Skip to main content
. 2013 Dec 24;2(2):285–291. doi: 10.3892/mco.2013.233

Figure 2.

Figure 2

Kaplan-Meier estimates of disease-free survival (DFS) of 70 patients based on collagen gene expression status. Patient DFS by (A) COL21A1, (B) COL22A1, (C) COL23A1 and (D) COL24A1 expression status. A total of 35 patients with head and neck squamous cell carcinoma (HNSCC) were classified as the high-expression (dotted line) and 35 patients as the low-expression group (solid line). The cut-off was determined by the median in 70 patients. DFS in patients by (E) COL22A1 and COL24A1 expression status: 17 HNSCC patients exhibited a high expression of the two genes (solid line), whereas 17 HNSCC patients exhibited a low expression of the two genes (dotted line); these differences were statistically significant (P<0.001, log-rank test).