The abstract is read at the publisher; the summary is JClub's.
Optical mapping of lung tissues across stages shows CGRs often form through hierarchical nested structural variations, yielding a chromodiadochi cascade rather than break-fusion-bridge, chromothripsis, or chromoplexy.
- Why it matters: CGR architectures and origins in lung tumor evolution are unclear, limiting how genomic instability trajectories can be reconstructed from normal, benign, and advanced disease states.
- What they did: The study profiled normal, benign lesions, and advanced carcinomas with optical mapping, then used omcplR with the genome-graph framework to resolve CGR architectures and predict genesis.
- The result: Early intra-chromosomal junctions cluster in specific chromatin domains, while late advanced-tumor junctions occur in more heterogeneous contexts and show signs of positive selection, and a composite alteration signature tracks progressive structural disorganization.
The findingWhy it mattersWhat they didThe result
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