Table 1.
Diagnostic performance of multi-panel biomarkers and CA19-9 for pancreatic adenocarcinoma in development cohort
| Marker | Sensitivity (95% CI) |
Specificity (95% CI) |
Accuracy (95% CI) |
PPV (95% CI) |
NPV (95% CI) |
Classic FNR† (95% CI) |
AUC (95% CI) |
p-value‡ |
|---|---|---|---|---|---|---|---|---|
| CT |
48.0 (34.2–61.8) |
100.0 (100.0–100.0) |
90.4 (86.9–93.9) |
100.0 (100.0–100.0) |
89.5 (85.7–93.3) |
52.0 (38.2–65.8) |
74.0 (67.0–81.0) |
< .0001 |
| CA19-9 |
76.0 (64.2–87.8) |
82.2 (76.9–87.5) |
81.0 (76.1–85.8) |
51.4 (40.0–62.7) |
93.3 (89.6–96.9) |
24.0 (12.2–35.8) |
79.1 (72.6–85.6) |
0.2795 |
| IL-7R |
66.0 (52.9–79.1) |
56.8 (50.2–63.3) |
58.5 (52.6–64.3) |
25.6 (18.1–33.1) |
88.1 (82.8–93.4) |
34.0 (20.9–47.1) |
61.4 (54.0–68.8) |
0.0217 |
| PLD4 |
90.0 (81.7–98.3) |
52.3 (45.7–58.8) |
59.2 (53.4–65.0) |
29.8 (22.5–37.1) |
95.9 (92.3–99.4) |
10.0 (1.7–18.3) |
71.1 (65.8–76.5) |
0.3618 |
| ID3 |
62.0 (48.5–75.5) |
71.6 (65.7–77.6) |
69.9 (64.4–75.3) |
33.0 (23.5–42.5) |
89.3 (84.8–93.9) |
38.0 (24.5–51.5) |
66.8 (59.4–74.2) |
0.0107 |
| Biomarker panel |
84.0 (73.8–94.2) |
78.8 (73.5–84.2) |
79.8 (75.0–84.6) |
47.2 (36.8–57.6) |
95.6 (92.7–98.6) |
16.0 (5.8–26.2) |
81.4 (75.6–87.2) |
Reference |
Values are % (95% confidence interval)
Cut-off points: CA19-9 > 37.0, IL-7R > 1025.40733, PLD4 < 18.8693, ID3 > 8.7021, Multi-panel > 0.22016
CT, computed tomography; PPV, positive predictive value; NPV, negative predictive value; FNR, false negative rate; AUC, area under curve; CA19-9, carbohydrate antigen 19–9; IL-7R, interleukin-7 receptor, PLD4, phospholipase D4; ID3, inhibitor of DNA binding 3
†, Classic FNR calculated False Negative/(True Positive + False Negative)
‡, p−value compared with multi−panel biomarker for FNR