S100A1 and breast cancer: As shown in Fig. 2, for S100A8 (Fig. 2E: HR = 1.93, 95%CI: 1.31–2.86, p = 0.0007) and S100A9 (Fig. 2F: HR = 1.72, 95%CI: 1.17–2.54, p = 0.0057), high mRNA expression of those S100A members were correlated to lower OS in luminal A type breast cancer patients.