Phytoestrogens and Breast Cancer - Effects of Phytoestrogens on Markers of Disease Progression and Gene Expression (DAGMAR)

August 6, 2024 updated by: Cecilie Kyrø, Danish Cancer Society

DAGMAR: Phytoestrogens and Breast Cancer - Effects of Phytoestrogens on Markers of Disease Progression and Gene Expression

The aim is to investigate if soy isoflavones and lignans affect markers of disease progression and gene expression among breast cancer patients receiving neo-adjuvant treatment in a three arm, double-blinded, randomized placebo-controlled trial (RCT) comparing: soy isoflavone supplementation, lignan supplementation, and placebo.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Withdrawn

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Diagnosed with breast cancer at "Brystkirurgisk Afdeling" at Rigshospitalet and Herlev Hospitals (within the last 30 days).
  • Advised (and accepted) to receive neo-adjuvant treatment
  • Primary unilateral breast cancer
  • Treatment is expected to be curative
  • Is expected to be able to attend surgery

Exclusion Criteria:

  • Allergic to soy
  • Celiac disease
  • Inflammatory bowel disease
  • Not understanding Danish (patient material and questionnaires are in Danish)
  • Prior diagnosis of breast cancer
  • Use of dietary supplements containing lignans or isoflavones three months prior to diagnosis

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Lignan capsule
1 capsule/day from baseline to end-of-follow-up (approx. 4 months)
Dietary supplement: Lignans
Commercially available dietary supplement (capsule) containing 63 mg lignans (secoisolaricirecinol)
Experimental: Isoflavones capsule
1 capsule/day from baseline to end-of-follow-up (approx. 4 months)
Dietary supplement: Soy isoflavones
Commercially available dietary supplement (capsule) containing 60 mg isoflavones (genistein, daidzein and glycitein).
Placebo Comparator: Placebo capsule
1 capsule/day from baseline to end-of-follow-up (approx. 4 months)
Dietary supplement: Placebo
The placebo capsules are supplied and packaged by Region Hovedstadens Apotek (Denmark) and will contain lactose monohydrate, potato starch, gelatin, magnesium stearate and talc.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Ki-67
Time Frame: Change from baseline (diagnosis of breast cancer) to end-of-study (surgery): Approx. four months (neo-adjuvant setting)
Ki-67 can be measured using immunohistochemistry (IHC) and using the transcript from gene expression data (see secondary outcomes). As the latter is superior and less biased, the Ki-67 based on the transcript will be used as primary measure of Ki67.
Change from baseline (diagnosis of breast cancer) to end-of-study (surgery): Approx. four months (neo-adjuvant setting)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Apoptosis marker caspase-3
Time Frame: Change from baseline (diagnosis of breast cancer) to end-of-study (surgery): Approx. four months (neo-adjuvant setting)
Change from baseline (diagnosis of breast cancer) to end-of-study (surgery): Approx. four months (neo-adjuvant setting)
Proliferation Index
Time Frame: Change from baseline (diagnosis of breast cancer) to end-of-study (surgery): Approx. four months (neo-adjuvant setting)
Based on expression data from 79 genes encoding proliferative and cell cycle markers. Gene expression will be analyzed using a microarray (GeneChip® Human Genome U133 Plus 2.0 Array, Affymetrix, USA)
Change from baseline (diagnosis of breast cancer) to end-of-study (surgery): Approx. four months (neo-adjuvant setting)
Patient reported outcomes
Time Frame: Change for completion of first questionnaire (shortly after diagnosis) to second questionnaire (close to time of surgery). Approx. four months (neo-adjuvant setting)
Well-being
Change for completion of first questionnaire (shortly after diagnosis) to second questionnaire (close to time of surgery). Approx. four months (neo-adjuvant setting)

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Fecal microbiome:
Time Frame: Change measured in first fecal sample (shortly after diagnosis) to second fecal sample (close to time of surgery). Approx. four months (neo-adjuvant setting)
The microbial community composition will be characterized using the 16sRNA method (Illumina MiSeq Platform).
Change measured in first fecal sample (shortly after diagnosis) to second fecal sample (close to time of surgery). Approx. four months (neo-adjuvant setting)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Danish Cancer Society

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Rigshospitalet, Denmark

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2021

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 1, 2022

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 5, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 5, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 10, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 7, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 6, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • R174-A11507-17-S52

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Data will be shared upon approval from relevant authorities and in accordance with the law

IPD Sharing Access Criteria

Please request this information from PI Cecilie Kyrø, Ceciliek@cancer.dk

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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