The prognosis of patients with progressive and recurrent NK/T cell lymphoma is poor partially due to lack of effective treatment. L-asparaginase was reported to be effective in this setting by several case reports. The investigators aim to evaluate the efficacy and toxicity of L-asparaginase monotherapy in a prospective phase II study.
The purpose of this study is to evaluate the efficacy and tolerability of L-asparaginase monotherapy as salvage treatment in patients with NK/T cell lymphoma