Figure 1. The expression level of BRCA1 in tumors. (A) BRCA1 was highly expressed in many solid tumors, including BRCA (B, C). The ROC curve area was 0.766 (D), indicating BRCA1 was a biomarker of diagnostic of BRCA. P-values were calculated with two-tailed unpaired Student’s t-test, *p < 0.05, **p < 0.01, ***p < 0.001.