What changed
The team developed ascairn, which uses 27-base rare k-mers to infer centromere types from existing short-read whole-genome sequencing data. Median inference accuracy in the performance assessment was 92.7%.
Cancer relevance
In 142 oligodendroglioma cases, breakpoints involving chromosomes 1 and 19 were mapped within centromeres. The analysis suggests that structural variation between individuals may be related to formation of the characteristic 1p/19q co-deletion.
Evidence boundary
Status: basic research / genomic method. Ascairn is not an approved clinical test or treatment, and the publication does not establish immediate utility for individual treatment decisions.
Long-term value
The method may enable researchers to revisit large short-read WGS collections and study repetitive genomic regions that were previously difficult to analyze. Clinical validation remains future work.
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