Table 1 Diagnostic performance of biomarker combination panels for diagnosing PDA in cohort A.

From: Development of a serum protein biomarker panel for the diagnosis of pancreatic ductal adenocarcinoma using a machine learning approach

Biomarker panel

AUROC (95% CI)

F1 score (95% CI)

Accuracy (95% CI)

SN (recall) (95% CI)

SP (95% CI)

PPV (precision) (95% CI)*

NPV (95% CI)*

All-stage PDA vs. healthy control

 CA19-9, GDF15, suPAR

0.992 (0.985–0.997)

0.962 (0.939–0.981)

0.963 (0.942–0.980)

0.954 (0.915–0.984)

0.972 (0.945–0.994)

0.971 (0.944–0.994)

0.957 (0.921–0.984)

 CA19-9, GDF15, IL-8

0.987 (0.978–0.995)

0.948 (0.923–0.972)

0.949 (0.927–0.970)

0.943 (0.909–0.979)

0.956 (0.930–0.986)

0.953 (0.921–0.985)

0.945 (0.909–0.978)

 IL-8, GDF15, suPAR

0.954 (0.934–0.974)

0.877 (0.848–0.913)

0.882 (0.851–0.914)

0.862 (0.817–0.911)

0.901 (0.848–0.942)

0.893 (0.840–0.944)

0.872 (0.828–0.915)

 CA19-9, GDF15

0.983 (0.970–0.993)

0.945 (0.921–0.967)

0.946 (0.925–0.968)

0.931 (0.883–0.962)

0.961 (0.937–0.988)

0.959 (0.930–0.988)

0.935 (0.895–0.962)

 IL-8, GDF15

0.944 (0.923–0.964)

0.873 (0.842–0.908)

0.879 (0.851–0.914)

0.851 (0.804–0.898)

0.906 (0.861–0.944)

0.897 (0.847–0.941)

0.863 (0.822–0.907)

 IL-8, suPAR

0.944 (0.926–0.963)

0.861 (0.825–0.893)

0.865 (0.835–0.897)

0.856 (0.803–0.905)

0.873 (0.832–0.917)

0.866 (0.824–0.915)

0.863 (0.814–0.915)

 CA19-9

0.952 (0.919–0.973)

0.907 (0.874–0.934)

0.913 (0.882–0.935)

0.874 (0.822–0.916)

0.950 (0.917–0.975)

0.944 (0.908–0.974)

0.887 (0.843–0.919)

 IL-8

0.914 (0.886–0.946)

0.846 (0.807–0.884)

0.856 (0.817–0.887)

0.805 (0.747–0.860)

0.906 (0.862–0.943)

0.892 (0.835–0.933)

0.828 (0.770–0.873)

 GDF15

0.861 (0.822–0.894)

0.772 (0.717–0.821)

0.777 (0.736–0.819)

0.770 (0.710–0.814)

0.785 (0.720–0.853)

0.775 (0.704–0.847)

0.780 (0.721–0.822)

 suPAR

0.838 (0.792–0.871)

0.722 (0.657–0.762)

0.735 (0.680–0.773)

0.701 (0.628–0.759)

0.768 (0.698–0.830)

0.744 (0.681–0.806)

0.728 (0.659–0.783)

 HGF

0.820 (0.777–0.858)

0.729 (0.678–0.785)

0.746 (0.700–0.790)

0.695 (0.626–0.754)

0.796 (0.731–0.851)

0.766 (0.702–0.837)

0.731 (0.665–0.783)

Early-stage PDA vs. healthy control

 CA19-9, GDF15, suPAR

0.976 (0.957–0.994)

0.878 (0.794–0.938)

0.955 (0.933–0.975)

0.857 (0.725–0.939)

0.978 (0.953–0.998)

0.900 (0.813–0.989)

0.967 (0.942–0.987)

 CA19-9, GDF15, IL-8

0.961 (0.917–0.990)

0.889 (0.815–0.943)

0.960 (0.937–0.982)

0.857 (0.750–0.948)

0.983 (0.966-1.000)

0.923 (0.848-1.000)

0.967 (0.940–0.989)

 IL-8, GDF15, suPAR

0.962 (0.939–0.981)

0.775 (0.652–0.851)

0.919 (0.874–0.955)

0.738 (0.571–0.849)

0.961 (0.932–0.989)

0.816 (0.694–0.947)

0.941 (0.906–0.969)

 CA19-9, GDF15

0.950 (0.905–0.985)

0.835 (0.755–0.903)

0.942 (0.919–0.966)

0.786 (0.667–0.891)

0.978 (0.952–0.995)

0.892 (0.783–0.971)

0.952 (0.923–0.974)

 IL-8, GDF15

0.917 (0.858–0.954)

0.720 (0.585–0.812)

0.906 (0.859–0.942)

0.643 (0.493–0.774)

0.967 (0.934–0.989)

0.818 (0.684–0.938)

0.921 (0.878–0.956)

 IL-8, suPAR

0.947 (0.915–0.968)

0.709 (0.559–0.788)

0.897 (0.856–0.928)

0.667 (0.500-0.767)

0.950 (0.922–0.981)

0.757 (0.642–0.896)

0.925 (0.884–0.953)

 CA19-9

0.868 (0.774–0.933)

0.747 (0.644–0.851)

0.915 (0.881–0.953)

0.667 (0.529–0.786)

0.972 (0.949–0.994)

0.848 (0.727–0.957)

0.926 (0.895–0.959)

 GDF15

0.863 (0.812–0.916)

0.568 (0.442–0.699)

0.857 (0.814–0.910)

0.500 (0.372–0.633)

0.939 (0.909–0.971)

0.656 (0.506–0.813)

0.890 (0.850–0.939)

 suPAR

0.854 (0.773–0.908)

0.526 (0.376–0.652)

0.839 (0.789–0.881)

0.476 (0.338–0.611)

0.923 (0.882–0.956)

0.588 (0.412–0.751)

0.884 (0.835–0.929)

 HGF

0.836 (0.765–0.897)

0.543 (0.400-0.657)

0.857 (0.802–0.899)

0.452 (0.300-0.578)

0.950 (0.918–0.978)

0.679 (0.535–0.833)

0.882 (0.824–0.919)

 IL-8

0.809 (0.733–0.882)

0.727 (0.597–0.823)

0.906 (0.870–0.940)

0.667 (0.506–0.781)

0.961 (0.934–0.984)

0.800 (0.692–0.915)

0.926 (0.885–0.959)

  1. *PPV and NPV are influenced by PDA prevalence and should therefore be interpreted with caution.
  2. PDA, pancreatic ductal adenocarcinoma; AUROC, area under the receiver operating characteristic curve; 95% CI, 95% confidence interval; SN, sensitivity; SP, specificity; PPV, positive predictive value; NPV, negative predictive value; CA19-9, carbohydrate antigen 19 − 9; GDF15, growth differentiation factor 15; HGF, hepatocyte growth factor; IL-8, interleukin-8; suPAR, soluble urokinase plasminogen activator receptor.