AFP and neoplasm: And there were no statistically significant differences in the five blood tumor indicators carcinoembryonic antigen (CEA, P = 0.405), alpha-fetoprotein (AFP, P = 0.459), cancer antigen 199 (Ca199, P = 0.461), Ca125 (P = 0.732), and Ca153 (P = 0.147) between the two groups.