Efficacy of pegaspargase combined with GEMOX regimen on extranodal natural killer/T-cell lymphoma and its influence on coagulation function
2016
Objective
To evaluate the efficacy of pegaspargase (PEG-ASP) combined with GEMOX regimen for the treatment of extranodal natural killer (NK) /T-cell lymphoma (ENKL), and to observe the changes of coagulation function.
Methods
35 patients with histologically confirmed ENKL were enrolled from January 2010 to December 2014. All patients received 180 cycles of PEG-ASP combined with GEMOX chemotherapy and the efficacies were observed. The coagulation items such as prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen (Fbg) and international normalized ratio (INR) were tested respectively on day 1st, day 8th and day 14th of every treatment cycle.
Results
Among 35 patients, 11 patients (31.43 %) were in stage Ⅰ-Ⅱ, and 24 patients (68.57 %) were in stage Ⅲ-Ⅳ. All patients were subjected to 180 cycles of PEG-ASP combined with GEMOX chemotherapy, and each case was estimated to receive 6 cycles. The overall response (CR+PR) rate (ORR) was 71.43 % (25/35), the ORR was 81.82 % (9/11) in stage Ⅰ-Ⅱ group, and 66.67 % (16/24) in stage Ⅲ-Ⅳ group. The increased PT and APTT and decreased Fbg were observed on day 8th of the chemotherapy. The increased APTT and decreased Fbg were still observed on day 14th of the chemotherapy. Compared the data of patients one day before chemotherapy with healthy persons, the changes had statistical significance (P < 0.05).
Conclusions
PEG-ASP combined with GEMOX regimen in the treatment of ENKL is safer and more effective compared with traditional chemotherapy, but the abnormal alternations of coagulation might be common during therapy. Dealing with the bleeding risk and supplement with plasma, PPSB or Fbg in time should be necessary.
Key words:
Extranodal NK/T cell lymphoma; Pegaspargase; Treatment outcome; Routine coagulation function
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