Overall survival in low and high clinical risk groups.

Kaplan-Meier curves of OS in patients with DLBCL of low clinical risk (A, IPI score, 0-2) and high clinical risk (B, IPI score, 3-5) grouped on the basis of BCL-6 gene expression. BCL-6 greater than 1.3, ▴; BCL-6 no more than 1.3, ▪.