ESR1 and breast cancer: Figure 9—figure supplement 1 provides data on mRNA expression of ESR1, PGR, ERBB2, MKI67, LDHA, PECAM1, and CD34 in breast cancer tissue of the different molecular subtypes. Figure 9—source data 1 provides results from correlation analyses between SLC9A1 mRNA expression and the mRNA levels for ESR1, PGR, ERBB2, SLC4A7, SLC16A1, and SLC16A3. *p<0.05, ***p<0.001. (B–G) Survival curves stratified by SLC9A1 mRNA levels in patients with different breast cancer subtypes.