期刊
ANNUAL REVIEW OF CANCER BIOLOGY, VOL 5, 2021
卷 5, 期 -, 页码 221-234出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-cancerbio-051320-124252
关键词
cancer; genomics; oncogene; mutant allele; zygosity; selection; evolution
类别
资金
- National Institutes of Health [P30 CA008748, U54 OD020355, R01 CA207244, R01 CA204749, R01 CA245069]
The search for somatic mutations that drive human tumors has been a focus in recent cancer research, with less emphasis on understanding the serial genetic evolution of driver mutations. Changes in mutant oncogene zygosity are common and can lead to selective growth advantages. Further research is needed to fully understand the implications of mutant allele imbalance in tumor biology, cancer evolution, and response to anticancer therapy.
The search for somatic mutations that drive the initiation and progression of human tumors has dominated recent cancer research. While much emphasis has been placed on characterizing the prevalence and function of driver mutations, comparatively less is known about their serial genetic evolution. Indeed, study of this phenomenon has largely focused on tumor-suppressor genes recessive at the cellular level or mechanisms of resistance in tumors with mutant oncogenes targeted by therapy. There is, however, a growing appreciation that despite a decades-old presumption of heterozygosity, changes in mutant oncogene zygosity are common and drive dosage and stoichiometry changes that lead to selective growth advantages. Here, we review the recent progress in understanding mutant allele imbalance and its implications for tumor biology, cancer evolution, and response to anticancer therapy.
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