COL6A2 and breast cancer: Results showed that high expression of COL14A1 (HR = 0.56 [0.4–0.79], P=0.00081), COL6A2 (HR = 0.74 [0.6–0.93], P=0.0082), COL6A1 (HR = 0.59 [0.45–0.78], P=0.00012), COL5A1 (HR = 0.76 [0.59–0.98], P=0.034), and collagen type I α 1 chain (COL1A1) (HR = 0.8 [0.65–0.99], P=0.044) were associated with poor overall survival rates for BC patients.