Fig. 1

The expression of BCAR4 in breast cancer tissues and plasma samples. A and B BCAR4 expression in breast cancer tissues as compared to the noncancerous breast tissues from the TCGA and StarBase V3.0. C RT-qPCR assay for BCAR4 expression in plasma from 80 breast cancer patients and 80 healthy controls. D RT- qPCR assay for BCAR4 expression in plasma from stage I and II (n = 30) and stage III and IV (n = 50) breast cancer patients. E RT- qPCR assay for BCAR4 expression in plasma from 20 paired preoperative and postoperative breast cancer patients. F RT-qPCR assay for BCAR4 expression in breast cancer cell lines and the noncancerous breast epithelial cell line HBL-100.Results were presented as the mean ± SD. *P < 0.05,  ** P < 0.01, and  ***P < 0.001