ROC curve. ROC plot for individual FISH probe parameters (PTEN%loss, CEP7%abnorm, MYC%gain, CEP8%abnormal) and the 4-probe combination. Data were calculated from the FISH evaluation of the 17 benign ROI (histologically benign regions surrounding the tumour) and 26 BPH specimens. The ROC plot for the 4-probe combination of the 33 tumour ROI and 26 BPH specimens are also shown here. The AUC of the ROC curves are shown in the table.