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Comparison of clinical features and survival between young and old chronic lymphocytic leukemia patients: a single center study from Turkey

Abstract We aimed to investigate whether the clinical characteristics, the rate of treatment demand and survival differ between chronic lymphocytic leukemia (CLL) patients <65 years (y) and ≥65 y. Sixty three (46%) patients were <65 y and 74 (54%) were ≥65 y. 28.6% (18/63) of the patients <65 required treatment, while this rate was 44.6% (33/74) for patients ≥65 y (p > .05). The probability of overall survival (OS) was 90 vs. 51% in patients <65 y and ≥65 y (p = .016). In univariate analysis, the age affected OS (p = .04, HR: 0.212, CI: 0.047–0.946). In subgroup analysis, in treated patients, the probability of OS was 73 vs. 49% in patients <65 y and ≥65 y (p = .389). The survival difference between the young and old patients is too high to be ignored and age seems to affect the outcome of CLL patients.