AFP and hepatocellular carcinoma: Among these three groups of case controls, the NBNC-AFP(-)-HCC group was found to be significantly different from the B-AFP(+)-HCC, NBNC-AFP(+)-HCC, and B-AFP(-)-HCC groups in terms of patients’ DFS duration (P = 0.001, P = 0.011, and P = 0.015, respectively).