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Serial Infusions of Allogeneic Mesenchymal Stem Cells in Cardiomyopathy Patients With Left Ventricular Assist Device

A Randomized, Double-Blind, Placebo-Controlled Phase IIa Study of the Safety and Efficacy of Intravenous Delivery of Allogeneic Mesenchymal Stem Cells in Cardiomyopathy Patients and Implanted Left Ventricular Assist Device

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03925324
Acronym
STEM-VAD
Enrollment
4
Registered
2019-04-24
Start date
2019-05-03
Completion date
2021-08-16
Last updated
2022-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Ischemic Heart Disease, Non-ischemic Cardiomyopathy

Brief summary

A study to assess the safety and preliminary efficacy of serial intravenous dose of Allogeneic Mesenchymal Bone Marrow Cells in subjects with heart failure and implanted left ventricular assist devices.

Detailed description

A double-blind, placebo-controlled, single-center, randomized study to assess the safety and preliminary efficacy of a three serial intravenous doses of allogeneic mesenchymal bone marrow cells to subjects with heart failure and implanted left ventricular assist devices.

Interventions

BIOLOGICALHuman Allogeneic Mesenchymal Bone Marrow Cells (aMBMC)

Allogeneic Mesenchymal Bone Marrow Cells (aMBMC) 1.5 million cells/kg

OTHERPlacebo

1.5 mL/kg Lactated Ringer's Solution

Sponsors

Medstar Health Research Institute
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Age ≥18 years. 2. Advanced Heart Failure 3. Advanced HF defined as HF requiring LVAD implantation and deemed stable on his/her LVAD. 4. On stable medical therapy (per the discretion of the treating physician) including beta-blockers, ACE-inhibitors, angiotensin receptors blockers, angiotensin receptor neprilysin inhibitor, mineralocorticoid receptor antagonists, isosorbide, hydralazine, and mineralocorticoid receptor antagonists) and optimized pump speed for at least a month prior to randomization. 5. HS-CRP level≥2 mg/l. 6. NYHA class II-III symptoms. 7. Ability to understand and provide signed informed consent. 8. Reasonable expectation that patient will receive standard post-treatment care and attend all scheduled safety follow-up visits

Exclusion criteria

1. Women of childbearing potential. Postmenopausal women or women with permanent contraception method (defined as total hysterectomy) will not be excluded. 2. History of debilitating stroke (modified Rankin Score \> 3) within 3 months. 3. The likelihood of requirement of cardiac surgery during the study period. 4. Presence of clinically significant, uncorrected left sided valvular heart disease, active acute myocarditis, or uncontrolled hypertension defined as Persistently elevated mean arterial blood pressure (\>100 mmHg). Echocardiography within 12 months of screening. Patients can be re-evaluated, at the discretion of the investigator. 5. QTc \>550 ms (in the absence of bundle branch block, interventricular conduction delay or ventricular pacing). Electrocardiogram (ECG) within 60 days. 6. History of cardiac arrest within 3 months. 7. Hypertrophic or infiltrative cardiomyopathy. 8. Considered or listed for organ transplantation or history of organ transplantation 9. Illness other than HF with life expectancy less than 12 months. 10. Enrolled in an interventional trial or received an experimental drug or device within 30 days of randomization. 11. Left ventricular assist device implantation \>2 years prior to enrollment. 12. Biventricular assist device (Bi-VAD) support. 13. Severe COPD defined by FEV1\<1L, FEV1/FVC\<70% within 12 months if known history of COPD, otherwise FEV1\<1L, FEV1/FVC\<70% within 24 months 14. Uncontrolled seizure disorder. 15. Clinically significant hematologic, hepatic, or renal impairment as determined by screening clinical laboratory tests within the last 30 days: Liver disease = ALT or AST \> 3x normal, alkaline phosphatase or bilirubin \>2x normal Renal disease = on long term dialysis Hematologic = Unexplained persistent leukocytosis (WBC \>11 K/UL) or hemoglobin \< 8.5 gm/dl 16. Presence of any other clinically-significant medical condition, psychiatric condition, or laboratory abnormality, that in the judgment of the investigator or sponsor may affect compliance with the study protocol or pose a safety risk to the subject. 17. Inability to comply with the conditions of the protocol. 18. Acute coronary syndrome within 4 weeks (clinical diagnosis, confirmed by electrocardiographic abnormalities and elevation of troponin-I). 19. Malignancy within the previous five years, except adequately treated basal cell carcinoma, provided that it is neither infiltrating nor sclerosing, and carcinoma in situ of the cervix. 20. Active uncontrolled systemic infection. Positive blood or deep tissue cultures or clinical or imaging evidence of systemic infection despite complete course of effective antimicrobial therapy as determined by infectious diseases. Localized (non-systemic) infection is not an exclusion criterion. Patients can be re-evaluated, at the discretion of the investigator. 21. Early postpartum cardiomyopathy (within six months of diagnosis). 22. Presence of inherited or acquired immune deficiency or human immunodeficiency virus infection (HIV). Negative HIV test within the preceding 12 months is required. 23. Systemic corticosteroids, immunosuppressive drug therapy (cyclophosphamide, methotrexate, cyclosporine, tacrolimus, azathioprine, mycophenolate, sirolimus, etc.), and DNA depleting or cytotoxic drugs taken within four weeks prior to study treatment. 24. Known Porphyria. 25. Allergy to sodium citrate or any caine type of local anesthetic. 26. Patient enrolled in hospice care.

