Figure 3
From: TGF-β1, IL-6 and TNF-α in Bronchoalveolar Lavage Fluid: Useful Markers for Lung Cancer?

Receiver operating characteristic (ROC) curve was performed to evaluate the threshold value of TGF-β1 in differentiating malignant from benign pulmonary diseases.
TGF-β1 reached a sensitivity of 62.2%, a specificity of 60.6%, a positive predictive value of 67.5% and a negative predictive value of 52.6% (cut-off value: 10.85 pg/ml; area under the curve: 0.695).