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Lim EHT, Vlaar APJ, Brouwer MC, van de Beek D. Targeting C5a is beneficial in critically ill COVID-19 patients. Immunobiology 2023; 228:152743. [PMID: 37717470 DOI: 10.1016/j.imbio.2023.152743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/05/2023] [Accepted: 09/11/2023] [Indexed: 09/19/2023]
Affiliation(s)
- Endry H T Lim
- Amsterdam UMC Location University of Amsterdam, Department of Intensive Care Medicine, Meibergdreef 9, Amsterdam, The Netherlands; Amsterdam UMC Location University of Amsterdam, Department of Neurology, Amsterdam Neuroscience, Meibergdreef 9, Amsterdam, The Netherlands.
| | - Alexander P J Vlaar
- Amsterdam UMC Location University of Amsterdam, Department of Intensive Care Medicine, Meibergdreef 9, Amsterdam, The Netherlands
| | - Matthijs C Brouwer
- Amsterdam UMC Location University of Amsterdam, Department of Neurology, Amsterdam Neuroscience, Meibergdreef 9, Amsterdam, The Netherlands
| | - Diederik van de Beek
- Amsterdam UMC Location University of Amsterdam, Department of Neurology, Amsterdam Neuroscience, Meibergdreef 9, Amsterdam, The Netherlands
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Lim EHT, Vlaar APJ, de Bruin S, Rückinger S, Thielert C, Habel M, Guo R, Burnett BP, Dickinson J, Brouwer MC, Riedemann NC, van de Beek D. Pharmacokinetic analysis of vilobelimab, anaphylatoxin C5a and antidrug antibodies in PANAMO: a phase 3 study in critically ill, invasively mechanically ventilated COVID-19 patients. Intensive Care Med Exp 2023; 11:37. [PMID: 37332066 DOI: 10.1186/s40635-023-00520-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/15/2023] [Indexed: 06/20/2023] Open
Abstract
BACKGROUND Vilobelimab, a complement 5a (C5a)-specific monoclonal antibody, reduced mortality in critically ill COVID-19 patients in a phase 3 multicentre, randomized, double-blind, placebo-controlled study. As part of the study, vilobelimab concentrations and C5a levels as well as antidrug antibodies (ADAs) to vilobelimab were analysed. RESULTS From Oct 1, 2020 to Oct 4, 2021, 368 invasively mechanically ventilated COVID-19 patients were randomized: 177 patients were randomly assigned to receive vilobelimab while 191 patients received placebo. Pharmacokinetic sampling was only performed at sites in Western Europe. Blood samples for vilobelimab measurements were available for 93 of 177 (53%) patients in the vilobelimab group and 99 of 191 (52%) patients in the placebo group. On day 8, after three infusions, mean vilobelimab (trough) concentrations ranged from 21,799.3 to 302,972.1 ng/mL (geometric mean 137,881.3 ng/mL). Blood samples for C5a measurements were available for 94 of 177 (53%) patients in the vilobelimab group and 99 of 191 (52%) patients in the placebo group. At screening, C5a levels were highly elevated and comparable between groups. In the vilobelimab group, median C5a levels were 118.3 ng/mL [IQR 71.2-168.2 ng/mL] and in the placebo group, median C5a levels were 104.6 ng/mL [IQR 77.5-156.6 ng/mL]. By day 8, median C5a levels were reduced by 87% in the vilobelimab group (median 14.5 ng/mL [IQR 9.5-21.0 ng/mL], p < 0.001) versus an 11% increase in the placebo group (median 119.2 ng/mL [IQR 85.9-152.1 ng/mL]). Beyond day 8, though plasma sampling was sparse, C5a levels did not reach screening levels in the vilobelimab group while C5a levels remained elevated in the placebo group. Treatment-emergent ADAs were observed in one patient in the vilobelimab group at hospital discharge on day 40 and in one patient in the placebo group at hospital discharge on day 25. CONCLUSIONS This analysis shows that vilobelimab efficiently inhibits C5a in critically ill COVID-19 patients. There was no evidence of immunogenicity associated with vilobelimab treatment. Trial registration ClinicalTrials.gov, NCT04333420. Registered 3 April 2020, https://clinicaltrials.gov/ct2/show/NCT04333420.
