The copy number segmentation file with annotations (TCGA_mastercalls.abs_segtabs.fixed.txt) and the purity/ploidy file (TCGA_mastercalls.abs_tables_JSedit.fixed.txt) that was generated by ABSOLUTE software were downloaded from the above-mentioned Pan-Cancer Atlas portal. These two files were then compiled to generate the input format supported by the scarHRD R package [36] for the calculation of the counts of each HRD component (HRD-loss of heterozygosity (HRD-LOH), HRD-large-scale state transitions (HRD-LST), and HRD-telomeric allelic imbalance (HRD-TAI)) and then summarized the total HRD score. Here, we evaluated the global and geneset-specific HRD scores based on previously reported genesets across cancers.
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