Genome ResJClub
Fast and accurate resolution of ecDNA sequence using Cycle-Extractor.
Genome Research · · Journal Article · Open access
Faizrahnemoon, Luebeck + more
Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
Cycle-Extractor reconstructs ecDNA cycles from breakpoint graphs with accuracy comparable to CoRAL on simulated data and matches CoRAL on cancer cell lines while running about 40× faster.
- Why it matters: ecDNA circular structures drive oncogene amplification and worse outcomes, but cycle reconstruction from sequencing data is difficult, especially across short- and long-read inputs.
- What they did: CE formulates cycle extraction as a mixed-integer linear program plus a traversal step, using breakpoint graphs from short or long reads and benchmarking against CoRAL, Decoil, and AmpliconArchitect on simulations and cancer cell lines.
- The result: In PC3 cells with MYC, long-read CE reconstructs a substantially larger, higher-copy ecDNA sequence of 4.2 Mbp versus 690 kbp from short reads, and CRISPR-CATCH supports the large molecule.
The findingWhy it mattersWhat they didThe result
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