Relative frequencies of marker positivity in gallbladder and colorectal cancer

Marker Frequency in Gallbladder Cancer Frequency in Colorectal Cancer
CA19-9 75% [18] 73-92% [19,20]
CEA 63-82% [18,21] 80-81% [22,23]
CDX-2 28-72% [24,25] 60-98% [22,24]
CK7 81-100% [26] 3-17% [20,28]
CK20 10-17% [20,26] 71-100% [20,27,28]