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  • Title: A network meta-analysis of progression free survival and overall survival in first-line treatment of chronic lymphocytic leukemia.
    Author: Ladyzynski P, Molik M, Foltynski P.
    Journal: Cancer Treat Rev; 2015 Feb; 41(2):77-93. PubMed ID: 25512118.
    Abstract:
    BACKGROUND: A limited evidence exists regarding comparisons of clinical effectiveness of available therapies for first-line treatment of chronic lymphocytic leukemia (CLL). METHODS: We compared available therapies for treatment-naïve, symptomatic CLL regarding progression free survival (PFS) and overall survival (OS) in all the identified random control trials and in subgroups composed of younger/fit and older/unfit patients, using a Bayesian network meta-analysis. RESULTS: In younger/fit patients we obtained median of projected mean PFS of: 19, 26, 31, 43, 51 and 75months for chlorambucil, fludarabine, alemtuzumab, fludarabine with cyclophosphamide (FC), bendamustine and fludarabine with cyclophosphamide and rituximab (FCR), respectively. We noted median OS of: 59, 66, 66, 70months for FC, chlorambucil, FCR and fludarabine, respectively. In older/unfit patients we noted PFS of: 16, 17, 24, 30, 60months for chlorambucil, fludarabine and chlorambucil with ofatumumab (OClb) or rituximab (RClb) or obinutuzumab (GClb), respectively. We obtained median OS of: 44, 58, 59 and 90months for fludarabine, RClb, chlorambucil and GClb, respectively. CONCLUSIONS: Our results suggest that: (1) FCR has higher potential of preventing CLL progression in younger/fit patients over four therapy options, which were subject of previous meta-analysis but also over bendamustine; (2) in these patients FCR does not entail prolonging of OS in comparison with chlorambucil and it is outperformed by fludarabine; (3) in older/unfit patients GClb demonstrates longer projected PFS than all assessed comparators; (4) in this group GClb has also the highest potential of increasing OS.
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