Breast CancerNCT00899197
Tamoxifen Resistance in Women With Stage I, Stage II, Stage IIIA, or Stage IIIB Breast Cancer
An observational study of Breast Cancer, run by Wake Forest University Health Sciences at 1 site in United States.
Trial summary
RATIONALE: Studying samples of blood from patients with breast cancer in the laboratory may help doctors identify and learn more about biomarkers related to tamoxifen resistance. PURPOSE: This laboratory study is looking at tamoxifen resistance in women with stage I, stage II, stage IIIA, or stage IIIB breast cancer. Read more about this study
- Who is it for?
- Ages 18 to 120 years, women only
- Conditions the study is for
- Breast Cancer
- What is being tested?
- tamoxifen citrate, gene expression analysis and protein expression analysis
- How many people
- 2 participants
- Where
- 1 siteUnited States
- Study dates
- May 2007to Jun 2012
- 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
- Women only
- No healthy volunteers
- Adult, Older adult
Study population: Female >/= 18 years old with confirmed invasive breast cancer
Who may be able to join
- Histologically confirmed invasive breast cancer
- Initial pathologic stage I-IIIB disease
- No stage IV disease
- Meets the following criteria for breast cancer therapy:
- Received prior primary local therapy for breast cancer
- Scheduled to begin tamoxifen citrate as adjuvant therapy for breast cancer within 3 weeks
Show all 11Show fewer
- Hormone receptor status:
- Estrogen-receptor positive tumor
- Female
- Pre- or post-menopausal
- Must be able to donate 20 mL of blood
Who cannot join
- Severe anemia, defined as hemoglobin < 11 g/dL
- Psychiatric history that would preclude obtaining informed consent
Trial locations and contacts
1 site in 1 country.
United States1 site
Wake Forest University Comprehensive Cancer Center
Winston-Salem, North Carolina, 27157-1096
About this study
Official title: Tamoxifen Resistance in Breast Cancer
RATIONALE: Studying samples of blood from patients with breast cancer in the laboratory may help doctors identify and learn more about biomarkers related to tamoxifen resistance.
PURPOSE: This laboratory study is looking at tamoxifen resistance in women with stage I, stage II, stage IIIA, or stage IIIB breast cancer.
Read the detailed description
OBJECTIVES:
- Identify women who are resistant to tamoxifen citrate and other drugs for the treatment of breast cancer by testing their plasma for the presence of proteins (e.g., macrophage migration inhibition factor) encoded by resistance-inducing genes (RIGs).
- Provide retrospective data on the predictive value of RIGs to serve as the basis for a prospective clinical trial of these genes as predictors of drug resistance.
OUTLINE: This is a multicenter study. Patients are stratified according to response during tamoxifen citrate (TAM) therapy (resistant group [i.e., those who develop recurrent breast cancer while being treated with TAM] vs conditionally sensitive group [i.e., those who have disease-free survival for over 3 years after initial diagnosis while being treated with TAM]).
Patients undergo blood collection at baseline, within 3 weeks of initiation of TAM therapy, and then every 6 months for 3 years or until relapse, whichever comes first. Samples are analyzed by enzyme-linked immunosorbent assay for expression of protein biomarkers (i.e., kallikrein gene 10, macrophage migration inhibition factor, prolyl carboxypeptidase, queuine tRNA-ribosyltransferase, and kinesin) encoded by resistance-inducing genes. An additional blood sample is obtained from patients at the time of relapse, if available.
Patients also undergo assessment of medical history, personal habits, and characteristics of breast cancer (e.g., tumor histology, stage, and grade) at baseline.
- Conditions
- Breast Cancer
- Being tested
- tamoxifen citrate, gene expression analysis, protein expression analysis, immunoenzyme technique, laboratory biomarker analysis
- Keywords
- stage I breast cancer, stage II breast cancer, stage IIIA breast cancer, stage IIIB breast cancer
- Medical subject headings
- Breast Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
tamoxifen citrateDrug
gene expression analysisGenetic
protein expression analysisGenetic
immunoenzyme techniqueOther
laboratory biomarker analysisOther
What is being measured
The primary outcome is the main question the study is designed to answer.
Evaluation of the mechanisms of tamoxifen citrate (TAM) resistance in breast cancer
Change in expression levels of protein biomarkers of TAM resistance as measured periodically for 3 years or until relapse, whichever comes first
Retrospective data on the predictive value of resistance-inducing genes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 May 2009 (estimated)
- Study startMay 2007
- Primary completionMar 2009
- Study completionJun 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Breast CancerStudies of the same condition, open and under way.
