期刊
ONCOTARGET
卷 7, 期 33, 页码 52888-52899出版社
IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.9184
关键词
precision oncology; genomics; sequencing; prostate cancer
资金
- Stand Up To Cancer - Prostate Cancer Foundation Prostate Dream Team Translational Cancer Research Grant
- NIH Prostate Specialized Program of Research Excellence grant [P50CA69568]
- Early Detection Research Network grant [UO1 CA111275]
- PCF Young Investigator Awards
- Department of Defense Prostate Cancer Research Program [PC131820, PC140799, PC140519]
- NIH [P50CA097186, P01CA163227, P01CA085859]
Advances in next generation sequencing technologies provide approaches to comprehensively determine genomic alterations within a tumor that occur as a cause or consequence of neoplastic growth. Though providers offering various cancer genomics assays have multiplied, the level of reproducibility in terms of the technical sensitivity and the conclusions resulting from the data analyses have not been assessed. We sought to determine the reproducibility of ascertaining tumor genome aberrations using whole exome sequencing (WES) and RNAseq. Samples of the same metastatic tumors were independently processed and subjected to WES of tumor and constitutional DNA, and RNAseq of RNA, at two sequencing centers. Overall, the sequencing results were highly comparable. Concordant mutation calls ranged from 88% to 93% of all variants including 100% agreement across 154 cancer-associated genes. Regions of copy losses and gains were uniformly identified and called by each sequencing center and chromosomal plots showed nearly identical patterns. Transcript abundance levels also exhibited a high degree of concordance (r(2) >= 0.78; Pearson). Biologically-relevant gene fusion events were concordantly called. Exome sequencing of germline DNA samples provided a minimum of 30X coverage depth across 56 genes where incidental findings are recommended to be reported. One possible pathogenic variant in the APC gene was identified by both sequencing centers. The findings from this study demonstrate that results of somatic and germline sequencing are highly concordant across sequencing centers that have substantial experience in the technological requirements for preparing, sequencing and annotating DNA and RNA from human biospecimens.
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