ESR2 and prostate neoplasm: In the 4,490 prostate tumor biopsies, APUC-6 genes exhibited a robust correlation with one another, and all had strong positive correlations with ESR1, ESR2, and PGR (Spearman’s R 0.13–0.52), while the correlation with AR was relatively weak (Spearman’s R 0.06–0.20).