Journal
AMERICAN JOURNAL OF CLINICAL ONCOLOGY-CANCER CLINICAL TRIALS
Volume 43, Issue 4, Pages 257-262Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/COC.0000000000000647
Keywords
lymphoma; extranodal NK; T-cell; natural killer; T-cell lymphoma; dexamethasone; L-asparaginase; vincristine; LVD regimen; intensity-modulated radiation therapy
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Objectives: Natural killer/T-cell lymphoma (NKTCL) is aggressive, and carries a poor prognosis worldwide. This retrospective study aimed to evaluate the clinical efficacy and safety of the LVD regimen (L-asparaginase, vincristine, and dexamethasone) combined with intensity-modulated radiation therapy (IMRT) for the treatment of early-stage nasal NKTCL in a Chinese population. Methods: The clinical data were collected from patients treated between March 2010 and January 2017. Patients received LVD chemotherapy combined with IMRT, and were followed for 30 to 90 months. All received radiotherapy at the end of the first/second cycle of chemotherapy. The survival curves were generated by the Kaplan-Meier method. Results: Among 94 patients who received 2 to 6 cycles (mean, 4 cycles) of treatments, 56 and 25 achieved complete and partial remission, respectively; 2 and 11 experienced stable disease and progressive disease. The overall objective response was 86.2%. Patients with elevated lactate dehydrogenase and skin invasion had a lower objective response rate. The progression-free survival rates at 1, 3, and 5 years were 90.3%, 73.5%, and 71.3%; the corresponding overall survival rates were 91.4%, 74.3%, and 74.3%. The main adverse events were myelosuppression (63.8% grades I to II, 12.8% grade III), gastrointestinal symptoms (63.8% grades I to II), hepatic lesion (55.3% grades I to II), hypoproteinemia (46.8% grades I to II), skin allergies (77.7% grades I to II, 3.2% grade III), and oral mucosal lesions (44.7% grades I to II, 33% grade III). No severe pancreatitis, anaphylaxis, or toxicity-related death was observed. Conclusion: In patients with early-stage nasal NKTCL, our LVD-IMRT regimen produced excellent, durable therapeutic benefit in most patients, with acceptable toxicity and no acute mortality.
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