Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine immunogenicity varies between individuals, and immune responses correlate with vaccine efficacy. Using data from 1,076 participants enrolled in ChAdOx1 nCov-19 vaccine efficacy trials in the United Kingdom, we found that inter-individual variation in normalized antibody responses against SARS-CoV-2 spike and its receptor-binding domain (RBD) at 28 days after first vaccination shows genome-wide significant association with major histocompatibility complex (MHC) class II alleles. The most statistically significant association with higher levels of anti-RBD antibody was HLA-DQB1*06 (P = 3.2 × 10-9), which we replicated in 1,677 additional vaccinees. Individuals carrying HLA-DQB1*06 alleles were less likely to experience PCR-confirmed breakthrough infection during the ancestral SARS-CoV-2 virus and subsequent Alpha variant waves compared to non-carriers (hazard ratio = 0.63, 0.42-0.93, P = 0.02). We identified a distinct spike-derived peptide that is predicted to bind differentially to HLA-DQB1*06 compared to other similar alleles, and we found evidence of increased spike-specific memory B cell responses in HLA-DQB1*06 carriers at 84 days after first vaccination. Our results demonstrate association of HLA type with Coronavirus Disease 2019 (COVID-19) vaccine antibody response and risk of breakthrough infection, with implications for future vaccine design and implementation.
Original language | English |
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Pages (from-to) | 147-157 |
Number of pages | 11 |
Journal | Nature Medicine |
Volume | 29 |
Issue number | 1 |
Early online date | 13 Oct 2022 |
DOIs | |
Publication status | Published - 1 Jan 2023 |
Bibliographical note
Funding Information:This study is funded by the University of Oxford COVID-19 Research Response Fund and UK Research and Innovation. The ChAdOx1 nCoV-19 (AZD1222) vaccine efficacy trials were funded by the UK National Institute for Health Research (NIHR), UK Research and Innovation, the Bill & Melinda Gates Foundation, the Lemann Foundation, Rede D’OR, the Brava and Telles Foundation and the South African Medical Research Council. The views expressed are those of the authors and not necessarily those of the NIHR or the Department of Health and Social Care. The authors are grateful to the volunteers who participated in this study. AstraZeneca reviewed the data from the study and the final manuscript before submission, but the authors retained editorial control. J.C.K. is supported by a Wellcome Trust Investigator Award (grant no. 204969/Z/16/Z) and the NIHR Oxford Biomedical Research Centre. A.J.M. is an NIHR Academic Clinical Lecturer. The research was supported by the Wellcome Trust Core Award (grant no. 203141/Z/16/Z), with additional support from the NIHR Oxford Biomedical Research Centre and an Academy of Medical Sciences Starter Grant awarded to A.J.M. (SGL024\1096).
Publisher Copyright:
© 2023, The Author(s).
Keywords
- Humans
- Alleles
- Antibodies, Viral
- Breakthrough Infections
- ChAdOx1 nCoV-19
- COVID-19/genetics
- COVID-19 Vaccines/immunology
- Histocompatibility Antigens Class II
- Immunogenicity, Vaccine
- SARS-CoV-2
- Vaccination