Breast CancerNCT01666171
Studying Changes in Breast Density in Patients With Early-Stage Breast Cancer Treated With Metformin Hydrochloride or Placebo on CAN-NCIC-MA.32
An observational study of Breast Cancer, run by Cancer and Leukemia Group B.
Trial summary
RATIONALE: Learning about the effect of metformin hydrochloride in breast density of women with early-stage breast cancer may help plan treatment. PURPOSE: This trial studies changes in breast density in patients with early-stage breast cancer treated with metformin hydrochloride or placebo on CAN-NCIC-MA.32. Read more about this study
- Who is it for?
- Ages 18 to 74 years, women only
- Conditions the study is for
- Breast Cancer
- What is being tested?
- metformin hydrochloride, clinical observation and diagnostic laboratory biomarker analysis
- Type of treatment
- Surgery or procedure
- How many people
- 458 participants
- Where
- No sites listed yet
- Study dates
- Aug 2012to Apr 2013
- 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 74 years
- Women only
- No healthy volunteers
- Adult, Older adult
DISEASE CHARACTERISTICS:
- Patients must either be concurrently enrolling or previously enrolled to Canada (CAN) National Cancer Institute of Canada (NCIC) study MA.32 (CAN-NCIC-MA.32) (MA.32); eligible patients may be either pre- or post-menopausal
- Patients must have hormone receptor-negative breast cancer
- Patients must have breast density ≥ 25% (correlating with the Breast Imaging-Reporting and Data [BIRAD]-2 category of "scattered fibroglandular densities" or greater)
- Baseline digital mammograms taken within 12 months prior to registration to MA.32, with at least a craniocaudal (CC) view used for enrollment to MA.32 must be available for submission; if the patient has previously enrolled to MA.32 and one year has elapsed from baseline mammograms, one-year mammograms must also be available for submission
- Contralateral unaffected breast in place (with no prior cancer or radiation, no implants, and no plan for breast surgery on contralateral breast over the course of the study); women with a prior biopsy on the unaffected breast are eligible
PATIENT CHARACTERISTICS:
- Not specified
PRIOR CONCURRENT THERAPY:
- See Disease Characteristics
- Women receiving endocrine therapy (e.g., tamoxifen, aromatase inhibitors) are not eligible
About this study
Official title: Change in Mammographic Density With Metformin Use: A Companion Study to NCIC Study MA.32
RATIONALE: Learning about the effect of metformin hydrochloride in breast density of women with early-stage breast cancer may help plan treatment.
PURPOSE: This trial studies changes in breast density in patients with early-stage breast cancer treated with metformin hydrochloride or placebo on CAN-NCIC-MA.32.
Read the detailed description
OBJECTIVES:
Primary
- To evaluate the change in percent mammographic density in contralateral (unaffected breast) from prior to the initiation of metformin hydrochloride (metformin) or placebo treatment through one year of therapy in patients with hormone receptor-negative breast cancer (i.e., not on endocrine therapy).
Secondary
- To evaluate the change in percent breast density in contralateral (unaffected breast) from prior to the initiation of metformin or placebo treatment through two years of therapy in patients with hormone receptor-negative breast cancer (i.e., not on endocrine therapy).
- To evaluate whether baseline mammographic density correlates with baseline of fasting plasma insulin, glucose levels, and Homeostasis Model Assessment (HOMA) (collected on the treatment protocol CAN-NCIC-MA.32) (MA.32).
- To evaluate whether changes in dense area in response to metformin therapy from pre-treatment through two years of therapy correlate with changes in fasting plasma insulin, glucose levels, and HOMA (collected on the treatment protocol MA.32) over the same time period.
- To explore whether change in mammographic density for women on metformin is associated with risk of second primary breast cancer.
OUTLINE: Patients' mammograms taken at baseline and at approximately 1 and 2 years of metformin or placebo treatment are retrieved and analyzed for breast-density change. Pre-menopausal patients' menstrual cycle information is also collected at baseline and every 6 months for 2 years.
- Conditions
- Breast Cancer
- Being tested
- metformin hydrochloride, clinical observation, diagnostic laboratory biomarker analysis, imaging biomarker analysis, medical chart review
- Keywords
- estrogen receptor-negative breast cancer, progesterone receptor-negative breast cancer, stage IB breast cancer, stage II breast cancer, stage IIIA breast cancer, stage IIIC 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.
metformin hydrochlorideDrug
clinical observationOther
diagnostic laboratory biomarker analysisOther
imaging biomarker analysisOther
medical chart reviewOther
digital mammographyProcedure or surgery
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in percent mammographic breast density in contralateral (unaffected) breast from baseline to 1 year using two-sample t-test or Wilcoxon rank-sum test
Secondary outcomes (4)
Change in percent mammographic breast density in contralateral (unaffected) breast from baseline to 2 years using two-sample t-test
Correlation between baseline mammographic density and baseline plasma fasting insulin, glucose levels, and HOMA using a scatter plot, correlation-coefficient estimation, and linear-regression method
Correlation of changes in dense area in response to metformin therapy from pre-treatment to on treatment (at year 1 and year 2) with plasma fasting insulin, glucose levels, and HOMA using simple linear-regression method
Correlation between mammographic density and the incidence of second primary breast cancer using correlation coefficient and scatter plot
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Aug 2012 (estimated)
- Study startAug 2012
- Primary completionApr 2013 (estimated)
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.
