ESR1 and leiomyoma: We were also able to confirm that levels of DARC (P < 0.05), SLC2A5 (P < 0.05), ID3 (P < 0.02), LRNF5 (P < 0.01), UGT8 (P = 0.04), ESR1 (P < 0.01), and PGR (P < 0.01) were significantly lower when luteal phase leiomyomas were compared with proliferative phase leiomyomas (Supplemental Fig. 2).