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Safety and immunogenicity of the bi-cistronic GLS-5310 COVID-19 DNA vaccine delivered with the GeneDerm suction device.
- Source :
-
International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases [Int J Infect Dis] 2023 Mar; Vol. 128, pp. 112-120. Date of Electronic Publication: 2022 Dec 31. - Publication Year :
- 2023
-
Abstract
- Objectives: The CoV2-001 phase I randomized trial evaluated the safety and immunogenicity of the GLS-5310 bi-cistronic DNA vaccine through 48 weeks of follow-up.<br />Design: A total of 45 vaccine-naïve participants were recruited between December 31, 2020, and March 30, 2021. GLS-5310, encoding for the SARS-CoV-2 spike and open reading frame 3a (ORF3a) proteins, was administered intradermally at 0.6 mg or 1.2 mg per dose, followed by application of the GeneDerm suction device as part of a two-dose regimen spaced either 8 or 12 weeks between vaccinations.<br />Results: GLS-5310 was well tolerated with no serious adverse events reported. Antibody and T cell responses were dose-independent. Anti-spike antibodies were induced in 95.5% of participants with an average geometric mean titer of ∼480 four weeks after vaccination and declined minimally through 48 weeks. Neutralizing antibodies were induced in 55.5% of participants with post-vaccination geometric mean titer of 28.4. T cell responses were induced in 97.8% of participants, averaging 716 site forming units/10 <superscript>6</superscript> cells four weeks after vaccination, increasing to 1248 at week 24, and remaining greater than 1000 through 48 weeks.<br />Conclusion: GLS-5310 administered with the GeneDerm suction device was well tolerated and induced high levels of binding antibodies and T-cell responses. Antibody responses were similar to other DNA vaccines, whereas T cell responses were many-fold greater than DNA and non-DNA vaccines.<br />Competing Interests: Declaration of competing interest CCR, HL, AG, YO, J-EP, BJ, J-EL, DK, SBK, KM, IK, MJ, YKP, JNM are employees of GeneOne Life Science, Inc.<br /> (Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1878-3511
- Volume :
- 128
- Database :
- MEDLINE
- Journal :
- International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases
- Publication Type :
- Academic Journal
- Accession number :
- 36592685
- Full Text :
- https://doi.org/10.1016/j.ijid.2022.12.037