries analyzing recent data now challenge these recommendations and suggest no increase in mortality or (late) stent thrombosis when DAPT is discontinued after 6 months.

STUDY DESIGN: This is a prospective, randomized, open-label trial testing the hypothesis that 6 months DAPT after second generation drug eluting stent (DES) implantation in STEMI is not inferior to 12 months DAPT in terms of clinical outcomes. Patients with STEMI undergoing primary PCI will be enrolled at presentation. Only those patients who are event-free (death, MI, ST, TVR/TLR or unscheduled revascularization with DES in the first 6 months and stroke or bleeding requiring discontinuation of DAPT) and on DAPT at 6 months after primary PCI will be randomized (1:1 fashion) between single (aspirin) versus dual antiplatelet therapy (aspirin plus P2Y12) for an additional 6 months (up to 12 months after primary PCI) and assessed at 18 months post randomization.

STUDY POPULATION: Patients between 18 and 85 years, presenting with STEMI undergoing PCI with DES implantation.

INTERVENTION: Patients, who are event-free and stil on DAPT at 6 months after primary PCI will be randomized (1:1 fashion) between single (aspirin) versus dual antiplatelet therapy (aspirin plus P2Y12) for an additional 6 months (up to 12 months after primary PCI).

PRIMARY STUDY PARAMETERS/OUTCOME OF THE STUDY:

DAPT STEMI trial Composite endpoint of all cause mortality, any MI, any revascularization, stroke, ST and Bleeding (TIMI) (net MACCE) at 18 months after randomization.

Registry Bivalirudin/Prasugrel and Bivalirudin/Ticagrelor All cause mortality, MI, Stroke, ST and bleeding (following BARC) at 2 and 30 days.

Report Resolute Integrity Primary endpoint of DAPT-STEMI, at 30 days and 6 months.

Being tested
6 months DAPT, 12 months DAPT
Keywords
DAPT- Dual Antiplatelet Therapy, STEMI
Medical subject headings
Myocardial Infarction, Cardiovascular Diseases, ST Elevation Myocardial Infarction

What participants receive

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

  • 6 months DAPTOther

    Also called ticagrelor, prasugrel, ASA

    Dual antiplatelet therapy will be stopped at randomisation to the 6 months DAPT group. Patients will be treated from 6 months onwards only with ASA.

  • 12 months DAPTOther

    Also called ticagrelor, prasugrel, ASA

    Dual antiplatelet therapy will be continued till 12 months after enrollment in the study

Study groups in NCT01459627
Study groupRoleWhat they receive
6 months DAPTActive comparatorDual antiplatelet therapy consisting of aspirin (ASA) and prasugrel or ticagrelor will be discontinued after randomisation.
Receives: Other: 6 months DAPT
12 months DAPTActive comparatorDual antiplatelet therapy consisting of aspirin (ASA) and prasugrel or ticagrelor will be continued till 12 months after enrollment in the study
Receives: Other: 12 months DAPT

What is being measured

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

  1. Net MACCE

    DAPT-STEMI trial: Composite endpoint of all cause mortality, any myocardial infarction (MI) , any revascularization, stroke and major bleeding (TIMI) (net MACCE) at 18 months after randomization

    Measured: 18 months

Secondary outcomes (41)
  1. All cause mortality, MI, Stroke, ST and bleeding

    Primary outcome of Registry: All cause mortality, MI, Stroke, ST and Bleeding(following BARC)at 2 days.

    Measured: 2 days

  2. All cause mortality, MACCE, TIMI

    DAPT-STEMI: All cause mortality, any MI, stroke, stent thrombosis (ST) and major bleeding (TIMI) at 9 months after randomization

    Measured: 9 months

  3. ST definite/probable

    DAPT-STEMI: ST definite/probable academic research consortium (ARC) definition at 9 months post randomization.

    Measured: 9 months

  4. all cause mortality

    DAPT-STEMI: All cause mortality at 9 months after randomization.

