COL11A1 and benign neoplasm: Average COL11A1 mRNA expression levels gradually increased from normal breast (n=30), benign tumors (n = 30), LN (0) tumors (n = 52), LN (1–3) tumors (n = 21) to LN (4–9) tumors (n = 15), and then decreased in LN (≥ 10) tumors (n = 19), as shown in Figure 2.