Use of Adult Autologous Stem Cells in Treating People 2 to 3 Weeks After Having a Heart Attack (The Late TIME Study)
Information source: The University of Texas Health Science Center, Houston
ClinicalTrials.gov processed this data on August 23, 2015 Link to the current ClinicalTrials.gov record.
Condition(s) targeted: Left Ventricular Dysfunction
Intervention: Adult stem cells (Biological); Placebo (Biological)
Phase: Phase 2
Status: Completed
Sponsored by: The University of Texas Health Science Center, Houston Official(s) and/or principal investigator(s): Robert Simari, MD, Study Chair, Affiliation: Cardiovascular Cell Therapy Research Network
Summary
More than 1 million Americans suffer heart attacks each year. Although current treatments
are able to stabilize the condition of the heart, none is able to restore heart function as
it was prior to the heart attack. Adult stem cells, which are immature cells that can become
many different types of cells, may offer a potential means of reversing or preventing
permanent damage caused by a heart attack. Recent studies have shown promise in using adult
stem cells from bone marrow to reverse damage to the heart muscle caused by a heart attack,
but more research is needed to assess the safety and effectiveness of stem cell use and to
discover the best time to administer treatment. This study will evaluate the safety and
effectiveness of using adult stem cell infusions 2 to 3 weeks after a heart attack for
improving heart function in people who have had a recent heart attack and a common procedure
called a percutaneous coronary intervention (PCI).
Clinical Details
Official title: A Phase II, Randomized, Controlled, Double-Blind Pilot Trial Evaluating the Safety and Effect of Administration of Bone Marrow Mononuclear Cells Two to Three Weeks Following Acute Myocardial Infarction
Study design: Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
Primary outcome: Global Left Ventricular FunctionRegional Left Ventricular Function (Infarct Zone Wall Motion) Regional Left Ventricular Function (Border Zone Wall Motion)
Secondary outcome: Combined EndpointLeft Ventricular Mass End Diastolic Volume Index End Systolic Volume Index Infarct Volume
Detailed description:
Heart attacks are a leading cause of death for both men and women in the United States. A
heart attack occurs when blood flow to the heart is restricted, commonly due to a blood clot
that has formed in one of the coronary arteries. If the clot becomes large enough, blood
flow to the heart can be blocked almost completely and the heart muscle in that area can
suffer permanent injury or death. Although a PCI can be used to open up the blocked artery
and restore blood flow to the heart muscle, there may be a significant amount of heart
tissue that has been irreversibly damaged. Recent studies have shown that adult stem cells
from bone marrow may be able to improve heart function after a heart attack. These
specialized cells may have the ability to promote blood vessel growth, prevent cell death,
and transform themselves into a number of tissues, including muscle. After an acute heart
attack, a remodeling process is initiated in the heart in an attempt to compensate for
damaged areas. Consequently, the condition of the heart muscle several weeks after a heart
attack may differ considerably from the heart's condition during the acute setting. For some
patients, delaying the delivery of the stem cells until 2 to 3 weeks after a heart attack
may be better than initiating treatment during the acute phase. This study will evaluate the
safety and effectiveness of placing adult stem cells into injured heart muscle 2 to 3 weeks
after a heart attack for improving heart function in people who have had a recent heart
attack and a PCI.
Participation in this study will last 24 months. All participants will first undergo
baseline assessments that will include a medical history, a physical exam, an
electrocardiogram (ECG), blood draws, an echocardiogram, and a magnetic resonance imaging
(MRI) test. Participants will then be assigned randomly to receive stem cells or placebo
between 2 and 3 weeks after their heart attack. The morning of the stem cell or placebo
infusion, participants will undergo a blood draw and a bone marrow aspiration procedure of
the hip bone to collect the stem cells. Later the same day, either stem cells or placebo
will be infused through a catheter and into the damaged area of the heart.
For the first 24 hours after the infusion, participants will be asked to wear a small ECG
machine called a Holter monitor. Participants will also be asked to record their temperature
twice a day for a month after the infusion. Participants will return for follow-up visits at
Months 1, 3, 6, 12, and 24 and will repeat many of the baseline assessments.
Eligibility
Minimum age: 21 Years.
Maximum age: N/A.
Gender(s): Both.
Criteria:
Inclusion criteria
1. Patients at least 21 years of age.
2. Patients with first acute MI and subsequent successful primary percutaneous coronary
intervention (PCI) in an artery at least 2. 5 mm in diameter occurring two to three
weeks before recruitment.
3. No contraindications to undergoing cell therapy procedure within two to three weeks
following AMI and PCI.
4. Hemodynamic stability as defined as no requirement for IABP, inotropic or blood
pressure supporting medications.
