The correct reference is “Cheng, X.; Wu, H.; Jin, Z.J.; Ma, D.; Yuen, S.; Jing, X.Q.; Shi, M.M.; Shen, B.Y.; Peng, C.H.; Zhao, R.; et al. Up-regulation of chemokine receptor CCR4 is associated with Human Hepatocellular Carcinoma malignant behavior. The gene discussed is CCR4; the disease is hepatocellular carcinoma.