RB1 and leiomyoma: Hormone receptor expressions in leiomyomas between groups A and B showed no significant difference in the Allred score (total score) of ER, PRAB, and PRB (6 vs. 6.5, P = 0.543, 6 vs. 6.5, P = 0.494 and 7 vs. 7, P = 0.896, respectively).