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Analysis of somatic mutations across the kinome reveals loss-of-function mutations in multiple cancer types
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Analysis of somatic mutations across the kinome reveals loss-of-function mutations in multiple cancer types
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Analysis of somatic mutations across the kinome reveals loss-of-function mutations in multiple cancer types
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Journal Article
Analysis of somatic mutations across the kinome reveals loss-of-function mutations in multiple cancer types
2017
Overview
In this study we use somatic cancer mutations to identify important functional residues within sets of related genes. We focus on protein kinases, a superfamily of phosphotransferases that share homologous sequences and structural motifs and have many connections to cancer. We develop several statistical tests for identifying Significantly Mutated Positions (SMPs), which are positions in an alignment with mutations that show signs of selection. We apply our methods to 21,917 mutations that map to the alignment of human kinases and identify 23 SMPs. SMPs occur throughout the alignment, with many in the important A-loop region, and others spread between the N and C lobes of the kinase domain. Since mutations are pooled across the superfamily, these positions may be important to many protein kinases. We select eleven mutations from these positions for functional validation. All eleven mutations cause a reduction or loss of function in the affected kinase. The tested mutations are from four genes, including two tumor suppressors (TGFBR1 and CHEK2) and two oncogenes (KDR and ERBB2). They also represent multiple cancer types, and include both recurrent and non-recurrent events. Many of these mutations warrant further investigation as potential cancer drivers.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 692/4028
/ 96/1
/ 96/106
/ 96/109
/ 96/95
/ Animals
/ Cancer
/ Checkpoint Kinase 2 - genetics
/ Humanities and Social Sciences
/ Humans
/ Kinases
/ Mice
/ Mutation
/ Phosphotransferases - chemistry
/ Phosphotransferases - genetics
/ Phosphotransferases - metabolism
/ Receptor, Transforming Growth Factor-beta Type I - genetics
/ Science
