Trial Outcomes & Findings for Multiple Dosing of Mesenchymal Stromal Cells in Patients With ARDS (COVID-19) (NCT NCT04466098)

NCT ID: NCT04466098

Last Updated: 2025-01-29

Results Overview

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

8 participants

Primary outcome timeframe

Within 6 hours of the start of the infusion

Results posted on

2025-01-29

Participant Flow

Participant milestones

Participant milestones
Measure
Mesenchymal Stromal Cells
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Overall Study
STARTED
6
2
Overall Study
COMPLETED
3
0
Overall Study
NOT COMPLETED
3
2

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Multiple Dosing of Mesenchymal Stromal Cells in Patients With ARDS (COVID-19)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Total
n=8 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Age, Categorical
Between 18 and 65 years
3 Participants
n=99 Participants
1 Participants
n=107 Participants
4 Participants
n=206 Participants
Age, Categorical
>=65 years
3 Participants
n=99 Participants
1 Participants
n=107 Participants
4 Participants
n=206 Participants
Sex: Female, Male
Female
1 Participants
n=99 Participants
1 Participants
n=107 Participants
2 Participants
n=206 Participants
Sex: Female, Male
Male
5 Participants
n=99 Participants
1 Participants
n=107 Participants
6 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
6 Participants
n=99 Participants
2 Participants
n=107 Participants
8 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Asian
0 Participants
n=99 Participants
1 Participants
n=107 Participants
1 Participants
n=206 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Black or African American
1 Participants
n=99 Participants
0 Participants
n=107 Participants
1 Participants
n=206 Participants
Race (NIH/OMB)
White
5 Participants
n=99 Participants
1 Participants
n=107 Participants
6 Participants
n=206 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Region of Enrollment
United States
6 participants
n=99 Participants
2 participants
n=107 Participants
8 participants
n=206 Participants

PRIMARY outcome

Timeframe: Within 6 hours of the start of the infusion

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Incidence of Grade 3-5 Infusional Toxicities and Predefined Hemodynamic or Respiratory Adverse Events Related to the Infusion of MSC
0 Participants
0 Participants

SECONDARY outcome

Timeframe: Day 7 after first infusion

Population: One participant in 'Mesenchymal Stromal Cells' arm unable to be evaluated.

Mean (SD) represents the change on day 7 after treatment compared to pretreatment value for each biomarker of inflammation. (IL-1, IL-6, IL-8 and TNFa) Measured in pg/mL.

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Change in Biomarkers of Inflammation From Day 0 to Day 7
Change in IL-1
0 pg/mL
Standard Deviation 0.55
0.4 pg/mL
Standard Deviation 0.99
Change in Biomarkers of Inflammation From Day 0 to Day 7
Change in IL-6
-61 pg/mL
Standard Deviation 190
102 pg/mL
Standard Deviation 75
Change in Biomarkers of Inflammation From Day 0 to Day 7
Change in TNFa
0 pg/mL
Standard Deviation 12
2 pg/mL
Standard Deviation 2
Change in Biomarkers of Inflammation From Day 0 to Day 7
Change in IL-8
6 pg/mL
Standard Deviation 53
145 pg/mL
Standard Deviation 33

SECONDARY outcome

Timeframe: On the day of screening and on days 3, 7 and 14 after first infusion

Trend change was determined by evaluating PaO2:FiO2 ratios at prespecified time points and determining the slope of the line of best fit across data points for each patient, followed by taking the mean and SD across patients in each treatment group. Negative and positive slopes indicating decreasing or increasing values over time, respectively.

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Trend Changes in PaO2:FiO2 Ratio
-7 ratio/day
Standard Deviation 8
8 ratio/day
Standard Deviation 7

SECONDARY outcome

Timeframe: On the day of screening and on days 3, 7 and 14 after first infusion

Trend change was determined by evaluating mean airway pressure values at prespecified time points and determining the slope of the line of best fit across data points for each patient, followed by taking the mean and SD across patients in each treatment group. Negative and positive slopes indicating decreasing or increasing values over time, respectively.

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Trend Changes in Mean Airway Pressure
-2.7 ratio/day
Standard Deviation 6
0.3 ratio/day
Standard Deviation 0.4

SECONDARY outcome

Timeframe: On the day of screening and on days 3, 7 and 14 after first infusion

Trend change was determined by evaluating peak pressure values at prespecified time points and determining the slope of the line of best fit across data points for each patient, followed by taking the mean and SD across patients in each treatment group. Negative and positive slopes indicating decreasing or increasing values over time, respectively.

