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Targeting hepatitis B vaccine escape using immunogenetics in Bangladeshi infants

Butler-Laporte, G.; Auckland, K.; Noor, Z.; Kabir, M.; Alam, M.; Carstensen, T.; Wojcik, G. L.; Chong, A. Y.; Pomilla, C.; Noble, J. A.; McDevitt, S.; Smits, G.; Wareing, S.; van der Klis, F. R.; Jeffery, K.; Kirkpatrick, B.; Sirima, S.; Madhi, S.; Elliott, A.; Richards, J. B.; Hill, A. V.; Duggal, P.; PROVIDE authors, ; CRYPTO authors, ; Sandhu, M. S.; Haque, R.; Petri, W. A.; Mentzer, A. J.

2023-06-29 genetic and genomic medicine
10.1101/2023.06.26.23291885 medRxiv
Show abstract

Hepatitis B virus (HBV) vaccine escape mutants (VEM) are increasingly described, threatening progress in control of this virus worldwide. Here we studied the relationship between host genetic variation, vaccine immunogenicity and viral sequences implicating VEM emergence. In a cohort of 1,096 Bangladeshi children, we identified human leukocyte antigen (HLA) variants associated with response vaccine antigens. Using an HLA imputation panel with 9,448 south Asian individuals DPB1*04:01 was associated with higher HBV antibody responses (p=4.5x10-30). The underlying mechanism is a result of higher affinity binding of HBV surface antigen epitopes to DPB1*04:01 dimers. This is likely a result of evolutionary pressure at the HBV surface antigen a-determinant segment incurring VEM specific to HBV. Prioritizing pre-S isoform HBV vaccines may tackle the rise of HBV vaccine evasion. One-Sentence SummaryHost genetics underlying hepatitis B vaccine response in Bangladeshi infants identifies mechanisms of viral vaccine escape, and how to prevent it.

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