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- W2897679375 abstract "1548 Background: Analysis of tumour samples for biomarker discovery, personalised health care and disease stratification is becoming increasingly important. Methods to detect somatic mutations are often limited by the requirement for a significant amount of input DNA, low sensitivity or low sample throughput. The aim of this work was to obtain a comprehensive mutation profile of tumour samples taken from patients enrolled on two Phase II clinical trials. A Sequenom based approach was used to determine mutation profiles for the samples so that these could be correlated with response at some future date. Methods: After successfully piloting the Sequenom MassArray 4 platform on formalin fixed paraffin embedded (FFPE) tumour samples and tumour cell line admixes, we ran an exploratory analysis of 177 melanoma and 230 non small cell lung cancer (NSCLC) FFPE samples collected from two phase II clinical trials. DNA was extracted from the FFPE samples using the QIAmp DNA FFPE Tissue Kit (Qiagen). We designed a panel of 86 assays in 14 genes covering approximately 160+ mutations. Mutations were chosen based on mutation frequency and biological significance in these tumour types. Results: Using this approach we were able to detect concomitant mutation profiles in a significant percentage of samples using only approximately 20uL of FFPE DNA (500 copies/µL average). Mutation status concordance was over 97% in BRAF and KRAS when compared to data generated via other approaches (sequencing, ARMS). Conclusions: Using Sequenom to screen tumour material, collected during clinical trials, is a feasible, rapid and comprehensive approach. Such an approach can be used to identify mutation profiles which correlate with patient response, potentially identify further patient stratification and help generate new hypotheses for further exploration." @default.
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- W2897679375 date "2012-05-20" @default.
- W2897679375 modified "2023-09-25" @default.
- W2897679375 title "Analysis of mutations in formalin-fixed paraffin-embedded (FFPE) tumor samples from two phase II clinical trials using a Sequenom-based approach." @default.
- W2897679375 doi "https://doi.org/10.1200/jco.2012.30.15_suppl.1548" @default.
- W2897679375 hasPublicationYear "2012" @default.
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