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Abstract
Baseline anemia is a relevant prognostic factor in the overall population of non-Hodgkin's lymphoma (NHL) patients, and studies focusing on elderly NHL are awaited. We conducted a pooled analysis of a cohort of comparable patients enrolled (1993 – 2001) in three multicenter clinical trials on use of a MACOP-B-like regimen (VNCOP-B) for front-line treatment of elderly aggressive NHL. Models of Cox's proportional hazards regression analysis of prognostic value of pre-/post-treatment hemoglobin values in terms of 5-year overall survival included age, sex, initial tumor staging and response to treatment. Of the 168 patients screened, 16 were excluded due to missing data or lack of 5-year follow-up. In addition to achievement of complete/partial remission (adjusted relative risk [RR], 0.215; p = 0.0001) and advanced stage (II-IV vs. I – II; adjusted RR, 1.55; p = 0.0023), post-treatment hemoglobin values were an independent predictor of survival (adjusted RR per 1-g/dL increment, 0.76; p = 0.0041). In the present analysis, pretreatment hemoglobin values were associated with only marginal risk reduction (adjusted RR per 1-g/dL increment, 0.985; p = 0.049). Post-treatment hemoglobin values appear to provide a strong independent predictor of 5-year survival in elderly aggressive NHL, supporting the potential role of anemia correction in this group of patients.