S9031-S9126-S9333-S9500-B Biomarker Expression in Patients With Acute Myeloid Leukemia

Study Overview
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Brief Summary
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RATIONALE: Studying samples of bone marrow from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. PURPOSE: This research study is looking at biomarker expression in bone marrow samples from patients with acute myeloid leukemia.

Detailed Description
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OBJECTIVES: Estimate the distributions of topoisomerase 2 (TOP2) expression and single nucleotide polymorphisms (SNPs) in patients with newly diagnosed acute myeloid leukemia (AML). Estimate the distributions of mutations in TOP2 phosphorylation sites (by SNP analysis) in these patients. Investigate whether expression of TOP2 or mutations in TOP2 phosphorylation sites vary with patient or disease characteristics in these patients. Test whether TOP2 expression correlates with complete remission rates, relapse-free survival, and overall survival of these patients. Conduct preliminary analyses to estimate the distributions of TOP2 expression and mutations in TOP2 phosphorylation sites (by SNP analysis) in patients with relapsed and/or refractory AML. Investigate whether expression of TOP2 and mutations in TOP2 phosphorylation sites vary with patient or disease characteristics in patients with relapsed and/or refractory AML. Test whether TOP2 expression and mutations in TOP2 phosphorylation sites differ between previously untreated and relapsed/refractory AML patients. OUTLINE: This is a multicenter study. Archived RNA specimens are analyzed for topoisomerase 2 transcriptional expression by quantitative real-time polymerase chain reaction (PCR) and for mutations within TOP2 phosphorylation sites by single nucleotide polymorphism analysis.

Official Title
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Topoisomerase 2 Expression and Acute Myeloid Leukemia (AML)

Conditions
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Leukemia

Intervention / Treatment
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* Genetic: DNA analysis
* Genetic: RNA analysis
* Genetic: mutation analysis
* Genetic: polymerase chain reaction
* Genetic: polymorphism analysis
* Other: laboratory biomarker analysis


Participation Criteria
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Eligibility Criteria
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DISEASE CHARACTERISTICS: Diagnosis of acute myeloid leukemia All subtypes allowed (except acute promyelocytic leukemia [M3]) Previously untreated OR relapsed/refractory disease Isolated RNA specimens from bone marrow aspirate samples available from patients who participated on SWOG-9031, SWOG-9333 (cytarabine/daunorubicin hydrochloride induction arm only), SWOG-9500, or SWOG-9126 PATIENT CHARACTERISTICS: Not specified PRIOR CONCURRENT THERAPY: See Disease Characteristics

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Genetic: DNA analysis|nan|
|Genetic: RNA analysis|nan|
|Genetic: mutation analysis|nan|
|Genetic: polymerase chain reaction|nan|
|Genetic: polymorphism analysis|nan|
|Other: laboratory biomarker analysis|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Distribution of topoisomerase 2 (TOP2) expression and single nucleotide polymorphisms |  | immediate | 
| Distributions of mutations in TOP2 phosphorylation sites |  | immediate | 
| Correlation of TOP2 expression with complete remission rates, relapse-free survival, and overall survival |  | immediate | 
| Variation of TOP2 expression and mutations in TOP2 phosphorylation sites among patients and disease characteristics |  | immediate | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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adult acute myeloid leukemia with 11q23 (MLL) abnormalities, adult acute myeloid leukemia with del(5q), adult acute myeloid leukemia with inv(16)(p13;q22), adult acute myeloid leukemia with t(16;16)(p13;q22), adult acute myeloid leukemia with t(8;21)(q22;q22), recurrent adult acute myeloid leukemia, untreated adult acute myeloid leukemia, adult erythroleukemia (M6a), adult pure erythroid leukemia (M6b), adult acute monoblastic leukemia (M5a), adult acute monocytic leukemia (M5b), adult acute myeloblastic leukemia with maturation (M2), adult acute myeloblastic leukemia without maturation (M1), adult acute myelomonocytic leukemia (M4), secondary acute myeloid leukemia, adult acute minimally differentiated myeloid leukemia (M0), adult acute megakaryoblastic leukemia (M7)