Journal
CLINICAL CANCER RESEARCH
Volume 15, Issue 8, Pages 2905-2912Publisher
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/1078-0432.CCR-08-2914
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Funding
- National Natural Science Foundation of China [30870736]
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Purpose: To determine the clinical characteristics, prognosis, and treatment outcome for patients with nasal natural killer (NK)/T-cell lymphoma (N-NKTL) and Waldeyer ring NK/T-cell lymphoma (WR-NKTL). Experimental Design: A total of 145 patients with N-NKTL and 95 patients with WR-NKTL were compared. Results: Compared with N-NKTL, WR-NKTL exhibited distinct differences in clinical features with a propensity for nodal involvement, more advanced stages, low elevated lactate dehydrogenase, intermediate chemosensitivity, and a favorable prognosis. Compared with patients with WR-NKTL, patients with N-NKTL were associated with a lower overall response (54% versus 89%) and higher persistent or progressive disease after initial chemotherapy (46% versus 11%; P = 0.000). The 5-year overall survival and progression-free survival rates were 67% and 56% for N-NKTL and 65% and 47% for WR-NKTL, respectively. Patients with stage II WR-NKTL showed favorable prognosis compared with those with stage II N-NKTL. Compared with radiotherapy alone, patients with early-stage WR-NKTL that received radiotherapy and chemotherapy showed a superior progression-free survival and improved overall survival. In contrast, the addition of chemotherapy to radiotherapy did not provide any survival benefit for patients with early-stage N-NKTL. Conclusions: N-NKTL and WR-NKTL represent heterogeneous groups with variable clinical features, responses, prognosis, and treatment options.
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