The Quintiles Comprehensive Cancer Panel (QCCP) is a targeted sequencing assay that analyzes genomic variation in 223 cancer, DNA repair, and pharmacogenomic genes using Illumina sequencing platforms. It was analytically validated to CLIA standards, with a sensitivity over 99% for SNVs and indels at certain allele frequencies and a specificity over 99%. The QCCP can detect point mutations, insertions, deletions, and structural rearrangements to help identify biomarkers predictive of response to cancer therapies.