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CompletedNCT00384982MYSTARUpdated Jan 22, 2010

Myocardial Stem Cell Administration After Acute Myocardial Infarction (MYSTAR) Study

A Phase 2 interventional study of Bone marrow-derived stem cells implantation in Myocardial Infarction, sponsored by Medical University of Vienna. Completed at 1 site in Austria. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2010-01-22.

Sponsored by Medical University of Vienna · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
116
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The MYocardial STem cell Administration after acute myocardial infaRction (MYSTAR) study is a multicenter, prospective, randomized, single-blind clinical trial designed to compare the early and late intracoronary or combined (percutaneous intramyocardial and intracoronary) administration of bone marrow-derived stem cells to patients after acute myocardial infarction with reopened infarct-related artery.

Read the detailed description

Previous data suggest that bone marrow-derived stem cells (BM-SCs) decrease the infarct size and beneficially affect the postinfarction remodeling.

The MYocardial STem cell Administration after acute myocardial infaRction (MYSTAR) study is a multicenter, prospective, randomized, single-blind clinical trial designed to compare the early and late intracoronary or combined (percutaneous intramyocardial and intracoronary) administration of BM-SCs to patients after acute myocardial infarction (AMI) with reopened infarct-related artery.

The primary endpoints are the changes in resting myocardial perfusion defect size and left ventricular ejection fraction (gated SPECT scintigraphy) 3 months after BM-SCs therapy.

The secondary endpoints relate to evaluation of 1) the safety and feasibility of the application modes, 2) the changes in left ventricular wall motion score index (transthoracic echocardiography), 3) myocardial voltage and segmental wall motion (NOGA mapping), 4) left ventricular end-diastolic and end-systolic volumes (contrast ventriculography), and 5) the clinical symptoms (CCS and NYHA) at follow-up.

Patients are randomly assigned into one of four groups, Group A: early treatment (21-42 days after AMI) with intracoronary injection; Group B: early treatment (21-42 days after AMI) with combined (intramyocardial and intracoronary) application; Group C: late treatment (3 months after AMI) with intracoronary delivery; and Group D: late treatment (3 months after AMI) with combined (intramyocardial and intracoronary) administration of BM-SCs. Besides the BM-SCs therapy, the standardized treatment of AMI is applied in all patients.

The MYSTAR trial is the first randomized trial to investigate the effects of the combined (intramyocardial and intracoronary) and the intracoronary mode of delivery of BM-SCs therapy in the early and late periods after AMI.

02

Conditions studied

  • Myocardial Infarction

Keywords

  • Bone marrow-derived stem cells
  • Acute myocardial infarction
03

In context

Myocardial Infarction

2,744 studies on the registry are indexed under Myocardial Infarction; 418 are open to participants now.

This study's enrollment of 116 is below the median of 148 across 1,595 interventional studies indexed under Myocardial Infarction.

Browse Myocardial Infarction studies →

Lead sponsor

Medical University of Vienna is the lead sponsor of 1,076 studies on the registry; 177 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

Inclusion criteria

  • Patient with a definitive AMI not earlier than 21 days and not later than 42 days before randomization (day 0 is the day of infarction)
  • Patients with open IRA without significant stenosis and TIMI flow 3, after successful percutaneous coronary intervention (PCI) of the IRA
  • Patients with two- or three-vessel disease might be included after adequate PCI if no significant coronary lesion can be seen in the non-infarct-related major vessels at the time of BM-SCs therapy
  • A persistent local new wall motion abnormality related to the recent infarct location.
  • Preserved myocardial viability, at least in the part of the recent infarction should be demonstrated by a preserved wall thickness and/or hypokinesia determined by transthoracic echocardiography or contrast ventriculography, and preserved tracer uptake determined by early and late resting Thallium myocardial scintigraphy or FDG-PET.
  • Global LVEF between 30 and 45%.
  • Written informed consent.

Exclusion criteria

Exclusion Criteria:

  • Previous heart surgery
  • Small posterior or inferior AMI
  • Previous MI at the same location
  • Regional wall motion abnormality outside the area involved in the index AMI
  • Ventricular thrombus
  • Severe valvular heart disease
  • Severe renal, lung and liver disease
  • Disease of the hematopoetic system
  • Hemoglobin level below 9 mg%
  • The patient cannot follow the study protocol
  • NYHA functional class IV at baseline
  • Postinfarct angina
  • Significant coronary stenosis in the IRA requiring repeated PCI at the time of the planned BM-SCs therapy
  • Significant coronary lesion in one or more major coronary vessels, requiring revascularization
  • Age lower than 18 years
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
116 participants (actual)

Study arms

  • Experimental
    A, B, C, D

    Early or late; percutaneous intracoronary or combined (intramyocardial and intracoronary) administration of BM-MNCs

    Procedure: Bone marrow-derived stem cells implantation

Interventions

  • ProcedureBone marrow-derived stem cells implantation

    percutaneous BM-derived cell therapy

    Also known as: early intracoronary delivery of BM-MNCs, late intracoronary delivery of BM-MNCs, early combined (intramyoc+intracor) delivery of BM-MNCs, late combined (intramyoc+intracor) delivery of BM-MNCs

06

What researchers measure

Primary outcomes

  1. Changes in resting myocardial perfusion defect size by gated SPECT scintigraphy 3-6 months after the percutaneous intracoronary or combined bone marrow-derived stem cells therapy.

    Time frame: 3-6 month

  2. Changes in global left ventricular ejection fraction by gated SPECT scintigraphy 3-6 months after the percutaneous intracoronary or combined bone marrow-derived stem cells therapy.

    Time frame: 3-6 month

Secondary outcomes

  1. The feasibility of the bone marrow-derived stem cells delivery modes, determined by the rates of acute and subacute complications

    Time frame: in-hospital

  2. Change in the left ventricular wall motion score index, measured by transthoracic echocardiography

    Time frame: 3-6 month

  3. Change in the myocardial voltage as a parameter of myocardial viability obtained by NOGA endocardial mapping, with segmental wall motion expressed by local linear shortening on NOGA mapping

    Time frame: 3-6 month

  4. Change in left ventricular end-diastolic and end-systolic volumes by contrast ventriculography

    Time frame: 3-6 month

  5. Assessment of the clinical symptoms (CCS and NYHA) of the patients

    Time frame: 3, 6 and 12 month

  6. The safety of the bone marrow-derived stem cells delivery modes, expressed as the rates of long-term major adverse cardiac events (MACE: death, target vessel revascularization and non-fatal AMI)

    Time frame: 3, 6 and 12 month

07

Study locations

1 site
  • Department of Cardiology, Medical University of Vienna
    Vienna, 1090, Austria
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 22, 2010, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00384982
Lead sponsor
Medical University of Vienna
First posted
Oct 6, 2006
Start date
Jan 2005
Primary completion
Aug 2008
Completion
Aug 2008
Last update
Jan 22, 2010

Study contacts

Irene Lang, MD
study director · Department of Cardiology, Medical University of Vienna
Dietmar Glogar, MD
study chair · Department of Cardiology, Medical University of Vienna
Mariann Gyongyosi, MD
principal investigator · Department of Cardiology, Medical University of Vienna

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2008. You cannot join it, but the record below documents what was studied.

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