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| Name | Class |
|---|---|
| The Methodist Hospital Research Institute | OTHER |
| Stanford University | OTHER |
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BACKGROUND. In patients with non-ischemic dilated cardiomyopathy, intracoronary stem cell transplantation has been shown to improve exercise capacity, reduce ventricular remodelling and improve 1-year survival. Pre-clinical data demonstrate that stem cell effects on the diseased heart can be further enhanced by direct intramyocardial delivery route.
AIMS.
METHODS. Of 60 patients with dilated cardiomyopathy, 30 will be randomized to intramyocardial transplantation of CD34+ cells (Study Group), and 30 will receive intracoronary stem cell therapy (Control Group). In both groups peripheral blood stem cells will be mobilised by daily subcutaneous injections of filgrastim; CD34+ cells will be collected via apheresis and labelled with technetium. In the Study Group electromechanical mapping will be used to identify viable myocardium and intramyocardial injections in the target areas will be performed with NOGA catheter. In the Control group patients will undergo myocardial perfusion scintigraphy and CD34+ cells will be injected intracoronary in the artery supplying segments of reduced viability. Patients will be followed for 1 year. Primary endpoints will include changes in left ventricular ejection fraction and left ventricular dimensions (measured by echocardiography). Secondary endpoints will include changes in exercise capacity and changes in NT-proBNP values.
HYPOTHESES.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Intramyocardial Injections | Experimental | Peripheral blood stem cells will be mobilised by daily subcutaneous injections of filgrastim; CD34+ cells will be collected via apheresis and labelled with technetium. Electromechanical mapping will be used to identify viable myocardium and intramyocardial injections in the target areas will be performed with NOGA catheter. Nuclear imaging for quantitation of myocardial retention rates of labeled cells will be performed at 2 and 18 hours after the procedure. |
|
| Intracoronary Injections | Active Comparator | Peripheral blood stem cells will be mobilised by daily subcutaneous injections of filgrastim; CD34+ cells will be collected via apheresis and labelled with technetium. Patients will undergo myocardial perfusion scintigraphy and CD34+ cells will be injected intracoronary in the artery supplying segments of reduced viability. Nuclear imaging for quantitation of myocardial retention rates of labeled cells will be performed at 2 and 18 hours after the procedure. |
|
| Ischemic heart disease | Active Comparator | Peripheral blood stem cells will be mobilised by daily subcutaneous injections of filgrastim; CD34+ cells will be collected via apheresis and labelled with technetium. Electromechanical mapping will be used to identify viable myocardium and intramyocardial injections in the target areas will be performed with NOGA catheter. Nuclear imaging for quantitation of myocardial retention rates of labeled cells will be performed at 2 and 18 hours after the procedure |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Intramyocardial injection | Procedure | Electromechanical mapping will be used to identify viable myocardium (unipolar voltage >6.9 mV) and intramyocardial injections in the target areas will be performed with NOGA catheter (25 injections of 0.3 cc). |
| Measure | Description | Time Frame |
|---|---|---|
| Changes in left ventricular ejection fraction and dimensions | Standard 2D and Doppler echocardiography will be performed at baseline, and repeated at 1 month, 3 months, 6 months and 1 year after the procedure. Left ventricular ejection fraction will be measured using Simpson's method and left ventricular end-systolic and end-diastolic dimensions will be measured according to standard echocardiography protocol. | 1 year |
| Measure | Description | Time Frame |
|---|---|---|
| Changes in exercise capacity | Exercise capacity will be evaluated with 6-minute walk test at baseline, and again at 1,3,6 and 12 months after the procedure. | 1 year |
| Change in NT-proBNP levels |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| UMC Ljubljana | Ljubljana | 1000 | Slovenia |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 25459687 | Derived | Lezaic L, Socan A, Poglajen G, Peitl PK, Sever M, Cukjati M, Cernelc P, Wu JC, Haddad F, Vrtovec B. Intracoronary transplantation of CD34(+) cells is associated with improved myocardial perfusion in patients with nonischemic dilated cardiomyopathy. J Card Fail. 2015 Feb;21(2):145-52. doi: 10.1016/j.cardfail.2014.11.005. Epub 2014 Nov 18. | |
| 25097199 |
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| Intracoronary injection | Procedure | Patients will undergo myocardial perfusion scintigraphy for myocardial viability assessment. Microcatheter will be placed in the mid segment of the coronary artery supplying the segments of reduced tracer accumulation and repeated intracoronary injections of stem cell solution will be performed. |
|
| Intramyocardial injection | Procedure | Procedure/Surgery: Intramyocardial injection Electromechanical mapping will be used to identify viable myocardium (unipolar voltage >6.9 mV) and intramyocardial injections in the target areas will be performed with NOGA catheter (25 injections of 0.3 cc). |
|
Plasma levels of NT-proBNP will be measured at baseline, and again at 1, 3, 6 and 12 months after the procedure.
| 1 year |
| Poglajen G, Sever M, Cukjati M, Cernelc P, Knezevic I, Zemljic G, Haddad F, Wu JC, Vrtovec B. Effects of transendocardial CD34+ cell transplantation in patients with ischemic cardiomyopathy. Circ Cardiovasc Interv. 2014 Aug;7(4):552-9. doi: 10.1161/CIRCINTERVENTIONS.114.001436. Epub 2014 Aug 5. |
| 24030420 | Derived | Vrtovec B, Poglajen G, Lezaic L, Sever M, Socan A, Domanovic D, Cernelc P, Torre-Amione G, Haddad F, Wu JC. Comparison of transendocardial and intracoronary CD34+ cell transplantation in patients with nonischemic dilated cardiomyopathy. Circulation. 2013 Sep 10;128(11 Suppl 1):S42-9. doi: 10.1161/CIRCULATIONAHA.112.000230. |
| 23065358 | Derived | Vrtovec B, Poglajen G, Lezaic L, Sever M, Domanovic D, Cernelc P, Socan A, Schrepfer S, Torre-Amione G, Haddad F, Wu JC. Effects of intracoronary CD34+ stem cell transplantation in nonischemic dilated cardiomyopathy patients: 5-year follow-up. Circ Res. 2013 Jan 4;112(1):165-73. doi: 10.1161/CIRCRESAHA.112.276519. Epub 2012 Oct 12. |
| ID | Term |
|---|---|
| D002311 | Cardiomyopathy, Dilated |
| D006333 | Heart Failure |
| ID | Term |
|---|---|
| D006332 | Cardiomegaly |
| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
| D009202 | Cardiomyopathies |
| D000083083 | Laminopathies |
| D030342 | Genetic Diseases, Inborn |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
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