E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Acute Myocardial Infarction (AMI):
"First STEMI submitted to elective primary PCI with successful revascularization by PCI (TIMI = 3), but intermediate-high risk of HF development (infarct size by MRI>25%)" |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Cardiovascular Diseases [C14] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objective consists in the evaluation of the safety of the treatment:
- In the dose escalation phase the principal objective is to evaluate the safety and feasibility of the procedure (MRI and administration method) that is not part of the routine care of a heart attack, and confirm that the target dose can be administered intracoronary in a safe way.
The following will be assessed:
o Deaths from any cause within 30 days
o Adverse Events (AEs) of any nature observed from magnetic resonance imaging (MRI) of patient inclusion to up to 7 days after treatment administration.
- In the randomization phase, the Major Adverse Cardiac Events (MACE) will be assessed for the first 30 days of treatment administration, defined as death from any cause, new myocardial infarction, hospitalization for failure heart, ventricular tachycardia (VT), ventricular fibrillation (VF) and stroke. |
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E.2.2 | Secondary objectives of the trial |
FOLLOW-UP SAFETY:
MACE in the first 6 months and at 12 months. Death from any cause. Death from cardiovascular cause. General monitoring of all serious adverse events from any cause.
EFFICACY:
Evolution of infarct (morphology): % change in MRI at 6 and 12 months after treatment administration vs. screening MRI and 1 month MRI. Compare CSC versus placebo. Evolution of edema: % change in MRI at 1 month after treatment administration vs screening MRI. Evolution of the biomechanical parameters by MRI: % changes of MRI at 6 and 12 months of administration of the treatment vs screening MRI and 1 month MRI. Compare CSC vs placebo.
CLINICAL PARAMETERS OF ANALYSIS: ProBNP curve (one day prior to 2nd hemodynamic assessment, 6 months, 12 months). CRP (one day prior to 2nd hemodynamic assessment, at discharge, 1 month). 6 minute walking test at discharge, 6 and 12 months. NYHA at discharge, 6 and 12 months. MLHFQ at discharge, 6 and 12 months. Hospital admission for HF. CCV mortality. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Initial clinical pre-screening:
1. Males and females > or =18 years and < or = 80 years
2. Patients who present a STEMI according to the universally accepted definition found in the STEMI management guide of the European Society of Cardiology
3. Killip < or = 2 on admission
4. Successful revascularization by PCI (TIMI = 3) within 12 hours after the onset of symptoms.
5. Ejection Fraction (EF) ≤50% by echocardiography performed more than 48 hours after hospital admission and before the screening MRI done between day 3 and day 5 after infarction.
6. Bare-metal or drug-eluting stents of second generation (including new second generation stents, e.g. biolimus, novolimus, and bioreabsorbable stents) at coronary revascularization by PCI.
MRI analysis:
7. EF < or =45% (day 3 to 5 after STEMI)
8. Infarct size in LV analyzed by MRI > or = 25% of LV mass
Patients with infarct size ≥ 25% of LV and EF slightly bigger than 45% could be included after evaluation and approval by the Study Coordinators and the Sponsor.
The presence of microvascular obstruction at MRI is permitted (needs to be indicated). Additional percutaneous interventions for additional coronary arteries revascularization are allowed if done 24h before the inclusion-MRI.
New catheterization for the administration of cells:
9. The infarct culprit coronary artery is adequate for treatment administration and the procedure is technically feasible.
10. The patient is stable and in adequate clinical condition to undergo the procedure. |
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E.4 | Principal exclusion criteria |
1. Participation in another clinical trial in the last 30 days
2. Previous allogeneic transplant (blood transfusion are allowed) or treated with cell or gene therapy
3. Previous Q-wave infarction
4. Significant valve disease, relapsing pericarditis, history of cardiac tamponade, cardiomyopathies
5. Severe stenotic lesions (>90%) in a coronary vessel with size >2.75 mm not treated by PCI at least 24 hours before the baseline MRI study
6. Previous EF = or < 45%, NYHA > 2 or hospital admission for heart failure before STEMI
7. Sustained VT that does not revert with treatment or requires >6 hours to be controlled in the 48 hours prior to the product administration procedure
8. Complete atrioventricular blockade, or acute left bundle branch block in the 48 hours prior to the product administration procedure
9. History of cardioembolic disease
10. Platelets <100,000 and/or Hb<8.5g/dL
11. Acute or chronic renal failure with creatinine ≥2.5 mg/dl or creatinine clearance ≤30 mL/min
12. Infection with systemic involvement
13. Cancer disease, except that eradicated at least 5 years before inclusion, and without receiving radiotherapy on chest. It is permitted coetaneous non-melanoma neoplasms completely eliminated (at any time) and that do not require subsequent chemotherapy or radiotherapy on chest.