- More trials run by Wake Forest University Health SciencesThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Cohort
- Time perspective
- Prospective
- Enrolment
- 2 participants (actual)
Sponsor and investigators
- Lead sponsor
- Wake Forest University Health Sciences
- Sponsor type
- University, hospital or other
- Collaborators
- National Cancer Institute (NCI)
- Responsible party
- Sponsor
- Investigators
- Steven A. Akman, MD, Study chair, Wake Forest University Health Sciences
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00899197
- Sponsor's protocol ID
- CDR0000547204
- Other IDs
- P30CA012197, CCCWFU-74B07, CCCWFU-IRB00002657
- Status last verified
- Sep 2015
- First submitted
- 9 May 2009
- Last updated
- 1 Aug 2017
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 1 Aug 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Tamoxifen Resistance in Breast Cancer
- ClinicalTrials.gov ID
- NCT00899197
- Acronym / sponsor ID
- CDR0000547204
- Conditions
- Breast Cancer
- Keywords
- stage I breast cancer, stage II breast cancer, stage IIIA breast cancer, stage IIIB breast cancer
- Study type
- Observational
- Recruitment status
- Terminated
- Enrolment
- 2 participants (actual)
- Lead sponsor
- Wake Forest University Health SciencesUniversity, hospital or other
- Collaborators
- National Cancer Institute (NCI)
- Study start
- May 2007
- Primary completion
- Mar 2009 (actual)
- Study completion
- Jun 2012 (actual)
- First posted
- 12 May 2009 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
RATIONALE: Studying samples of blood from patients with breast cancer in the laboratory may help doctors identify and learn more about biomarkers related to tamoxifen resistance.
PURPOSE: This laboratory study is looking at tamoxifen resistance in women with stage I, stage II, stage IIIA, or stage IIIB breast cancer.
Detailed description
OBJECTIVES:
- Identify women who are resistant to tamoxifen citrate and other drugs for the treatment of breast cancer by testing their plasma for the presence of proteins (e.g., macrophage migration inhibition factor) encoded by resistance-inducing genes (RIGs).
- Provide retrospective data on the predictive value of RIGs to serve as the basis for a prospective clinical trial of these genes as predictors of drug resistance.
OUTLINE: This is a multicenter study. Patients are stratified according to response during tamoxifen citrate (TAM) therapy (resistant group [i.e., those who develop recurrent breast cancer while being treated with TAM] vs conditionally sensitive group [i.e., those who have disease-free survival for over 3 years after initial diagnosis while being treated with TAM]).
Patients undergo blood collection at baseline, within 3 weeks of initiation of TAM therapy, and then every 6 months for 3 years or until relapse, whichever comes first. Samples are analyzed by enzyme-linked immunosorbent assay for expression of protein biomarkers (i.e., kallikrein gene 10, macrophage migration inhibition factor, prolyl carboxypeptidase, queuine tRNA-ribosyltransferase, and kinesin) encoded by resistance-inducing genes. An additional blood sample is obtained from patients at the time of relapse, if available.
Patients also undergo assessment of medical history, personal habits, and characteristics of breast cancer (e.g., tumor histology, stage, and grade) at baseline.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 120 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Female >/= 18 years old with confirmed invasive breast cancer
Key inclusion criteria (11 listed)
- Histologically confirmed invasive breast cancer
- Meets the following criteria for breast cancer therapy:
- Hormone receptor status:
- Female
- Pre- or post-menopausal
Key exclusion criteria (2 listed)
- Severe anemia, defined as hemoglobin < 11 g/dL
- Psychiatric history that would preclude obtaining informed consent
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| tamoxifen citrate | Drug | – |
| gene expression analysis | Genetic | – |
| protein expression analysis | Genetic | – |
| immunoenzyme technique | Other | – |
| laboratory biomarker analysis | Other | – |
Primary outcome
Evaluation of the mechanisms of tamoxifen citrate (TAM) resistance in breast cancer
Change in expression levels of protein biomarkers of TAM resistance as measured periodically for 3 years or until relapse, whichever comes first
Retrospective data on the predictive value of resistance-inducing genes
Results and safety
The study was stopped early. Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Aug 2017.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Steven A. Akman, MD study chair
Wake Forest University Health Sciences
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Breast Cancer, run by Wake Forest University Health Sciences at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 11 inclusion and 2 exclusion criteria. 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: stopped early, as of the sponsor's last update on 1 Aug 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
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 was stopped early. Results are not available in the source record.
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?
Evaluation of the mechanisms of tamoxifen citrate (TAM) resistance in breast cancer. The study lists 3 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 1 Aug 2017.