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AzTrials

Prostate CancerNCT00897351

Study of Tissue and Blood Samples From Patients With Recurrent Prostate Cancer Who Received Lapatinib on Clinical Trial ECOG-E5803

An observational study of Prostate Cancer, run by ECOG-ACRIN Cancer Research Group.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

RATIONALE: Studying samples of tumor tissue and blood in the laboratory from patients with cancer may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. It may also help doctors predict how patients will respond to treatment. Read more about this study

Who is it for?
Ages 18 to 120 years, men only
Conditions the study is for
Prostate Cancer
What is being tested?
mutation analysis, polymorphism analysis and protein expression analysis
How many people
37 participants
Where
No sites listed yet
Study dates
10 Jul 2008to 10 Feb 2009
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 120 years
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Study population: Samples submitted for research from patients enrolled on E5803

DISEASE CHARACTERISTICS:

  • Diagnosis of prostate cancer
  • Recurrent disease
  • Received lapatinib ditosylate on clinical trial ECOG-E5803

PATIENT CHARACTERISTICS:

  • Not specified

PRIOR CONCURRENT THERAPY:

  • See Disease Characteristics

About this study

Official title: Evaluation of Polymorphisms, Mutations, and Protein Expression by Automated Quantitative Immunohistochemistry (AQUA) in the LapatinibTargets and Metabolic Pathway in Samples From E5803

RATIONALE: Studying samples of tumor tissue and blood in the laboratory from patients with cancer may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. It may also help doctors predict how patients will respond to treatment.

PURPOSE: This research study is looking at tissue and blood samples from patients with recurrent prostate cancer who received lapatinib on clinical trial ECOG-E5803.

Read the detailed description

OBJECTIVES:

  • To determine the association between polymorphisms in drug metabolizing enzymes and lapatinib ditosylate-associated toxicity in patients with hormone-sensitive recurrent prostate cancer receiving lapatinib ditosylate on clinical trial ECOG-E5803.
  • To determine the association between mutations in EGFR, HER-2 and Kras; protein expression of HER2, EGFR, MAPK and AKT; polymorphism controlling androgen synthesis; and progression-free survival.

OUTLINE: Tissue and blood samples collected from patients enrolled on clinical trial ECOG-E5803 are analyzed for correlative studies. Samples are assessed for HER2, EGFR, MAPK, and Akt; EGFR mutations and polymorphisms in CYP3A4; Ras mutations; recently identified mutations in HER2-neu and Kras; and additional polymorphisms in the lapatinib ditosylate metabolic pathway by automated quantitative IHC. Predictors of efficacy and toxicity are analyzed, including markers in the EGFR pathway as predictors of progression-free survival.

Conditions
Prostate Cancer
Being tested
mutation analysis, polymorphism analysis, protein expression analysis, immunohistochemistry staining method, laboratory biomarker analysis
Keywords
recurrent prostate cancer
Medical subject headings
Prostatic Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Polymorphisms associated with toxicity

    Measured: 1 month

  2. Association between mutations in EGFR, HER-2 and Kras; protein expression of HER2, EGFR, MAPK and AKT; polymorphism controlling androgen synthesis; and progression-free survival

    Measured: 1 month

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 May 2009 (estimated)
  2. Study start10 Jul 2008
  3. Primary completion10 Feb 2009
  4. Study completion10 Feb 2009

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Other
Time perspective
Retrospective
Enrolment
37 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00897351
Sponsor's protocol ID
CDR0000600985
Other IDs
ECOG-E5803T1
Status last verified
May 2017
First submitted
9 May 2009
Last updated
17 May 2017
Results posted
No

Questions about this trial

What is this clinical trial studying?

An observational study of Prostate Cancer, run by ECOG-ACRIN Cancer Research Group.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 May 2017. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Polymorphisms associated with toxicity (time frame: 1 month). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 May 2017.

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