Journal
CURRENT OPINION IN GENETICS & DEVELOPMENT
Volume 25, Issue -, Pages 93-100Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.gde.2013.11.022
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Funding
- National Institutes of Health [GM083337, GM085354, CA161666]
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A recent flurry of reports correlates replication timing (RT) with mutation rates during both evolution and cancer. Specifically, point mutations and copy number losses correlate with late replication, while copy number gains and other rearrangements correlate with early replication. In some cases, plausible mechanisms have been proposed. Point mutation rates may reflect temporal variation in repair mechanisms. Transcription-induced double-strand breaks are expected to occur in transcriptionally active early replicating chromatin. Fusion partners are generally in close proximity, and chromatin in close proximity replicates at similar times. However, temporal enrichment of copy number gains and losses remains an enigma. Moreover, many conclusions are compromised by a lack of matched RT and sequence datasets, the filtering out of developmental variation in RT, and the use of somatic cell lines to make inferences about germline evolution.
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