14. Child-Pugh's C stage chronic liver disease
15. Baseline respiratory failure requiring oxygen at home
16. Uncontrolled hypertension at screening despite treatment (systolic blood pressure [BP] ≥ 180 and/or diastolic BP ≥ 110)
17. Very poorly controlled diabetes (Hb1Ac ≥8.5 g/dL) or with serious target organ lesion (peripheral vascular disease requiring revascularization or non revascularizable)
18. History of autoimmune disease
19. Primary or acquired immune deficiency or immunosuppressant treatment (including treatments with immunosuppressants in the previous three months or foreseeable need for those treatments during the course of the study).
20. Women who are pregnant or breastfeeding or women of childbearing potential who do not agree to use contraceptives during the study period
21. Life expectancy of less than 2 years for any reason.
22. Allergy to amynoglicoside antibiotics or HSA hypersensitivity
23. Contraindications preventing the use of Magnetic Resonance Imaging: Pacemaker, Implantable cardioverter-defibrillator (ICD), known reaction to gadolinium, claustrophobia, cochlear implants |
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E.5 End points |
E.5.1 | Primary end point(s) |
Primary Endpoints: Safety variables
- Any AE
- MACE
- Global mortality
- Cardiovascular mortality
Daily assessment of safety will be performed during the hospitalization phase; monthly evaluations will be performed during the first 6-months of follow-up and then quarterly assessments thereafter until the 12 months of the clinical trial.
Dose-escalation phase: For the first 6 patients who comprise the dose-escalation phase of this protocol, the primary evaluation will be safety from the screening MRI performed and during the first week after administration of the therapy (AE and global mortality from any cause). Secondary evaluations will be identical to those at the randomized phase. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Daily assessment of safety will be performed during the hospitalization phase; monthly evaluations will be performed during the first 6-months of follow-up and then quarterly assessments thereafter until the 12 months of the clinical trial. |
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E.5.2 | Secondary end point(s) |
Efficacy Variables:
1. Evolution of infarct size comparing the percentage of change with respect to the LV. The analysis will be performed by MRI at 6 and 12 months after treatment administration versus screening MRI and 1 month MRI.
2. Evolution of edema: comparing the percentage of change at 1 month after treatment administration versus edema at the moment of the screening. The analysis will be by MRI.
3. Evolution of the biomechanical parameters comparing the percentage of changes at 6 and 12 months after administration of the treatment versus the ones at the moment of the screening or at month 1 after the administration. The analysis will be by MRI.
All analysis will be performed by comparing the population treated with CSCs versus the one treated with placebo.
Clinical Parameters:
1. Nt-proBNP or BNP curve (according to the usual practice in each hospital). Comparing the Nt-proBNP or BNP levels just before treatment administration and at 6 and 12 months after treatment.
2. CRP: comparing the CRP levels just before treatment administration, at hospital discharge, 7 days after treatment and 1 month after product administration.
3. 6 minute walking test at hospital discharge and 6 and 12 months after treatment
4. NYHA classification at hospital discharge and 3, 6 and 12 months after treatment
5. MLHFQ at hospital discharge and 6 and 12 months after treatment
6. Hospital admission for HF during the 12 months of the clinical trial will be registered.
7. Follow-up of all the cases of cardiovascular mortality during the whole clinical trial.
All analysis will be performed by comparing the population treated with CSCs versus the one treated with placebo. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
First month and 6 and 12 months. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | Yes |
E.7.1.1 | First administration to humans | Yes |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 1 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 7 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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LVLS (Last Visit of the Last Subject) |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 2 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 2 |