PT - JOURNAL ARTICLE AU - Ferran MuiƱos AU - Francisco Martinez-Jimenez AU - Oriol Pich AU - Abel Gonzalez-Perez AU - Nuria Lopez-Bigas TI - In silico saturation mutagenesis of cancer genes AID - 10.1101/2020.06.03.130211 DP - 2020 Jan 01 TA - bioRxiv PG - 2020.06.03.130211 4099 - http://biorxiv.org/content/early/2020/06/09/2020.06.03.130211.short 4100 - http://biorxiv.org/content/early/2020/06/09/2020.06.03.130211.full AB - Extensive bioinformatics analysis of datasets of tumor somatic mutations data have revealed the presence of some 500-600 cancer driver genes. The identification of all potential driver mutations affecting cancer genes is essential to implement precision cancer medicine and to understand the interplay of mutation probability and selection in tumor development. Here, we present an in silico saturation mutagenesis approach to identify all driver mutations in 568 cancer genes across 66 tumor types. For most cancer genes the mutation probability across tissues --underpinned by active mutational processes-- influences which driver variants have been observed, although this differs significantly between tumor suppressor and oncogenes. The role of selection is apparent in some of the latter, the observed and unobserved driver mutations of which are equally likely to occur. The number of potential driver mutations in a cancer gene roughly determines how many mutations are available for detection across newly sequenced tumors.Competing Interest StatementThe authors have declared no competing interest.