Clinical trial NCT01350310: Safety and Efficacy Study of Intramyocardial Stem Cell Therapy in Patients With Dilated Cardiomyopathy
Official title: Intramyocardial Stem Cell Therapy in Patients With Dilated Cardiomyopathy
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Dilated Cardiomyopathy
Chronic Heart Failure
Keywords: Heart failure
Dilated cardiomyopathy
Stem cells
Lead sponsor: University Medical Centre Ljubljana
Sponsor class: OTHER
Collaborators: name: The Methodist Hospital Research Institute
name: Stanford University
First posted: 2011-05-09
Enrollment: 110
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: 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.

1. To evaluate safety and efficacy of intramyocardial stem cell therapy in patients with non-ischemic dilated cardiomyopathy.
2. To directly compare clinical effects of intracoronary and intramyocardial stem cell delivery.

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.

1. At 1 year, intramyocardial stem cell therapy will be associated with improved left ventricular ejection fraction, reduced left ventricular dimensions, improved exercise capacity and reduced levels of NT-proBNP.
2. Beneficial effects of intramyocardial stem cell therapy will be superior to those observed with intracoronary stem cell delivery.


Eligibility criteria: Inclusion Criteria:

* Established dg. of dilated CMP (defined according to ESC position statement - absence of any stenotic lesions on coronary angiography, no congenital heart disease, no primary valve disease on echocardiography, and no history of hypertension or alcohol abuse1)
* left ventricular ejection fraction \< 30%
* NYHA functional class III or IV for at least 3 months before referral
* Optimal medical management for at least 6 months

Exclusion Criteria:

* Left ventricular aneurysm or thrombus
* Hematologic disease
* Multiorgan failure
* Active malignancy

Primary outcomes:
measure: Changes in left ventricular ejection fraction and dimensions
timeFrame: 1 year
Secondary outcomes:
measure: Changes in exercise capacity
timeFrame: 1 year
measure: Change in NT-proBNP levels
timeFrame: 1 year
Other outcomes:
Locations:
city: Ljubljana
country: Slovenia
facility: UMC Ljubljana
Study officials:
References:
citation: 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.
citation: 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.
citation: 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.
citation: 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.