Disease phenotype discriminatory capacity of a model in which Col5a2 expression is used as input. ROC (receiving operating characteristic) curves obtained when applying the model on independently generated datasets are shown. Diagonal line represents classification performance obtained from a random classification model. P values associated with AUCs estimate their statistical significance in relation to random model. ROC curves and AUC values shown refer to test results on: derivation, independent qPCR, independent mice microarray and human microarray datasets.