OR4F3 and hepatocellular carcinoma: As illustrated in Figure 3A, the absolute amounts of OR4F3 and OR4F17 approximately 9-fold and 16-fold higher in the CHB samples (P < 0.005), respectively, and 5-fold and 13-fold higher in the HBV-LC and HBV-HCC samples (P < 0.05), respectively, relative to healthy controls.