5. Ejection fraction following reperfusion with PCI <=45% as assessed by
echocardiography.
6. Consent to protocol and agree to comply with all follow-up visits and studies.
7. Women of child bearing potential willing to use an active form of birth control.
Exclusion criteria
Patients will be excluded from the study if they meet any of the following conditions:
1. History of sustained ventricular arrhythmias not related to their AMI (evidenced by
previous holter monitoring and/or medication history for sustained ventricular
arrhythmias in patient's medical chart).
2. Require CABG or PCI due to the presence of residual coronary stenosis >70% luminal
obstruction in the non-infarct related vessel (Additional PCI of non-culprit vessels
may be performed prior to enrollment).
3. History of any malignancy within the past five years excluding non-melanoma skin
cancer or cervical cancer in-situ.
4. History of chronic anemia (hemoglobin (Hb) <9. 0 mg/dl).
5. History of thrombocytosis (platelets >500k).
6. History of thrombocytopenia in the absence of recent evidence that platelet counts
are normal
7. Known history of elevated INR (PT) or PTT.
8. Life expectancy less than one year.
9. History of untreated alcohol or drug abuse.
10. Currently enrolled in another Investigational drug or device trial
11. Previous CABG.
12. Previous MI resulting in LV dysfunction (LVEF <55%)
13. History of stroke or transient ischemic attack (TIA) within the past six months.
14. History of severe valvular heart disease (aortic valve area <1. 0 cm2 or >3+ mitral
regurgitation).
15. Pregnancy or breast feeding
16. Subjects with a known history of HIV, or has active hepatitis B, active hepatitis C,
or active tuberculosis (TB)
17. Patients with active inflammatory or autoimmune disease on chronic immunosuppressive
therapy.
18. Contraindications to cMRI.
19. Previous radiation to the pelvis with white blood cell count (WBC) and platelet
counts below hospital specific normal values.
20. Women child bearing potential not willing to practice an active form of birth
control.
21. Chronic liver disease that might interfere with survival or treatment with cell
therapy.
22. Chronic renal insufficiency as defined by a creatinine ≥2. 0 mg/dL or requires chronic
dialysis.
Locations and Contacts
University of Florida - Department of Medicine, Gainesville, Florida 32610, United States
Minneapolis Heart Institute Foundation, Minneapolis, Minnesota 55407, United States
Cleveland Clinic, Cleveland, Ohio 44195, United States
Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
Texas Heart Institute, Houston, Texas 77030, United States
Additional Information
Click here for more information on this study at the Cardiovascular Cell Therapy Research Network (CCTRN) Click here for more information on stem cells at the National Institutes of Health Stem Cell Basics Click here for the National Heart, Lung, and Blood Institute Click here for more information on this study at the Indiana Center for Vascular Biology and Medicine
Related publications: Traverse JH, Henry TD, Vaughan DE, Ellis SG, Pepine CJ, Willerson JT, Zhao DX, Simpson LM, Penn MS, Byrne BJ, Perin EC, Gee AP, Hatzopoulos AK, McKenna DH, Forder JR, Taylor DA, Cogle CR, Baraniuk S, Olson RE, Jorgenson BC, Sayre SL, Vojvodic RW, Gordon DJ, Skarlatos SI, Moyè LA, Simari RD; Cardiovascular Cell Therapy Research Network. LateTIME: a phase-II, randomized, double-blinded, placebo-controlled, pilot trial evaluating the safety and effect of administration of bone marrow mononuclear cells 2 to 3 weeks after acute myocardial infarction. Tex Heart Inst J. 2010;37(4):412-20. Gee AP, Richman S, Durett A, McKenna D, Traverse J, Henry T, Fisk D, Pepine C, Bloom J, Willerson J, Prater K, Zhao D, Koç JR, Ellis S, Taylor D, Cogle C, Moyé L, Simari R, Skarlatos S. Multicenter cell processing for cardiovascular regenerative medicine applications: the Cardiovascular Cell Therapy Research Network (CCTRN) experience. Cytotherapy. 2010 Sep;12(5):684-91. doi: 10.3109/14653249.2010.487900. Zierold C, Carlson MA, Obodo UC, Wise E, Piazza VA, Meeks MW, Vojvodic RW, Baraniuk S, Henry TD, Gee AP, Ellis SG, Moyé LA, Pepine CJ, Cogle CR, Taylor DA. Developing mechanistic insights into cardiovascular cell therapy: Cardiovascular Cell Therapy Research Network Biorepository Core Laboratory rationale. Am Heart J. 2011 Dec;162(6):973-80. doi: 10.1016/j.ahj.2011.05.024.
Starting date: July 2008
Last updated: July 7, 2015
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