Overall survival and recurrence-free survival analysis plots of PLCB1-4. Overall survival analysis plot of (A) PLCB1, (B) PLCB2, (C) PLCB3 and (D) PLCB4; recurrence-free survival analysis plot (E) PLCB1, (F) PLCB2, (G) PLCB3 and (H) PLCB4; joint-effects analysis of (I) α-fetoprotein and (J) PLCB1 for overall survival and recurrence-free survival. Group 1, AFP low expression and PLCB1 low expression; Group 2, AFP low expression and PLCB1 high expression, and AFP high expression and PLCB1 low expression; Group 3, AFP high expression and PLCB1 high expression; Group I, AFP low expression and PLCB1 low expression; Group II, AFP low expression and PLCB1 high expression, and AFP high expression and PLCB1 low expression; Group III, AFP high expression and PLCB1 high expression. PLCB, phospholipase C β.