GDPE/CEOPE Compared With CEOPE as the First-line Therapy for Newly Diagnosed Patients With Peripheral T-Cell Lymphoma

Peripheral T-cell Lymphoma (PTCL) is a heterogenic malignancy with poor outcome. Five-year PFS (progression-free survival) and OS (overall survival) for these patients received classic CHOP regimen is less than 30%. High-dose intensive chemotherapy doesn't demonstrate better response. At present, there is no standardized treatment protocol for this kind of lymphoma. So, clinical trials are encouraged by NCCN for those patients.

For the less efficacy of CHOP or CHOP-like regimen, multi-drug combination strategy has been the therapy tendency in PTCL. Zhang et al, reported that GDP compared with CHOP as the therapy strategy for PTCL-NOS (Not Otherwise Specified). The response rate was 78.57% in GDP group and 60.00% in CHOP group, respectively. DFS (disease-free survival) was 9.79 and 4.2 months in above two groups. They concluded that GDP is superior to CHOP. The main side-effect of two regimens is hematological toxicity. Combination with etoposide can improve the outcome of some patients with high risk factors. Furthermore, high-dose combined with ASCT (autologous stem cell transplantation) has been the first-line therapy for PTCL. Some refractory/relapsed patients with PTCL will benefit from allogeneic bone marrow transplantation. However, about 30% patients with PTCL have no chance to receive ASCT for multiple reasons. So, it is urgent to explore new combination-therapy regimen to improve the outcome for patients with PTCL.

The aim of our study is to compare the response and survival rate of GDPE/CEOPE (gemcitabine, cis-platinum, etoposide, and dexamethasone/cyclophosphamide, vincristine, pharmorubicin, etoposide, and prednisone) with those of CEOPE (/cyclophosphamide, vincristine, pharmorubicin, etoposide, and prednisone ) regimen, looking forward to its superiority in efficacy and safety for the newly diagnosed adult patients with PTCL.