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Trend Changes in Peak Pressure
-0.28 ratio/day
Standard Deviation 1.51
0.19 ratio/day
Standard Deviation 0.45

SECONDARY outcome

Timeframe: On the day of screening (baseline) and on days 3, 7 and 14 after first infusion

Trend change was determined by evaluating plateau pressure values at prespecified time points and determining the slope of the line of best fit across data points for each patient, followed by taking the mean and SD across patients in each treatment group. Negative and positive slopes indicating decreasing or increasing values over time, respectively.

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Trend Changes in Plateau Pressure
0.08 ratio/day
Standard Deviation 2.91
0.38 ratio/day
Standard Deviation 0.71

SECONDARY outcome

Timeframe: On the day of screening and on days 3, 7 and 14 after first infusion

Trend change was determined by evaluating Positive end-expiratory airway pressure (PEEP) values at prespecified time points and determining the slope of the line of best fit across data points for each patient, followed by taking the mean and SD across patients in each treatment group. Negative and positive slopes indicating decreasing or increasing values over time, respectively.

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Trend Changes in Positive End-expiratory Airway Pressure (PEEP)
-0.68 ratio/day
Standard Deviation 0.90
0.14 ratio/day
Standard Deviation 0.28

SECONDARY outcome

Timeframe: 50 days after first infusion

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Incidence of Mortality
2 Participants
1 Participants

SECONDARY outcome

Timeframe: 28 days after first infusion

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Number of ICU-free Days
0 days
3 Participants
2 Participants
Number of ICU-free Days
7 days
1 Participants
0 Participants
Number of ICU-free Days
18 days
1 Participants
0 Participants
Number of ICU-free Days
22 days
1 Participants
0 Participants

SECONDARY outcome

Timeframe: 28 days after first infusion

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Number of Days Alive and Ventilator Free
0 days
3 Participants
1 Participants
Number of Days Alive and Ventilator Free
1 day
0 Participants
1 Participants
Number of Days Alive and Ventilator Free
4 days
1 Participants
0 Participants
Number of Days Alive and Ventilator Free
23 days
1 Participants
0 Participants
Number of Days Alive and Ventilator Free
24 days
1 Participants
0 Participants

SECONDARY outcome

Timeframe: Baseline and Day 28 after first infusion

Acute Lung Injury Score is a composite 4 point scoring system validated by the NHLBI ARDS Network that considers PaO2/FiO2, the level of positive end-expiratory airway pressure, respiratory compliance, and the extent of pulmonary infiltrates on the chest radiograph. Each criterion is scored from 0-4 based on the severity of the condition. The final score is calculated by dividing the total score by the number of criteria used. A score of 0 indicates no lung injury, and a score over 2.5 indicates Acute respiratory distress syndrome (ARDS). The scoring ranges from 0 to a maximum score of 3.

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=3 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=1 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Change in Acute Lung Injury (ALI) Score 2
-0.25 Scores on a scale
Standard Deviation 0.43
-1.5 Scores on a scale
Standard Deviation 0

SECONDARY outcome

Timeframe: 28 days after first infusion

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Incidence of Serious Adverse Events
2 Participants
1 Participants

SECONDARY outcome

Timeframe: 100 days after first infusion

Outcome measures

Outcome measures
Measure
Mesenchymal Stromal Cells
n=6 Participants
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 Participants
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Number of Days Alive Off Supplemental Oxygen
88 days
1 Participants
0 Participants
Number of Days Alive Off Supplemental Oxygen
0 days
2 Participants
1 Participants
Number of Days Alive Off Supplemental Oxygen
10 days
1 Participants
0 Participants
Number of Days Alive Off Supplemental Oxygen
53 days
0 Participants
1 Participants
Number of Days Alive Off Supplemental Oxygen
61 days
1 Participants
0 Participants
Number of Days Alive Off Supplemental Oxygen
87 days
1 Participants
0 Participants

