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• W2900523268 abstract "ABSTRACT Somatic mutations in cancer can result in the presentation of mutated peptides on the cell surface, eliciting an immune response. Mutant peptides are presented via HLA molecules and are known as neoantigens. It has been suggested that selection acts against the underlying mutations, leading to neoantigen depletion. Knowing the extent of this specific form of immunoediting may provide fundamental insights into tumour-immune interactions during tumour evolution. Here, we quantified the extent of neoantigen depletion in a wide range of human cancers by studying somatic mutations in the HLA-binding annotated exome, i.e. genomic regions that can be translated into presented peptides. We initially observed reduced non-synonymous mutation rates in presented regions, suggestive of neoantigen depletion. However, when compared to the expected mutation rates from a trinucleotide-based mutational signature model, depletion signals were negligible. This is explained by correlative relationships between the likelihood of mutagenesis in different nucleotide sequences and predicted HLA affinities for corresponding peptides. Our results suggest that signals of immunogenic negative selection are weak or absent in cancer genomics data and that other mechanisms to escape immune responses early during tumour evolution might be more efficient." @default.
• W2900523268 created "2018-11-29" @default.
• W2900523268 creator A5006064209 @default.
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• W2900523268 date "2018-11-26" @default.
• W2900523268 modified "2023-10-16" @default.
• W2900523268 title "Lack of detectable neoantigen depletion in the untreated cancer genome" @default.
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• W2900523268 doi "https://doi.org/10.1101/478263" @default.
• W2900523268 hasPublicationYear "2018" @default.
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