Abstract
We present a study of the prevalence of genetic polymorphisms and expression of genes encoding the drug-resistance proteins glutathione S-transferases (GSTs) in order to gain insights into the pattern of failure evident in mantle cell lymphoma. We note a high preponderance of genetic alterations conferring resistance to standard chemotherapy in this illness. Concurrent with this investigation, we present a series of patients who were provided dose-dense and intense chemotherapy to circumvent these drug-resistance mechanisms. High responses were noted, though durable remissions were few, indicating non-traditional chemotherapy options are important to investigate in this illness.
MeSH terms
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Adult
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Aged
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Antimetabolites, Antineoplastic / administration & dosage
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Antineoplastic Agents, Alkylating / administration & dosage
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Antineoplastic Agents, Phytogenic / administration & dosage
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Antineoplastic Combined Chemotherapy Protocols / adverse effects
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Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
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Carmustine / administration & dosage
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Cyclophosphamide / administration & dosage
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Cytarabine / administration & dosage
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Disease-Free Survival
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Drug Resistance, Neoplasm / genetics*
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Etoposide / administration & dosage
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Female
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Gene Frequency
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Glutathione S-Transferase pi / genetics
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Glutathione Transferase / genetics*
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Granulocyte Colony-Stimulating Factor / administration & dosage
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Humans
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Lymphoma, Mantle-Cell / drug therapy*
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Lymphoma, Mantle-Cell / enzymology
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Lymphoma, Mantle-Cell / genetics
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Lymphoma, Mantle-Cell / mortality
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Male
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Middle Aged
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Mitoxantrone / administration & dosage
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Peripheral Blood Stem Cell Transplantation
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Polymorphism, Genetic*
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Survival Analysis
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Time Factors
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Treatment Outcome
Substances
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Antimetabolites, Antineoplastic
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Antineoplastic Agents, Alkylating
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Antineoplastic Agents, Phytogenic
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Cytarabine
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Granulocyte Colony-Stimulating Factor
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Etoposide
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Cyclophosphamide
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Mitoxantrone
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glutathione S-transferase T1
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GSTP1 protein, human
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Glutathione S-Transferase pi
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Glutathione Transferase
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glutathione S-transferase M1
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Carmustine