Article
作者: O’Kane, Cecilia M. ; Welters, Ingeborg D.M. ; Rynne, Jennifer ; Albaiceta, Guillermo ; Laffey, John G. ; Gardiner, Hannah J. ; McDowell, Cliona ; Perkins, Gavin D. ; Curley, Gerard ; Silversides, Jonathan ; Campbell, Christina ; Jackson, Colette ; Rostron, Anthony J. ; McFarland, Margaret ; McFerran, Jamie ; Brealey, David ; Bentley, Andrew M. ; Hopkins, Phillip ; Shankar-Hari, Manu ; Kefela, Kallirroi ; Dushianthan, Ahilanadan ; Krasnodembskaya, Anna ; McGuigan, Peter ; Amado-Rodríguez, Laura ; Bannard-Smith, Jonathan ; Gorman, Ellen A. ; Smythe, Jon ; Tunnicliffe, William S. ; Thompson, Jacqui ; Clarke, Mike ; McAuley, Daniel F. ; Williams, Barry
Rationale:Mesenchymal stromal cells (MSCs) may modulate inflammation, promoting repair in coronavirus disease (COVID-19)–related acute respiratory distress syndrome (ARDS).
Objectives:We investigated the safety and efficacy of ORBCEL-C (CD362 [cluster of differentiation 362]–enriched, umbilical cord–derived MSCs) in COVID-19–related ARDS.
Methods:In this multicenter, randomized, double-blind, allocation-concealed, placebo-controlled trial (NCT 03042143), patients with moderate to severe COVID-19–related ARDS were randomized to receive ORBCEL-C (400 million cells) or placebo (Plasma-Lyte 148). The primary safety and efficacy outcomes were the incidence of serious adverse events and oxygenation index at Day 7, respectively. Secondary outcomes included respiratory compliance, driving pressure, PaO2:Fi O2 ratio, and Sequential Organ Failure Assessment score. Clinical outcomes relating to duration of ventilation, lengths of ICU and hospital stays, and mortality were collected. Long-term follow-up included diagnosis of interstitial lung disease at 1 year and significant medical events and mortality at 2 years. Transcriptomic analysis was performed on whole blood at Days 0, 4, and 7.
Measurements and Main Results:Sixty participants were recruited (final analysis: n = 30 received ORBCEL-C, n = 29 received placebo; 1 participant in the placebo group withdrew consent). Six serious adverse events occurred in the ORBCEL-C group and three in the placebo group (risk ratio, 2.9 [95% confidence interval, 0.6–13.2]; P = 0.25). Day 7 mean (SD) oxygenation index did not differ (ORBCEL-C, 98.3 [57.2] cm H2O/kPa; placebo, 96.6 [67.3] cm H2O/kPa). There were no differences in secondary surrogate outcomes or in mortality at Day 28, Day 90, 1 year, or 2 years. There was no difference in the prevalence of interstitial lung disease at 1 year or significant medical events up to 2 years. ORBCEL-C modulated the peripheral blood transcriptome.
Conclusion:ORBCEL-C MSCs were safe in subjects with moderate to severe COVID-19–related ARDS but did not improve surrogates of pulmonary organ dysfunction.