Widespread Selection for Oncogenic Mutant Allele Imbalance in Cancer.
Widespread Selection for Oncogenic Mutant Allele Imbalance in Cancer.
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DOI:
10.1016/j.ccell.2018.10.003
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发表时间:
2018-11-12
期刊:
影响因子:
50.3
通讯作者:
Taylor BS
中科院分区:
文献类型:
--
作者:
Bielski CM;Donoghue MTA;Gadiya M;Hanrahan AJ;Won HH;Chang MT;Jonsson P;Penson AV;Gorelick A;Harris C;Schram AM;Syed A;Zehir A;Chapman PB;Hyman DM;Solit DB;Shannon K;Chandarlapaty S;Berger MF;Taylor BS
Driver mutations in oncogenes encode proteins with gain-of-function properties that enhance fitness. Heterozygous mutations are thus viewed as sufficient for tumorigenesis. We describe widespread oncogenic mutant allele imbalance in 13,448 prospectively characterized cancers. Imbalance was selected for through modest dosage increases of gain-of-fitness mutations. Negative selection targeted haplo-essential effectors of the spliceosome. Loss of the normal allele comprised a distinct class of imbalance driven by competitive fitness, which correlated with enhanced response to targeted therapies. In many cancers, an antecedent oncogenic mutation drove evolutionarily dependent allele-specific imbalance. In other instances, oncogenic mutations co-opted independent copy number changes via the evolutionary process of exaptation. Oncogenic allele imbalance is a pervasive evolutionary innovation that enhances fitness and modulates sensitivity to targeted therapy.
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