From: The value of CDX2 and cytokeratins 7 and 20 expression in differentiating colorectal adenocarcinomas from extraintestinal gastrointestinal adenocarcinomas: cytokeratin 7-/20+ phenotype is more specific than CDX2 antibody
Sensitivity
Specificity
PPV
NPV
CK7-/CK20+
63.6%
96.7%
96.2%
67.2%
CDX2 > 5%
96.6%
54.9%
73.5%
92.6%
CDX2 > 50%
78.0%
84.6%
86.8%
74.8%