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Breast CancerPhase 3LEAFNCT01559194

Low Fat Versus Protein Sparing Diet for Weight Loss & Impact on Biomarkers Associated With Breast Cancer Risk

A Phase 3 study testing Low Fat Diet plus exercise and Low Carbohydrate diet + Exercise in people with Breast Cancer and Weight Loss, run by Ohio State University Comprehensive Cancer Center at 1 site in United States.

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

The primary specific aim of this study was to determine if overweight and obese premenopausal women can lose weight and if long term weight loss impacts biomarkers associated with breast cancer risk. Read more about this study

Who is it for?
Ages 30 years and older, women onlyHealthy volunteers can take part
Conditions the study is for
Breast Cancer, Weight Loss
What is being tested?
Low Fat Diet plus exercise and Low Carbohydrate diet + Exercise
Could I receive a placebo?
No, everyone receives an active treatment
How many people
82 participants
Where
1 siteUnited States
Study dates
May 2005to Dec 2007
Phase
Phase 3
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 30 years and older
  • Women only
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Aged 30 and older
  • Premenopausal (may be confirmed by FSH)
  • No previous diagnosis of cancer (except non-melanomatous skin cancer)
  • Body mass index between 25-34 kg/m2
  • Women must be expected to live in the Columbus area for the next 18 months.
  • All women must present a letter of medical clearance from their primary care physician.

Who cannot join

  • Pregnant women or women who plan to become pregnant during the study period will not be enrolled. Women who become pregnant during the intervention will be withdrawn from the study.
  • Women who are already participating in a formal weight loss program (such as Weight Watchers)will not be eligible.
  • Women with a medical history that precludes adherence to either of the two dietary patterns will also be excluded. This includes a history of renal insufficiency, gluten enteropathy, Crohn's disease or other medical conditions that significantly impact nutritional status or metabolism. Women with either type I or controlled type II diabetes will be eligible to participate in this trial.
  • All medical problems must be managed and controlled. Lipid profile, blood glucose, hemoglobin A1c, and blood pressure will be assessed at the screening visit. These results will be reviewed by the study physician. Women who have abnormal values that, at the discretion of the study physician, would benefit from medical management will be referred to a primary care physician prior to considering them for enrollment.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Ohio State University

    Columbus, Ohio, 43201

Other trials in United States

About this study

Official title: A Randomized Comparison of a Low Fat or Low Carbohydrate Dietary Pattern for Weight Loss and Impact on Biomarkers Associated With Breast Cancer Risk in Overweight and Obese Premenopausal Women: Lifestyle Eating and Fitness

The primary specific aim of this study was to determine if overweight and obese premenopausal women can lose weight and if long term weight loss impacts biomarkers associated with breast cancer risk.

Read the detailed description

We examined a low carbohydrate diet (40% carbohydrates, 30% protein, 30% fat) versus a low fat diet (60% carbohydrates, 20% protein, 20% fat) to determine the impact of these dietary patterns, combined with exercise, on weight loss, body shape and body composition.

Inclusion Criteria:

  • Aged 30 and older
  • Premenopausal (may be confirmed by FSH)
  • No previous diagnosis of cancer (except non-melanomatous skin cancer)
  • Body mass index between 25-34 kg/m2
  • Women must be expected to live in the Columbus area for the next 18 months
  • All women must present a letter of medical clearance from their primary care physician

Exclusion Criteria:

  • Pregnant women or women who plan to become pregnant during the study period will not be enrolled. Women who become pregnant during the intervention will be withdrawn from the study.
  • Women who are already participating in a formal weight loss program (such as Weight Watchers) will not be eligible.
  • Women with a medical history that precludes adherence to either of the two dietary patterns will also be excluded. This includes a history of renal insufficiency, gluten enteropathy, Crohn's disease or other medical conditions that significantly impact nutritional status or metabolism. Women with either type I or controlled type II diabetes will be eligible to participate in this trial.
  • All medical problems must be managed and controlled. Lipid profile, blood glucose, hemoglobin A1c, and blood pressure will be assessed at the screening visit. These results will be reviewed by the study physician. Women who have abnormal values that, at the discretion of the study physician, would benefit from medical management will be referred to a primary care physician prior to considering them for enrollment.
Being tested
Low Fat Diet plus exercise, Low Carbohydrate diet + Exercise
Medical subject headings
Breast Neoplasms, Weight Loss

What participants receive

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

  • Low Fat Diet plus exerciseBehavioural

    Low fat diet plus exercise - Subjects were educated about a low fat diet plus exercise and then followed for weight loss. They were also asked to monitor their physical activity by wearing a pedometer and recording the total steps walked every day.

