The impact of rare germline variants on human somatic mutation processes

Abstract Somatic mutations are an inevitable component of ageing and the most important cause of cancer. The rates and types of somatic mutation vary across individuals, but relatively few inherited influences on mutation processes are known. We perform a gene-based rare variant association study wi...

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Main Authors: Mischan Vali-Pour, Solip Park, Jose Espinosa-Carrasco, Daniel Ortiz-Martínez, Ben Lehner, Fran Supek
Format: Article
Language:English
Published: Nature Portfolio 2022-06-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-022-31483-1
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author Mischan Vali-Pour
Solip Park
Jose Espinosa-Carrasco
Daniel Ortiz-Martínez
Ben Lehner
Fran Supek
author_facet Mischan Vali-Pour
Solip Park
Jose Espinosa-Carrasco
Daniel Ortiz-Martínez
Ben Lehner
Fran Supek
author_sort Mischan Vali-Pour
collection DOAJ
description Abstract Somatic mutations are an inevitable component of ageing and the most important cause of cancer. The rates and types of somatic mutation vary across individuals, but relatively few inherited influences on mutation processes are known. We perform a gene-based rare variant association study with diverse mutational processes, using human cancer genomes from over 11,000 individuals of European ancestry. By combining burden and variance tests, we identify 207 associations involving 15 somatic mutational phenotypes and 42 genes that replicated in an independent data set at a false discovery rate of 1%. We associate rare inherited deleterious variants in genes such as MSH3, EXO1, SETD2, and MTOR with two phenotypically different forms of DNA mismatch repair deficiency, and variants in genes such as EXO1, PAXIP1, RIF1, and WRN with deficiency in homologous recombination repair. In addition, we identify associations with other mutational processes, such as APEX1 with APOBEC-signature mutagenesis. Many of the genes interact with each other and with known mutator genes within cellular sub-networks. Considered collectively, damaging variants in the identified genes are prevalent in the population. We suggest that rare germline variation in diverse genes commonly impacts mutational processes in somatic cells.
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spelling doaj.art-22847fd38e7c4b5e9fbc949293592c932023-09-10T11:17:20ZengNature PortfolioNature Communications2041-17232022-06-0113112110.1038/s41467-022-31483-1The impact of rare germline variants on human somatic mutation processesMischan Vali-Pour0Solip Park1Jose Espinosa-Carrasco2Daniel Ortiz-Martínez3Ben Lehner4Fran Supek5Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology (BIST)Centro Nacional de Investigaciones Oncológicas (CNIO)Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST)Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST)Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology (BIST)Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST)Abstract Somatic mutations are an inevitable component of ageing and the most important cause of cancer. The rates and types of somatic mutation vary across individuals, but relatively few inherited influences on mutation processes are known. We perform a gene-based rare variant association study with diverse mutational processes, using human cancer genomes from over 11,000 individuals of European ancestry. By combining burden and variance tests, we identify 207 associations involving 15 somatic mutational phenotypes and 42 genes that replicated in an independent data set at a false discovery rate of 1%. We associate rare inherited deleterious variants in genes such as MSH3, EXO1, SETD2, and MTOR with two phenotypically different forms of DNA mismatch repair deficiency, and variants in genes such as EXO1, PAXIP1, RIF1, and WRN with deficiency in homologous recombination repair. In addition, we identify associations with other mutational processes, such as APEX1 with APOBEC-signature mutagenesis. Many of the genes interact with each other and with known mutator genes within cellular sub-networks. Considered collectively, damaging variants in the identified genes are prevalent in the population. We suggest that rare germline variation in diverse genes commonly impacts mutational processes in somatic cells.https://doi.org/10.1038/s41467-022-31483-1
spellingShingle Mischan Vali-Pour
Solip Park
Jose Espinosa-Carrasco
Daniel Ortiz-Martínez
Ben Lehner
Fran Supek
The impact of rare germline variants on human somatic mutation processes
Nature Communications
title The impact of rare germline variants on human somatic mutation processes
title_full The impact of rare germline variants on human somatic mutation processes
title_fullStr The impact of rare germline variants on human somatic mutation processes
title_full_unstemmed The impact of rare germline variants on human somatic mutation processes
title_short The impact of rare germline variants on human somatic mutation processes
title_sort impact of rare germline variants on human somatic mutation processes
url https://doi.org/10.1038/s41467-022-31483-1
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