CTCs have poorer performances compared to AFP. HCC vs. CLD:AFP ratio: 95.7%/90.5%, 0.99CK19 (+) CTCs: 87.1%/82.5%CD90 (+) CTCs: 81%/89.6%CD133 (+) CTCs: 40%/6.3% The gene discussed is THY1; the disease is congenital secretory chloride diarrhea 1.