    Measured: 9 months

  5. Cardiac mortality

    DAPT-STEMI: Cardiac mortality at 9 months after randomization.

    Measured: 9 months

  6. MI

    DAPT-STEMI: Any MI at 9 months after randomization.

    Measured: 9 months

  7. Target vessel MI

    DAPT-STEMI: Target vessel MI at 9 months after randomization.

    Measured: 9 months

  8. Bleeding

    DAPT-STEMI: Bleeding at 9 months after randomization.

    Measured: 9 months

  9. stroke

    DAPT-STEMI: Stroke at 9 months after randomization.

    Measured: 9 months

  10. Target vessel revascularization

    DAPT-STEMI: Target vessel revascularization (TVR) at 9 months after randomization.

    Measured: 9 months

  11. Target lesion revascularization

    DAPT-STEMI: Target lesion revascularization (TLR) at 9 months after randomization.

    Measured: 9 months

  12. Target vessel failure

    DAPT STEMI: Target vessel failure (TVF) at 9 months after randomization.

    Measured: 9 months

  13. Target lesion failure

    DAPT-STEMI: Target lesion failure (TLF), at 9 months after randomization.

    Measured: 9 months

  14. net MACCE

    Primary endpoint of Report Resolute Integrity: Composite endpoint of all cause mortality, any myocardial infarction (MI) , any revascularization, stroke and major bleeding (TIMI) (net MACCE) at 30 days after randomization.

    Secondary endpoints of Report Resolute Integrity: Secondary endpoints of DAPT-STEMI at 30 days.

    Measured: 30days

  15. All cause mortality, MI, Stroke, ST and bleeding

    Primary outcome of registry: All cause mortality, MI,Stroke, ST and Bleeding (following BARC) at 30 days.

    Measured: 30 days

  16. net MACCE

    Primary endpoint of Report Resolute Integrity: Composite endpoint of all cause mortality, any myocardial infarction (MI) , any revascularization, stroke and major bleeding (TIMI) (net MACCE) at 6 months after randomization.

    Secondary endpoints of Report Resolute Integrity: Secondary endpoints of DAPT-STEMI at 6 monthss.

    Measured: 6 months

  17. All cause mortality, MACCE, TIMI

    DAPT-STEMI: All cause mortality, any MI, stroke, stent thrombosis (ST) and major bleeding (TIMI) at 18 months after randomization

    Measured: 18 months

  18. ST definite/probable

    DAPT-STEMI: ST definite/probable academic research consortium (ARC) definition at 18 months post randomization.

    Measured: 18 months

  19. All cause mortality

    DAPT-STEMI: All cause mortality at 18 months after randomization.

    Measured: 18 months

  20. Cardiac mortality

    DAPT-STEMI: Cardiac mortality at 18 months after randomization.

    Measured: 18 months

  21. MI

    DAPT-STEMI: Any MI at 18 months after randomization.

    Measured: 18 months

  22. Target vessel MI

    DAPT-STEMI: Target vessel MI at 18 months after randomization.

    Measured: 18 months

  23. Bleeding

    DAPT-STEMI: Bleeding at 18 months after randomization.

    Measured: 18 months

  24. Stroke

    DAPT-STEMI: Stroke at 18 months after randomization.

    Measured: 18 months

  25. Target vessel revascularization

    DAPT-STEMI: Target vessel revascularization (TVR) at 18 months after randomization.

    Measured: 18 months

  26. Target lesion revascularization

    DAPT-STEMI: Target lesion revascularization (TLR) at 18 months after randomization.

    Measured: 18 months

  27. Target vessel failure

    DAPT STEMI: Target vessel failure (TVF) at 18 months after randomization.

    Measured: 18 months

  28. Target lesion failure

    DAPT-STEMI: Target lesion failure (TLF), at 18 months after randomization.