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Affiliation(s)
- Endry H T Lim
- Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, AMC Room C3-421, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
- Department of Neurology, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.
| | - Alexander P J Vlaar
- Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, AMC Room C3-421, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Sanne de Bruin
- Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, AMC Room C3-421, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | | | | | | | - Renfeng Guo
- InflaRx Pharmaceuticals Inc, Ann Arbor, MI, USA
| | | | | | - Matthijs C Brouwer
- Department of Neurology, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | | | - Diederik van de Beek
- Department of Neurology, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
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Lim EHT, Vlaar APJ, Bos LDJ, van Vught LA, Boer AMTD, Dujardin RWG, Habel M, Xu Z, Brouwer MC, van de Beek D, de Bruin S, Algera AG, Appelman B, van Baarle F, Beudel M, Bogaard HJ, Bomers M, Bonta P, Bos LDJ, Botta M, de Brabander J, Bree G, Bugiani M, Bulle E, Chouchane O, Cloherty A, Buis DTP, de Rotte MCFJ, Dijkstra M, Dongelmans DA, Elbers P, Fleuren L, Geerlings S, Geijtenbeek T, Girbes A, Goorhuis B, Grobusch MP, Hagens L, Hamann J, Harris V, Hemke R, Hermans SM, Heunks L, Hollmann M, Horn J, Hovius JW, de Jong MD, Koning R, van Mourik N, Nellen J, Nossent EJ, Paulus F, Peters E, Piña-Fuentes DAI, van der Poll T, Preckel B, Prins JM, Raasveld J, Reijnders T, Schinkel M, Schrauwen FAP, Schultz MJ, Schuurman A, Schuurmans J, Sigaloff K, Slim MA, Smeele P, Smit M, Stijnis CS, Stilma W, Teunissen C, Thoral P, Tsonas AM, Tuinman PR, van der Valk M, Veelo D, Volleman C, de Vries H, van Vugt M, Wouters D, Zwinderman AH, Wiersinga WJ. Anti-C5a antibody vilobelimab treatment and the effect on biomarkers of inflammation and coagulation in patients with severe COVID-19: a substudy of the phase 2 PANAMO trial. Respir Res 2022; 23:375. [PMID: 36566174 PMCID: PMC9789513 DOI: 10.1186/s12931-022-02278-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/05/2022] [Indexed: 12/25/2022] Open
Abstract
We recently reported in the phase 3 PANAMO trial that selectively blocking complement 5a (C5a) with vilobelimab led to improved survival in critically ill COVID-19 patients. C5a is an important contributor to the innate immune system and can also activate the coagulation system. High C5a levels have been reported in severely ill COVID-19 patients and correlate with disease severity and mortality. Previously, we assessed the potential benefit and safety of vilobelimab in severe COVID-19 patients. In the current substudy of the phase 2 PANAMO trial, we aim to explore the effects of vilobelimab on various biomarkers of inflammation and coagulation. Between March 31 and April 24, 2020, 17 patients with severe COVID-19 pneumonia were enrolled in an exploratory, open-label, randomised phase 2 trial. Blood markers of complement, endothelial activation, epithelial barrier disruption, inflammation, neutrophil activation, neutrophil extracellular trap (NET) formation and coagulopathy were measured using enzyme-linked immunosorbent assay (ELISA) or utilizing the Luminex platform. During the first 15 days after inclusion, change in biomarker concentrations between the two groups were modelled with linear mixed-effects models with spatial splines and compared. Eight patients were randomized to vilobelimab treatment plus best supportive care (BSC) and nine patients were randomized to BSC only. A significant decrease over time was seen in the vilobelimab plus BSC group for C5a compared to the BSC only group (p < 0.001). ADAMTS13 levels decreased over time in the BSC only group compared to the vilobelimab plus BSC group (p < 0.01) and interleukin-8 (IL-8) levels were statistically more suppressed in the vilobelimab plus BSC group compared to the BSC group (p = 0.03). Our preliminary results show that C5a inhibition decreases the inflammatory response and hypercoagulability, which likely explains the beneficial effect of vilobelimab in severe COVID-19 patients. Validation of these results in a larger sample size is warranted.
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Affiliation(s)
- Endry H. T. Lim
- grid.7177.60000000084992262Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A.), Amsterdam, The Netherlands ,grid.7177.60000000084992262Department of Neurology, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,grid.484519.5Amsterdam Neuroscience, Amsterdam, The Netherlands ,grid.509540.d0000 0004 6880 3010Department of Intensive Care Medicine, Amsterdam UMC, Location AMC, Room C3-421, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Alexander P. J. Vlaar
- grid.7177.60000000084992262Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A.), Amsterdam, The Netherlands
| | - Lieuwe D. J. Bos
- grid.7177.60000000084992262Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A.), Amsterdam, The Netherlands
| | - Lonneke A. van Vught
- grid.7177.60000000084992262Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,grid.7177.60000000084992262Center for Experimental and Molecular Medicine, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
| | - Anita M. Tuip-de Boer
- grid.7177.60000000084992262Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A.), Amsterdam, The Netherlands
| | - Romein W. G. Dujardin
- grid.7177.60000000084992262Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A.), Amsterdam, The Netherlands
| | | | - Zhongli Xu
- grid.476439.bInflaRx GmbH, Jena, Germany
| | - Matthijs C. Brouwer
- grid.7177.60000000084992262Department of Neurology, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,grid.484519.5Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Diederik van de Beek
- grid.7177.60000000084992262Department of Neurology, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,grid.484519.5Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Sanne de Bruin
- grid.7177.60000000084992262Department of Intensive Care Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands ,Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A.), Amsterdam, The Netherlands
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