Biomarkers in Bone Marrow and Blood Samples From Patients With Prostate Cancer Treated With Ketoconazole
Androgen Receptor (AR) Activity in Castration-Resistant Prostate Cancer (CRPC) and Response to Ketoconazole
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
PRIMARY OBJECTIVES:
I. To determine whether pre-treatment androgen receptor (AR) activity correlates with progression-free survival (PFS) of men with castration-resistant prostate cancer (CRPC) treated with ketoconazole.
SECONDARY OBJECTIVES:
I. To determine if expression of androgen transport/synthesis/metabolism genes (including cytochrome P450, family 17, subfamily A, polypeptide 1 [CYP17A1], aldo-keto reductase family 1 [AKR1]C3, hydroxy-delta-5-steroid dehydrogenase, 3 beta- and steroid delta-isomerase 2 [HSD3B2], hydroxysteroid [17-beta] dehydrogenase [HSD17B]3, HSD17B6, AKR1C2, AKR1C1, UGTB15, UGTB17, steroid-5-alpha-reductase, alpha polypeptide 1 [3-oxo-5 alpha-steroid delta 4-dehydrogenase alpha] [SRD5A]1, SRD5A2, SRD5A3, and solute carrier organic anion transporter family, member 2B1 [SLCO2B1]) correlate with detected AR activity, time to progression (progression free survival [PFS]) following treatment with ketoconazole, and overall survival.
II. To determine if semi-quantitative immunohistochemical analysis of AR and AKR1C3 protein levels correlate with PFS following treatment with ketoconazole.
III. To determine if specific AR splice variations correlate with PFS in response to ketoconazole.
IV. To determine if detected activity of signaling pathways that interact with AR pathway activity (e.g., phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha [PI3K] and downstream effectors, SRC proto-oncogene, non-receptor tyrosine kinase [SRC], others) correlate with detected AR activity, PFS, and OS.
V. To determine if AR gene amplification correlates with detected AR activity and PFS on ketoconazole.
VI. To determine if levels of testosterone and dihydrotestosterone (DHT) from tumor tissue correlate with AR activity and PFS on ketoconazole.
VII. To determine the presence of specific prostate cancer-associated gene translocations in each sample of CRPC.
VIII. To provide an unbiased data set of gene expression in CRPC that will markedly expand the currently available public domain data.
IX. To provide a library of amplified ribonucleic acid (RNA) and complementary (c)DNA for further analysis by other investigators.
OUTLINE:
Previously collected bone marrow, tissue, and blood samples are analyzed for AR activity, AR splice variations, expression of androgen transport/synthesis/metabolism genes, AKR1C3 protein levels, and testosterone and dihydrotestosterone levels via reverse transcription (RT)-polymerase chain reaction (PCR), single nucleotide polymorphisms (SNP) microarrays, immunohistochemistry (IHC), gene expression analysis, and mass spectrometry methods.
Study Type
Contacts and Locations
Study Locations
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Massachusetts
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Boston, Massachusetts, United States, 02115
- Alliance for Clinical Trials in Oncology
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusioin Criteria:
- Patients must have been registered to CALGB 9583 and CALGB 9663
- Adequate tissue specimen available for analysis
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
|---|---|
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Ancillary-Correlative (AR activity in CRPC)
Previously collected bone marrow tissue and blood samples are analyzed for AR activity, AR splice variations, expression of androgen transport/synthesis/metabolism genes, AKR1C3 protein levels, and testosterone and dihydrotestosterone levels via RT-PCR, SNP microarrays, IHC, gene expression analysis, and mass spectrometry methods.
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Correlative studies
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
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Progression-free survival (PFS)
Time Frame: Baseline
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Baseline
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
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Overall survival
Time Frame: Baseline
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Baseline
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Equal to or greater than 30% decline in PSA
Time Frame: Baseline
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Baseline
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Collaborators and Investigators
Collaborators
Investigators
- Study Chair: Mary-Ellen Taplin, MD, Dana-Farber Cancer Institute
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CALGB-151004
- CDR0000688286 (Registry Identifier: NCI Physician Data Query)
- NCI-2011-02835 (Registry Identifier: NCI Clinical Trial Reporting Program)
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