期刊论文详细信息
BMC Cancer
Translating tumor biology into personalized treatment planning: analytical performance characteristics of the Oncotype DX®Colon Cancer Assay
Technical Advance
Drew Watson1  Jayadevi Krishnakumar1  Kim M Clark-Langone1  Chithra Sangli2 
[1] Genomic Health, Inc., 94063, Redwood City, CA, USA;St. Jude Medical, 94086, Sunnyvale, CA, USA;
关键词: National Comprehensive Cancer Network;    Recurrence Score;    Relative Standard Deviation;    Clinical Validation Study;    Colon Cancer Recurrence;   
DOI  :  10.1186/1471-2407-10-691
 received in 2010-07-01, accepted in 2010-12-23,  发布年份 2010
来源: Springer
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【 摘 要 】

BackgroundThe Oncotype DX® Colon Cancer Assay is a new diagnostic test for determining the likelihood of recurrence in stage II colon cancer patients after surgical resection using fixed paraffin embedded (FPE) primary colon tumor tissue. Like the Oncotype DX Breast Cancer Assay, this is a high complexity, multi-analyte, reverse transcription (RT) polymerase chain reaction (PCR) assay that measures the expression levels of specific cancer-related genes. By capturing the biology underlying each patient's tumor, the Oncotype DX Colon Cancer Assay provides a Recurrence Score (RS) that reflects an individualized risk of disease recurrence. Here we describe its analytical performance using pre-determined performance criteria, which is a critical component of molecular diagnostic test validation.ResultsAll analytical measurements met pre-specified performance criteria. PCR amplification efficiency for all 12 assays was high, ranging from 96% to 107%, while linearity was demonstrated over an 11 log2 concentration range for all assays. Based on estimated components of variance for FPE RNA pools, analytical reproducibility and precision demonstrated low SDs for individual genes (0.16 to 0.32 CTs), gene groups (≤0.05 normalized/aggregate CTs) and RS (≤1.38 RS units).ConclusionsAnalytical performance characteristics shown here for both individual genes and gene groups in the Oncotype DX Colon Cancer Assay demonstrate consistent translation of specific biology of individual tumors into clinically useful diagnostic information. The results of these studies illustrate how the analytical capability of the Oncotype DX Colon Cancer Assay has enabled clinical validation of a test to determine individualized recurrence risk after colon cancer surgery.

【 授权许可】

CC BY   
© Clark-Langone et al; licensee BioMed Central Ltd. 2010. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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