Based on the observations described above, we have previously used microarray analysis to compare RNA samples isolated from 40 malignant breast tumour tissues and 40 normal/benign breast tissues, and identified BRCA1‐interacting C‐terminal helicase 1 (BRIP1), showing fivefold induction, as a potential gene that might promote BC progression..7 Here, BRCA1 is linked to breast cancer.