Absolute lymphocyte count is a novel prognostic indicator in extranodal natural killer/T-cell lymphoma, nasal type.
Annals of oncology : official journal of the European Society for Medical Oncology(2010)
摘要
BACKGROUND:extranodal natural killer (NK)/T-cell lymphoma (ENKL) is a heterogeneous entity with poor survival, requiring risk stratification in affected patients. We proposed absolute lymphocyte count (ALC) as a new prognostic factor in ENKL.
PATIENTS AND METHODS:we retrospectively analyzed 128 patients newly diagnosed with ENKL. Independent prognostic factors of survival were determined by Cox regression analysis.
RESULTS:patients with low ALC (<1.0 × 10(9)/l) at diagnosis tended to have more adverse clinical features. Patients with high ALC (≥1.0 × 10(9)/l) at diagnosis had better overall survival (OS; P < 0.0001) and progression-free survival (PFS; P<0.0001), and achieved higher complete remission rates (P=0.001). Multivariate analysis with known prognostic factors showed that ALC, B symptoms and advanced stage were independent predictors for OS and PFS. Using the International Prognostic Index, Prognostic Index for Peripheral T-cell lymphoma unspecified, or Korean Prognostic Index for nasal NK/T-cell lymphoma, the majority of patients were in the low-risk category (with no or one adverse factor). ALC was helpful to differentiate the low-risk patients with different survival outcomes (P < 0.0001).
CONCLUSIONS:our data suggest that ALC at diagnosis is a novel, powerful predictor of prognosis in ENKL. Immune status at diagnosis might have an important influence on survival in patients with ENKL.
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