The four conflicting studies used kits from Wuhan Cusabio Biotech, Usabio Biotech, Wuhan EIAab, and BioMosaics [28–31], which were also used in the other studies that found that GPC3 is a useful HCC biomarker [11, 13, 16, 19, 22, 24]. The gene discussed is GPC3; the disease is hepatocellular carcinoma.