Design outcomes

Primary

MeasureTime frameDescription
Temperatureup to 12 months post enrollmentTemperature
Uncontrolled Systemic Infectionup to 12 months post enrollmentNumber of admission for uncontrolled systemic infection
All-cause Mortalityup to 12 months post enrollmentRate of Death

Secondary

MeasureTime frameDescription
Hospitalizations Due to Right Heart Failureday 90Number of hospitalizations for to right heart failure
NK Cell DepletionBaseline to day 90percent reduction in NK cells
Gout FlaresDay 90Count of gout flares
6 Minute Walk Distance ChangesBaseline and day 90 post initial infusion6 minute walk distance changes
Change in the Following Cardiac BiomarkerBaseline and day 90 post initial infusionThe change in the lab values N-Terminal Prohormone of Brain Natriuretic Peptide (NT-ProBNP)
Change in RV Systolic FunctionBaseline and day 90 post initial infusionChange in RV systolic function

Countries

United States

Participant flow

Participants by arm

ArmCount
Human Allogeneic Mesenchymal Bone Marrow Cells (aMBMC)
Three intravenous infusions of 1.5 million (aMBMC) per kg administered at approximately 2mL/min. Maximum dose as for 100kg subject or 150 million cells for any subject 100kg or more with each infusion 1 month apart. Human Allogeneic Mesenchymal Bone Marrow Cells (aMBMC): Allogeneic Mesenchymal Bone Marrow Cells (aMBMC) 1.5 million cells/kg
2
Placebo
Three intravenous infusions of 1.5 mL/kg Lactated Ringer's Solution with each infusion 1 month apart. Placebo: 1.5 mL/kg Lactated Ringer's Solution
2
Total4

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDeath11

Baseline characteristics

CharacteristicHuman Allogeneic Mesenchymal Bone Marrow Cells (aMBMC)PlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
1 Participants2 Participants3 Participants
Age, Categorical
Between 18 and 65 years
1 Participants0 Participants1 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
2 Participants2 Participants4 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
2 Participants2 Participants4 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
0 Participants0 Participants0 Participants
Region of Enrollment
United States
2 Participants2 Participants4 Participants
Sex: Female, Male
Female
0 Participants1 Participants1 Participants
Sex: Female, Male
Male
2 Participants1 Participants3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
1 / 21 / 2
other
Total, other adverse events
2 / 22 / 2
serious
Total, serious adverse events
2 / 22 / 2

Outcome results

Primary

All-cause Mortality

Rate of Death

Time frame: up to 12 months post enrollment

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Human Allogeneic Mesenchymal Bone Marrow Cells (aMBMC)All-cause Mortality1 Participants
PlaceboAll-cause Mortality1 Participants
Primary

Temperature

Temperature

Time frame: up to 12 months post enrollment

Population: Due to study termination and small sample size, no analysis was performed

Primary

Uncontrolled Systemic Infection

Number of admission for uncontrolled systemic infection

Time frame: up to 12 months post enrollment

Population: Due to study termination and small sample size, no analysis was performed

Secondary

6 Minute Walk Distance Changes

6 minute walk distance changes

Time frame: Baseline and day 90 post initial infusion

Population: Test was not performed for any subjects at 90 days, therefore no changes could be analyzed

Secondary

Change in RV Systolic Function

Change in RV systolic function

Time frame: Baseline and day 90 post initial infusion

Population: Due to study termination and small sample size, no analysis was performed

Secondary

Change in the Following Cardiac Biomarker

The change in the lab values N-Terminal Prohormone of Brain Natriuretic Peptide (NT-ProBNP)

Time frame: Baseline and day 90 post initial infusion

Population: Due to study termination and small sample size, no analysis was performed

Secondary

Gout Flares

Count of gout flares

Time frame: Day 90

Population: Due to study termination and small sample size, no analysis was performed

Secondary

Hospitalizations Due to Right Heart Failure

Number of hospitalizations for to right heart failure

Time frame: day 90

Population: Due to study termination and small sample size, no analysis was performed

Secondary

NK Cell Depletion

percent reduction in NK cells

Time frame: Baseline to day 90

Population: Due to study termination and small sample size, no analysis was performed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026