Figure 4

Five- year disease- free survival curves of patients without adjuvant chemotherapy. No patient with HLA class I positive expression (black circle) relapsed. Twenty-nine percent of patients with HLA dull and negative expression (white circle) relapsed. For patients without adjuvant chemotherapy, there was a significant difference in the 5-year DFS between patients with HLA class I positive expression and those with dull and negative expression (P = 0.03).