Nature Communications (Mar 2024)

Quantifying how single dose Ad26.COV2.S vaccine efficacy depends on Spike sequence features

  • Craig A. Magaret,
  • Li Li,
  • Allan C. deCamp,
  • Morgane Rolland,
  • Michal Juraska,
  • Brian D. Williamson,
  • James Ludwig,
  • Cindy Molitor,
  • David Benkeser,
  • Alex Luedtke,
  • Brian Simpkins,
  • Fei Heng,
  • Yanqing Sun,
  • Lindsay N. Carpp,
  • Hongjun Bai,
  • Bethany L. Dearlove,
  • Elena E. Giorgi,
  • Mandy Jongeneelen,
  • Boerries Brandenburg,
  • Matthew McCallum,
  • John E. Bowen,
  • David Veesler,
  • Jerald Sadoff,
  • Glenda E. Gray,
  • Sanne Roels,
  • An Vandebosch,
  • Daniel J. Stieh,
  • Mathieu Le Gars,
  • Johan Vingerhoets,
  • Beatriz Grinsztejn,
  • Paul A. Goepfert,
  • Leonardo Paiva de Sousa,
  • Mayara Secco Torres Silva,
  • Martin Casapia,
  • Marcelo H. Losso,
  • Susan J. Little,
  • Aditya Gaur,
  • Linda-Gail Bekker,
  • Nigel Garrett,
  • Carla Truyers,
  • Ilse Van Dromme,
  • Edith Swann,
  • Mary A. Marovich,
  • Dean Follmann,
  • Kathleen M. Neuzil,
  • Lawrence Corey,
  • Alexander L. Greninger,
  • Pavitra Roychoudhury,
  • Ollivier Hyrien,
  • Peter B. Gilbert

DOI
https://doi.org/10.1038/s41467-024-46536-w
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 22

Abstract

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Abstract In the ENSEMBLE randomized, placebo-controlled phase 3 trial (NCT04505722), estimated single-dose Ad26.COV2.S vaccine efficacy (VE) was 56% against moderate to severe–critical COVID-19. SARS-CoV-2 Spike sequences were determined from 484 vaccine and 1,067 placebo recipients who acquired COVID-19. In this set of prespecified analyses, we show that in Latin America, VE was significantly lower against Lambda vs. Reference and against Lambda vs. non-Lambda [family-wise error rate (FWER) p < 0.05]. VE differed by residue match vs. mismatch to the vaccine-insert at 16 amino acid positions (4 FWER p < 0.05; 12 q-value ≤ 0.20); significantly decreased with physicochemical-weighted Hamming distance to the vaccine-strain sequence for Spike, receptor-binding domain, N-terminal domain, and S1 (FWER p < 0.001); differed (FWER ≤ 0.05) by distance to the vaccine strain measured by 9 antibody-epitope escape scores and 4 NTD neutralization-impacting features; and decreased (p = 0.011) with neutralization resistance level to vaccinee sera. VE against severe–critical COVID-19 was stable across most sequence features but lower against the most distant viruses.