Respiratory failure & ventilation

A Randomized Trial of Mesenchymal Stromal Cells for Moderate to Severe Acute Respiratory Distress Syndrome from Coronavirus Disease (COVID-19)

Am J Respir Crit Care MedPublished Randomised controlled trial

Primary resultResult — go to the resultRelative risk 0.88 95% CI 0.64–1.21

Authors' conclusion

Mesenchymal cells, while safe, did not improve 30-day survival or 60-day ventilator-free days in patients with moderate and/or severe COVID-19-related acute respiratory distress syndrome.

Study context

Population
Mechanically ventilated patients with moderate or severe COVID-19-induced ARDSof planned 300
Participants
222 participants
Comparison
Cell vs Control
  • Celln = 112
  • Controln = 110reference
Primary endpoint
Mortality
Follow-up
30 days
Methodological detailssham-controlled, prespecified interim analysis, DSMB recommended halting enrollment at the third interim analysis (n = 222 of planned 300)
  • Sham-controlled
  • Prespecified interim analysis
  • DSMB recommended halting enrollment at the third interim analysis (n = 222 of planned 300)

Primary result

As reported in the abstract

Relative risk

0.88

95% CI 0.64–1.21

P = 0.43

Events by treatment group

Cell vs Control
RR 0.88 (95% CI 0.64–1.21); P = 0.43

Secondary outcomes

OutcomeControlOR for resolution or improvement of ARDS (95% CI)
Resolution or improvement of ARDS · 30 daysCells vs Control43.4%1.36 (0.57–3.21)
OutcomeControl
Days alive off ventilation within 60 days (ranked analysis; higher is better)median rank 102.0 (IQR 54.0–162.5)
  • Days alive off ventilation within 60 days (ranked analysis; higher is better): Cells median rank 117.3 (IQR 60.0–169.5)
  • Resolution or improvement of ARDS: Cells 49.0%
  • Resolution or improvement of ARDS: 51/104 vs 46/106

Days alive off ventilation within 60 days (ranked analysis; higher is better)

No significant differences

Safety

Infusion-related toxicities; serious adverse events over 30 days

No infusion-related toxicities
Overall serious adverse events similar

Original publication

A Randomized Trial of Mesenchymal Stromal Cells for Moderate to Severe Acute Respiratory Distress Syndrome from COVID-19. Am J Respir Crit Care Med. Published 1 February 2023. doi:10.1164/rccm.202201-0157oc

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