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PURPOSE: Diagnostic study of genetic markers in adult patients who have acute lymphoblastic leukemia or acute promyelocytic leukemia.
- Perform quantitative polymerase chain reaction (PCR) using known leukemia specific markers in diagnostic bone marrow specimens and correlate pre-treatment copy number with other biologic and molecular features, clinical response, and treatment outcomes of patients with previously untreated acute lymphoblastic leukemia (ALL) or acute promyelocytic leukemia (APL).
- Evaluate the expression of novel genes or microRNAs implicated in disease pathogenesis and treatment response in pretreatment blood and bone marrow specimens of these patients and correlate these findings with other biological features and treatment outcome.
- Evaluate the clinical significance of sequential quantitative MRD measurements using real-time quantitative PCR and/or flow cytometry during and following treatment and correlate these findings with efficacy of novel treatment approaches and other biological and clinical prognostic features.
- Compare the measurement of MRD in blood with bone marrow specimens in sequential remission specimens.
OUTLINE: Blood and bone marrow samples are collected from patients periodically.
Samples are examined for the p190 and p210 BCR-ABL and WT-1 transcripts using reverse transcriptase-polymerase chain reaction (RT-PCR) analysis of the DNA and for marginal residual disease (MRD) via flow cytometric analysis.
Patients do not receive the results of the genetic testing and the results do not influence the type or duration of treatment.
PROJECTED ACCRUAL: A total of 450 patients will be accrued for this study over 5 years.
Primary Purpose: Diagnostic
reverse transcriptase-polymerase chain reaction, flow cytometry
Naval Medical Center - San Diego
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:58:28-0400
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A variation of the PCR technique in which cDNA is made from RNA via reverse transcription. The resultant cDNA is then amplified using standard PCR protocols.
DNA sequences that form the coding region for retroviral enzymes including reverse transcriptase, protease, and endonuclease/integrase. "pol" is short for polymerase, the enzyme class of reverse transcriptase.
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Methods for using more than one primer set in a polymerase chain reaction to amplify more than one segment of the target DNA sequence in a single reaction.
Methods used for detecting the amplified DNA products from the polymerase chain reaction as they accumulate instead of at the end of the reaction.
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