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Open AccessHighly AccessResearch article

Prediction potential of candidate biomarker sets identified and validated on gene expression data from multiple datasets

Michael Gormley email, William Dampier email, Adam Ertel email, Bilge Karacali email and Aydin Tozeren email

School of Biomedical Engineering, Drexel University, Philadelphia, PA, USA

author email corresponding author email

BMC Bioinformatics 2007, 8:415doi:10.1186/1471-2105-8-415

Published: 26 October 2007

Additional files

Additional file 1:

Prediction error of DLDA classifiers on lymphoma (Broad) and renal carcinoma (Zhao) datasets. Classifiers trained to predict relapse-free status. E is the mean 1-AUC of the corresponding set of ROC curves, calculated as described in the Methods section. Error bars show empirical 95% CIs.

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Additional file 2:

Significance of prediction error (P values) of DLDA classifiers trained to predict molecular phenotype. Bold entries indicate significant P-values < = 0.01.

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Additional file 3:

Kaplan-Meier plots of survival rates for tumor classes with different classification/cross-validation methods. Classifiers trained on the basis of relapse-free status on diffuse large B-cell lymphoma dataset GSE4475. Column 1: Weighted-voting algorithm. Column 2: DLDA. Row 1: Leave-one out cross-validation. All data used for training and testing. Row 2: Training and test sets selected randomly from the dataset. Training based on leave-one out cross-validation.

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