Human Umbilical Cord Mesenchymal Stromal Cell Transplantation in Myocardial Ischemia (HUC-HEART Trial). A Study Protocol of a Phase 1/2, Controlled and Randomized Trial in Combination with Coronary Artery Bypass Grafting

Several human studies show positive signals, while research methods and sample sizes continue to develop.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Mesenchymal stem cells (MSCs), which may be obtained from the bone marrow, have been studied for more than a decade in the setting of coronary artery disease (CAD). Adipose tissue-derived MSCs have recently come into focus and are being tested in a series of clinical trials. MSC-like cells have also been derived from a variety of sources, including umbilical cord stroma, or HUC-MSCs. The HUC-HEART trail (ClinicalTrials.gov Identifier: NCT02323477) is a phase 1/2, controlled, multicenter, randomized clinical study of the intramyocardial delivery of allogeneic HUC-MSCs in patients with chronic ischemic cardiomyopathy. A total of 79 patients (ages 30-80) with left ventricle ejection fractions ranging between 25 and 45% will be randomized in a 2:1:1 pattern in order to receive an intramyocardial injection of either HUC-MSCs or autologous bone marrow-derived mononuclear cells (BM-MNCs) in combination with coronary arterial bypass grafting (CABG) surgery. The control group of patients will receive no cells and undergo CABG alone. Human HUC-MSCs will be isolated, propagated and banked in accordance with a cGMP protocol, whereas the autologous BM-MNCs will be isolated via aspiration from the iliac crest and subsequently process in a closed-circuit cell purification system shortly before cell transplantation. The cell injections will be implemented in 10 peri-infarct areas. Baseline and

Evidence level

Several human studies show positive signals, while research methods and sample sizes continue to develop.

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