Adverse Events

Mesenchymal Stromal Cells

Serious events: 2 serious events
Other events: 6 other events
Deaths: 2 deaths

Placebo

Serious events: 1 serious events
Other events: 2 other events
Deaths: 1 deaths

Serious adverse events

Serious adverse events
Measure
Mesenchymal Stromal Cells
n=6 participants at risk
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 participants at risk
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Respiratory, thoracic and mediastinal disorders
Adult respiratory distress syndrome
16.7%
1/6 • Number of events 1 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Infections and infestations
Lung infection
16.7%
1/6 • Number of events 2 • 6 months
0.00%
0/2 • 6 months

Other adverse events

Other adverse events
Measure
Mesenchymal Stromal Cells
n=6 participants at risk
Three fixed doses of MSC approximately 48 hours apart. Mesenchymal stromal cells: Thawed product containing MSC(300x10\^6) in DMSO resuspended 1:1 with Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Placebo
n=2 participants at risk
Three fixed doses of placebo control approximately 48 hours apart. Placebo: Dextran 40 + 5% human serum albumin \[total volume 60 mL\]
Infections and infestations
Lung infection
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Infections and infestations
Sepsis
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Infections and infestations
Urinary tract infection
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Investigations
Investigations - Other, specify
50.0%
3/6 • Number of events 3 • 6 months
0.00%
0/2 • 6 months
Blood and lymphatic system disorders
Anemia
66.7%
4/6 • Number of events 4 • 6 months
100.0%
2/2 • Number of events 2 • 6 months
Metabolism and nutrition disorders
Acidosis
0.00%
0/6 • 6 months
100.0%
2/2 • Number of events 2 • 6 months
Metabolism and nutrition disorders
Hyperkalemia
16.7%
1/6 • Number of events 1 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Metabolism and nutrition disorders
Hypernatremia
16.7%
1/6 • Number of events 1 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Metabolism and nutrition disorders
Hypokalemia
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Metabolism and nutrition disorders
Hypocalcemia
16.7%
1/6 • Number of events 1 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Metabolism and nutrition disorders
Hypoalbuminemia
0.00%
0/6 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Infections and infestations
Bacteremia
33.3%
2/6 • Number of events 2 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Infections and infestations
Bronchial infection
16.7%
1/6 • Number of events 1 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Investigations
Alkaline phosphatase increased
33.3%
2/6 • Number of events 2 • 6 months
0.00%
0/2 • 6 months
Investigations
Aspartate aminotransferase increased
33.3%
2/6 • Number of events 2 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Investigations
Alanine aminotransferase increased
33.3%
2/6 • Number of events 2 • 6 months
0.00%
0/2 • 6 months
Investigations
Blood bilirubin increased
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Respiratory, thoracic and mediastinal disorders
Pneumonitis
33.3%
2/6 • Number of events 2 • 6 months
0.00%
0/2 • 6 months
Respiratory, thoracic and mediastinal disorders
Pneumothorax
33.3%
2/6 • Number of events 2 • 6 months
0.00%
0/2 • 6 months
Respiratory, thoracic and mediastinal disorders
Pulmonary fistula
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Cardiac disorders
Atrial fibrillation
16.7%
1/6 • Number of events 1 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Cardiac disorders
Pericardial effusion
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Cardiac disorders
Sinus tachycardia
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Renal and urinary disorders
Acute kidney injury
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Renal and urinary disorders
Hematuria
0.00%
0/6 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Renal and urinary disorders
Renal hemorrhage
0.00%
0/6 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Vascular disorders
Hematoma
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Vascular disorders
Hypertension
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Vascular disorders
Hypotension
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Vascular disorders
Thromboembolic event
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Endocrine disorders
Adrenal insufficiency
16.7%
1/6 • Number of events 1 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
General disorders
Fever
0.00%
0/6 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
General disorders
Hypothermia
0.00%
0/6 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Nervous system disorders
Nervous system disorders - Other, specify
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Nervous system disorders
Stroke
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months
Hepatobiliary disorders
Hepatobiliary disorders - Other, specify
0.00%
0/6 • 6 months
50.0%
1/2 • Number of events 1 • 6 months
Skin and subcutaneous tissue disorders
Subcutaneous emphysema
16.7%
1/6 • Number of events 1 • 6 months
0.00%
0/2 • 6 months

Additional Information

Dr. David Ingbar

University of Minnesota, Masonic Cancer Center

Phone: 612-624-9452

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place