Safety Study of AMI MultiStem® to Treat Heart Attacks

Healios

Status and phase

Completed

Phase 1

Conditions

Acute Myocardial Infarction

Treatments

Biological: AMI MultiStem®

Study type

Interventional

Funder types

Industry

Identifiers

NCT00677222

AMI-07-001

Details and patient eligibility

About

The purpose of this study is to determine if escalating doses of AMI MultiStem® delivered by catheter can safely be given to patients that have had a recent heart attack treated with stent implantation.

Full description

The mortality rates associated with acute myocardial infarction (AMI) have significantly decreased over the past 2 decades. Beginning first with thrombolytic therapy for AMI, and more recently with growing acceptance and availability of primary percutaneous coronary intervention (PCI) for ST-elevation AMI, the mortality rates of this devastating ischemic event have decreased from almost 15% in clinical trials in the late 1980's to <5% in recent primary percutaneous coronary intervention trials. Though AMI-related mortality has been reduced, AMI survival is often accompanied by significant loss of function that may lead to subsequent treatments, congestive heart failure (CHF) and reduction in quality of life. A cell therapy that could reduce the damage associated with AMI and positively affect heart function would provide substantial benefits to the AMI patient.

Enrollment

25 patients

Sex

All

Ages

18 to 80 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Patients of either sex 18-85 years of age
Women of childbearing potential or less than 2 years postmenopausal agree to use of adequate contraception during the study
Patients with the first time diagnosis of ST elevation myocardial infarction
Acute myocardial infarction (ST elevation in at least two leads >0.2 mV in V1, V2 or V3 or >0.1 mV in other leads), treated by one of the following: either
Acute PCI with stent implantation
With thrombolysis within 12 hr of symptom onset followed by PCI with stent implantation within 24 hr after Thrombolysis
Maximal creatine kinase elevation >400 U/l with significant membrane-bound fraction (>6%)or troponin >2X ULN
Decreasing levels of CK/CK-MB or troponin following reperfusion
Successful acute PCI/stent implantation (residual stenosis visually <30% and TIMI flow >2). Absence of severe disorder of the microcirculation (e.g. pulsatile flow pattern, systolic flow reversal) at the time of administration of the trial therapy
Significant regional wall motion abnormality in left ventricular angiogram or transthoracic echocardiogram ≤48 hours post PCI
LVEF between 30 and 45% by LV gram after the primary PCI or transthoracic echocardiogram ≤48 hours post PCI
Willing and able to comply with the scheduled visits, treatment, laboratory tests and other study related procedures.
Signed informed consent

Exclusion criteria

Prior cardiovascular history
Mechanical complications of the index acute myocardial infarction including but not limited to rupture of the mitral valve with resultant development of mitral regurgitation, rupture of the left ventricular free wall and rupture of the interventricular septum
Pregnant or lactating
Known allergy to contrast agents
Known allergy or religious objections to bovine or porcine products
History of malignancy of any type except non-melanoma skin cancer
Presence of major hematological conditions or laboratory abnormalities (low hemoglobin (<10 gm/dl), - WBC (<3,000 cells/mm2) or platelet count (<100,000 cells/mm3))
Prothrombin time (PT) > 1x ULN
Partial thromboplastin time (PTT) > 1x ULN
Presence of chronic systemic inflammatory disorders that requires ongoing therapy
Previous autologous, allogeneic bone marrow or peripheral stem cell transplant
Prior solid organ transplantation
Immune system compromise including but not limited to history of human immunodeficiency virus (HIV), hepatitis B (HBV) and hepatitis C (HCV) infection.
Prior participation in any other study involving investigational pharmacological agents(s), devices or marketed products within 30 days prior to planned AMI MultiStem® administration
Life expectancy of six months or less
Current alcohol or substance abuse
Ongoing systemic infection
Renal function: Serum creatinine >2 mg/dL or creatinine clearance ≤50 mL/min
Hepatic function: Screening ALT and AST ≥3x upper limit of normal for the laboratory or total bilirubin ≥2.0 mg/dL (exception: acceptable if patient is identified with pre existing condition e.g. Gilbert's disease that will contribute to baseline elevations of bilirubin)
Other serious medical or psychiatric illness that, in the investigator's opinion, would not permit the patient to be managed according to the protocol.