Non-GCB tumors predicted worse PFS ( hazard ratio -LSB- HR -RSB- , @ ; @ % CI , @ to @ ; P = @ ) and OS ( HR , @ ; @ % CI , @ to @ ; P = @ ) among patients treated with R-CHOP compared with patients who received R-ACVBP , whereas there were no significant survival differences between these regimens among patients with GCB tumors .