TP53 and acinar cell carcinoma: On the other hand, Geyer et al. have provided molecular evidence that microglandular adenosis and AcCC represent the low-grade spectrum of TNBC lesions with indolent clinical course and share some molecular features (e.g., TP53 mutations and common copy number alterations, such as gains of 1q, 2q, 7p, and 8q and losses of 3p, 5q, 6q, 14q, 17p, and 17q, Table 3) [49,45].