A phase 2 randomized, double-blind, placebo-controlled trial of the monoclonal antibody MHAA4549A in patients with acute uncomplicated influenza a infection

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  • dc.contributor.author Jim, Jeremy J.
  • dc.contributor.author Dar, Sadia
  • dc.contributor.author Venter, Dirk
  • dc.contributor.author Horcajada Gallego, Juan Pablo
  • dc.contributor.author Kulkarni, Priya
  • dc.contributor.author Nguyen, Allen
  • dc.contributor.author McBride, Jacqueline M.
  • dc.contributor.author Deng, Rong
  • dc.contributor.author Galanter, Joshua
  • dc.contributor.author Chu, Tom
  • dc.contributor.author Newton, Elizabeth M.
  • dc.contributor.author Tavel, Jorge A.
  • dc.contributor.author Peck, Melicent C.
  • dc.date.accessioned 2022-10-17T06:26:26Z
  • dc.date.available 2022-10-17T06:26:26Z
  • dc.date.issued 2021
  • dc.description.abstract Background: MHAA4549A, a human monoclonal antibody targeting the influenza A hemagglutinin stalk, neutralizes influenza A virus in animal and human volunteer challenge studies. We investigated the safety and tolerability, efficacy, and pharmacokinetics of MHAA4549A in outpatients with acute, uncomplicated influenza A infection. Methods: This was a phase 2, randomized, double-blind, placebo-controlled trial of single intravenous (IV) doses of 3600 mg or 8400 mg of MHAA4549A or IV placebo in adult outpatients testing positive for influenza A. Patients were enrolled across 35 sites in 6 countries. Randomization and dosing occurred within ≤72 hours of symptom onset; the study duration was 14 weeks. The primary end point was the nature and frequency of adverse events (AEs). Secondary end points included median time to alleviation of all influenza symptoms, effects on nasopharyngeal viral load and duration of viral shedding, and MHAA4549A serum pharmacokinetics. Results: Of 125 randomized patients, 124 received study treatment, with 99 confirmed positive for influenza A by central testing. The frequency of AEs between the MHAA4549A and placebo groups was similar; nausea was most common (8 patients; 6.5%). MHAA4549A serum exposure was confirmed in all MHAA4549A-treated patients and was dose-proportional. No hospitalizations or deaths occurred. Between the MHAA4549A and placebo groups, no statistically significant differences occurred in the median time to alleviation of all symptoms, nasopharyngeal viral load, or duration of viral shedding. Conclusions: While MHAA4549A was safe and well tolerated with confirmed exposure, the antibody did not improve clinical outcomes in patients with acute uncomplicated influenza A infection.
  • dc.format.mimetype application/pdf
  • dc.identifier.citation Lim JJ, Dar S, Venter D, Horcajada JP, Kulkarni P, Nguyen A, McBride JM, Deng R, Galanter J, Chu T, Newton EM, Tavel JA, Peck MC. A phase 2 randomized, double-blind, placebo-controlled trial of the monoclonal antibody MHAA4549A in patients with acute uncomplicated influenza a infection. Open Forum Infect Dis. 2021 Dec 10;9(2):ofab630. DOI: 10.1093/ofid/ofab630
  • dc.identifier.doi http://dx.doi.org/10.1093/ofid/ofab630
  • dc.identifier.issn 2328-8957
  • dc.identifier.uri http://hdl.handle.net/10230/54425
  • dc.language.iso eng
  • dc.publisher Oxford University Press
  • dc.relation.ispartof Open Forum Infect Dis. 2021 Dec 10;9(2):ofab630
  • dc.rights © The Author(s) 2021. Published by Oxford University Press on behalf of Infectious Diseases Society of America. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
  • dc.rights.accessRights info:eu-repo/semantics/openAccess
  • dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/
  • dc.subject.keyword MHAA4549A
  • dc.subject.keyword Antiviral agents
  • dc.subject.keyword Influenza A virus
  • dc.subject.keyword Monoclonal antibody
  • dc.title A phase 2 randomized, double-blind, placebo-controlled trial of the monoclonal antibody MHAA4549A in patients with acute uncomplicated influenza a infection
  • dc.type info:eu-repo/semantics/article
  • dc.type.version info:eu-repo/semantics/publishedVersion

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