PIK3CA and breast cancer: The results of the Kaplan Meier plotter showed that in 65 clinical samples, high expression of PIK3CA (HR = 2.45(1.19–5.04), logrank P = 0.012) and HRAS (HR = 2.43(1.18–5.01), logrank P = 0.013) significantly reduced the survival rate of BC patients (Fig. 4A and B).