CCND1 and breast cancer: Most of the genetic alterations identified in this study are common in breast cancer, such as TP53 (44%–48.6%) [16, 17], CCND1 (11%–12.9%) [16, 18], FGF19 (8%–30%) [16, 17, 19], GATA3 (8%–11%) [16, 17], KMT2C (8.8%) [20] and BRCA2 (5%–14%) [16, 19].