  • Low Carbohydrate diet + ExerciseBehavioural

    Low carbohydrate diet plus exercise: Subjects were educated about a low carbohydrate diet and then followed for weight loss. They were also asked to monitor their physical activity by wearing a pedometer and recording the total steps walked every day.

Study groups in NCT01559194
Study groupRoleWhat they receive
Low Fat Diet + ExerciseActive comparatorSubjects were educated about a low fat diet plus exercise and then followed for weight loss. They were also asked to monitor their physical activity by wearing a pedometer and recording the total steps walked every day.
Receives: Behavioral: Low Fat Diet plus exercise
Low Carbohydrate Diet + ExerciseActive comparatorSubjects were educated about a low carbohydrate diet plus exercise and then followed for weight loss. They were also asked to monitor their physical activity by wearing a pedometer and recording the total steps walked every day.
Receives: Behavioral: Low Carbohydrate diet + Exercise

What is being measured

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

  1. Number of women who lose weight when following 1 of 2 different calorie-restricted diets

    Measured: 18 months

Secondary outcomes (1)
  1. Number of women that long-term weight loss impacted biomarkers (including Insulin-like growth factor (IGF)- 1 and IGFBP-3) associated with breast cancer risk

    Measured: 12 months

Timeline

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

  1. First posted21 Mar 2012 (estimated)
  2. Study startMay 2005
  3. Primary completionDec 2007
  4. Study completionDec 2007

Resources

More details

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

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Investigator, Outcomes assessor
Enrolment
82 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01559194
Sponsor's protocol ID
LEAF
Other IDs
OSU 0372
Acronym
LEAF
Status last verified
Apr 2014
First submitted
19 Mar 2012
Last updated
14 Apr 2014
Results posted
No
Data monitoring committee
Yes

Publications

  • David P, Buckworth J, Pennell ML, Katz ML, DeGraffinreid CR, Paskett ED. A walking intervention for postmenopausal women using mobile phones and Interactive Voice Response. J Telemed Telecare. 2012 Jan;18(1):20-5. doi: 10.1258/jtt.2011.110311. Epub 2011 Nov 3.

    PubMed 22052963
  • Llanos AA, Krok JL, Peng J, Pennell ML, Vitolins MZ, Degraffinreid CR, Paskett ED. Effects of a walking intervention using mobile technology and interactive voice response on serum adipokines among postmenopausal women at increased breast cancer risk. Horm Cancer. 2014 Apr;5(2):98-103. doi: 10.1007/s12672-013-0168-4. Epub 2014 Jan 17.

    PubMed 24435584
  • Foraker RE, Pennell M, Sprangers P, Vitolins MZ, DeGraffinreid C, Paskett ED. Effect of a low-fat or low-carbohydrate weight-loss diet on markers of cardiovascular risk among premenopausal women: a randomized trial. J Womens Health (Larchmt). 2014 Aug;23(8):675-80. doi: 10.1089/jwh.2013.4638. Epub 2014 Jul 16.

    PubMed 25029619
  • Llanos AA, Krok JL, Peng J, Pennell ML, Olivo-Marston S, Vitolins MZ, Degraffinreid CR, Paskett ED. Favorable effects of low-fat and low-carbohydrate dietary patterns on serum leptin, but not adiponectin, among overweight and obese premenopausal women: a randomized trial. Springerplus. 2014 Apr 4;3:175. doi: 10.1186/2193-1801-3-175. eCollection 2014.

    PubMed 24790820

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Low Fat Diet plus exercise and Low Carbohydrate diet + Exercise in people with Breast Cancer and Weight Loss, run by Ohio State University Comprehensive Cancer Center 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 6 inclusion and 4 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: finished, as of the sponsor's last update on 14 Apr 2014. 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.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

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?

Number of women who lose weight when following 1 of 2 different calorie-restricted diets (time frame: 18 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01559194, which also lists 4 linked publications.

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 14 Apr 2014.

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