Abstract
Over-expression of multidrug resistance (MDR) proteins PGP and BCRP has a negative prognostic impact in acute myeloid leukemia (AML) patients. Inclusion of fludarabine in induction chemotherapy increases remission rate in PGP over-expressing cases. We investigated the role of BCRP in 138 adult AML patients receiving induction therapy with fludarabine. None of the MDR-related proteins influenced complete remission attainment. Conversely, high levels of BCRP significantly affected disease-free survival, as higher relapse rates (48.5% vs 28.5%) and earlier relapse occurred in BCRP+ patients. Also overall survival was affected by BCRP positivity, and survival significantly worsened in case of concomitant PGP and BCRP over-expression.
Copyright 2010 Elsevier Ltd. All rights reserved.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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ATP Binding Cassette Transporter, Subfamily B, Member 1 / physiology
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ATP Binding Cassette Transporter, Subfamily G, Member 2
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ATP-Binding Cassette Transporters / biosynthesis
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ATP-Binding Cassette Transporters / genetics
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ATP-Binding Cassette Transporters / physiology*
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Acute Disease
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Adolescent
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Adult
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Aged
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Aged, 80 and over
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Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
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Disease-Free Survival
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Drug Resistance, Neoplasm / drug effects*
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Drug Resistance, Neoplasm / genetics
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Female
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Gene Expression Regulation, Leukemic*
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Humans
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Leukemia, Myeloid / drug therapy*
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Leukemia, Myeloid / metabolism
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Male
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Middle Aged
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Multidrug Resistance-Associated Proteins / physiology
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Neoplasm Proteins / biosynthesis
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Neoplasm Proteins / genetics
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Neoplasm Proteins / physiology*
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Remission Induction
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Vidarabine / administration & dosage
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Vidarabine / analogs & derivatives*
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Vidarabine / pharmacology
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Young Adult
Substances
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ABCG2 protein, human
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ATP Binding Cassette Transporter, Subfamily B, Member 1
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ATP Binding Cassette Transporter, Subfamily G, Member 2
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ATP-Binding Cassette Transporters
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Multidrug Resistance-Associated Proteins
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Neoplasm Proteins
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Vidarabine
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fludarabine
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multidrug resistance-associated protein 1