    Measured: 18 months

  29. ST following ARC

    Registry: ST following ARC definition at 2 days

    Measured: 2 days

  30. ST following ARC

    Registry: ST following ARC definition at 30 days

    Measured: 30 days

  31. All cause mortality

    Registry: All cause mortality at 2 days

    Measured: 2 days

  32. All cause mortality

    Registry: All cause mortality at 30 days

    Measured: 30 days

  33. Cardiac mortality

    Registry: Cardiac Mortality at 2 days

    Measured: 2 days

  34. Cardiac Mortality

    Registry: Cardiac Mortality at 30 days

    Measured: 30 days

  35. All MI

    Registry: All MI at 2 days.

    Measured: 2 days

  36. All MI

    Registry: All MI at 30 days.

    Measured: 30 days

  37. Target vessel MI

    Registry: Target vessel MI at 2 days.

    Measured: 2 days

  38. Target vessel MI

    Registry: Target vessel MI at 30 days.

    Measured: 30 days

  39. Bleeding BARC

    Registry: Bleeding (BARC) at 2 days

    Measured: 2 days

  40. Bleeding (BARC)

    Registry: Bleeding (BARC) at 30 days

    Measured: 30 days

  41. Stroke

    Registry: Stroke at 2 days

    Measured: 2 days

Timeline

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

  1. First posted25 Oct 2011 (estimated)
  2. Study startDec 2011
  3. Primary completionAug 2017
  4. Study completionAug 2017

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 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
1,100 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01459627
Sponsor's protocol ID
DAPT-STEMI
Acronym
DAPT-STEMI
Status last verified
Sep 2017
First submitted
18 Oct 2011
Last updated
7 Sep 2017
Results posted
No
Data monitoring committee
Yes
Individual data sharing
No

Publications

  • Kedhi E, Delewi R, Fabris E, De Luca G, Hermanides RS, van den Ent M, Buszman P, Zijlstra F, Song YB, Gwon HC, Hahn JY. Duration of dual antiplatelet therapy after myocardial infarction: Insights from a pooled database of the SMART-DATE and DAPT-STEMI trials. Atherosclerosis. 2020 Dec;315:55-61. doi: 10.1016/j.atherosclerosis.2020.11.003. Epub 2020 Nov 9.

    PubMed 33227548
  • Postma W, Fabris E, Van der Ent M, Hermanides R, Buszman P, Von Birgelen C C, Cook S, Wedel H, De Luca G, Delewi R, Zijlstra F, Kedhi E. Resolute zotarolimus-eluting stent in ST-elevation myocardial infarction (resolute-STEMI): A prespecified prospective register from the DAPT-STEMI trial. Catheter Cardiovasc Interv. 2020 Mar 1;95(4):706-710. doi: 10.1002/ccd.28376. Epub 2019 Jul 3.

    PubMed 31268629
  • Kedhi E, Fabris E, van der Ent M, Buszman P, von Birgelen C, Roolvink V, Zurakowski A, Schotborgh CE, Hoorntje JCA, Eek CH, Cook S, Togni M, Meuwissen M, van Royen N, van Vliet R, Wedel H, Delewi R, Zijlstra F. Six months versus 12 months dual antiplatelet therapy after drug-eluting stent implantation in ST-elevation myocardial infarction (DAPT-STEMI): randomised, multicentre, non-inferiority trial. BMJ. 2018 Oct 2;363:k3793. doi: 10.1136/bmj.k3793.

    PubMed 30279197

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing 6 months DAPT and 12 months DAPT in people with Myocardial Infarction and Cardiovascular Disease, run by Maasstad Hospital at 16 sites in 4 countries.

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 1 inclusion and 18 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: finished, as of the sponsor's last update on 7 Sep 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 16 sites in Netherlands, Poland, Norway, Switzerland. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

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

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Net MACCE (time frame: 18 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01459627, which also lists 3 linked publications.

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 7 Sep 2017; AzTrials last refreshed its copy on 6 Nov 2026.

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