BDP1 and triple-negative breast carcinoma: BDP1 copy number is significantly decreased in triple-negative breast cancer, p = 1.04 × 10−21, n = 3785 samples across three datasets [40,44,47], as shown in Figure 5A. Approximately 70% of TNBCs have been demonstrated to undergo deletions, including 5q13-14 [51], and BDP1 is located at 5q13.2.