- 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
- Enrolment
- 458 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Cancer and Leukemia Group B
- Sponsor type
- Research network
- Collaborators
- National Cancer Institute (NCI)
- Investigators
- Marie E. Wood, MD, Principal investigator, University of Vermont
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01666171
- Sponsor's protocol ID
- CALGB-A211201
- Other IDs
- CDR0000738328
- Status last verified
- Jan 2013
- First submitted
- 14 Aug 2012
- Last updated
- 10 Jul 2013
- Results posted
- No
Study at a glance
From the registry record, last updated by the sponsor on 10 Jul 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Change in Mammographic Density With Metformin Use: A Companion Study to NCIC Study MA.32
- ClinicalTrials.gov ID
- NCT01666171
- Acronym / sponsor ID
- CALGB-A211201
- Conditions
- Breast Cancer
- Keywords
- estrogen receptor-negative breast cancer, progesterone receptor-negative breast cancer, stage IB breast cancer, stage II breast cancer, stage IIIA breast cancer, stage IIIC breast cancer
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 458 participants (estimated)
- Lead sponsor
- Cancer and Leukemia Group BResearch network
- Collaborators
- National Cancer Institute (NCI)
- Study start
- Aug 2012
- Primary completion
- Apr 2013 (estimated)
- First posted
- 16 Aug 2012 (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: Learning about the effect of metformin hydrochloride in breast density of women with early-stage breast cancer may help plan treatment.
PURPOSE: This trial studies changes in breast density in patients with early-stage breast cancer treated with metformin hydrochloride or placebo on CAN-NCIC-MA.32.
Detailed description
OBJECTIVES:
Primary
- To evaluate the change in percent mammographic density in contralateral (unaffected breast) from prior to the initiation of metformin hydrochloride (metformin) or placebo treatment through one year of therapy in patients with hormone receptor-negative breast cancer (i.e., not on endocrine therapy).
Secondary
- To evaluate the change in percent breast density in contralateral (unaffected breast) from prior to the initiation of metformin or placebo treatment through two years of therapy in patients with hormone receptor-negative breast cancer (i.e., not on endocrine therapy).
- To evaluate whether baseline mammographic density correlates with baseline of fasting plasma insulin, glucose levels, and Homeostasis Model Assessment (HOMA) (collected on the treatment protocol CAN-NCIC-MA.32) (MA.32).
- To evaluate whether changes in dense area in response to metformin therapy from pre-treatment through two years of therapy correlate with changes in fasting plasma insulin, glucose levels, and HOMA (collected on the treatment protocol MA.32) over the same time period.
- To explore whether change in mammographic density for women on metformin is associated with risk of second primary breast cancer.
OUTLINE: Patients' mammograms taken at baseline and at approximately 1 and 2 years of metformin or placebo treatment are retrieved and analyzed for breast-density change. Pre-menopausal patients' menstrual cycle information is also collected at baseline and every 6 months for 2 years.
Study design
Who may qualify
- Ages
- 18 to 74 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
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 |
|---|---|---|
| metformin hydrochloride | Drug | – |
| clinical observation | Other | – |
| diagnostic laboratory biomarker analysis | Other | – |
| imaging biomarker analysis | Other | – |
| medical chart review | Other | – |
| digital mammography | Procedure or surgery | – |
Primary outcome
Change in percent mammographic breast density in contralateral (unaffected) breast from baseline to 1 year using two-sample t-test or Wilcoxon rank-sum test
4 secondary outcomes
Change in percent mammographic breast density in contralateral (unaffected) breast from baseline to 2 years using two-sample t-test
Correlation between baseline mammographic density and baseline plasma fasting insulin, glucose levels, and HOMA using a scatter plot, correlation-coefficient estimation, and linear-regression method
Correlation of changes in dense area in response to metformin therapy from pre-treatment to on treatment (at year 1 and year 2) with plasma fasting insulin, glucose levels, and HOMA using simple linear-regression method
Correlation between mammographic density and the incidence of second primary breast cancer using correlation coefficient and scatter plot
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Jul 2013.
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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.
Marie E. Wood, MD principal investigator
University of Vermont
Questions about this trial
What is this clinical trial studying?
An observational study of Breast Cancer, run by Cancer and Leukemia Group B.
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: status not confirmed, as of the sponsor's last update on 10 Jul 2013. 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?
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?
Change in percent mammographic breast density in contralateral (unaffected) breast from baseline to 1 year using two-sample t-test or Wilcoxon rank-sum test. 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 10 Jul 2013.