As shown in Supplementary Fig. S1g,h, positive associations were found between low LLGL2 mRNA expression and longer DFS and OS in ERα-positive breast cancer patients receiving adjuvant tamoxifen therapy (P = 0.016 and P = 0.018, respectively)….As shown in Supplementary Fig. S2g, positive associations were identified between low SLC7A5 mRNA expression and longer DFS in ERα-positive breast cancer patients receiving adjuvant tamoxifen therapy (P = 0.014)....As shown in Fig. 1e,f, LLGL2low/SLC7A5low showed longer survival than LLGL2high/SLC7A5high and a positive trend of longer survival compared with other combination groups in ERα-positive breast cancer patients receiving adjuvant tamoxifen therapy.