Reach for Health Study: Obesity-related Mechanisms and Mortality in Breast Cancer Survivors

NCT ID: NCT01302379

Last Updated: 2020-06-05

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

333 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-08-31

Study Completion Date

2016-12-31

Brief Summary

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This objective of this randomized controlled trial is to conduct a 2x2 test of a lifestyle intervention and metformin (a drug used to treat diabetes) to investigate how these treatments, alone or in combination, affect biomarkers associated with breast cancer survival. The Reach for Health Study will enroll 340 overweight/obese, postmenopausal breast cancer survivors. After completing the screening process and baseline measures, participants will be randomized in equal numbers to: (1) placebo, (2) metformin, (3) lifestyle intervention and placebo, or (4) lifestyle intervention and metformin. The intervention was powered on the main effects and the planned analyses are to compare: Metformin to Placebo and a separate comparison of Lifestyle intervention to control. The interventions will last for 6 months. Concentrations of circulating biomarkers will be assessed at baseline and 6 months.

Detailed Description

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Conditions

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Breast Neoplasms

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Main effects of the factorial design were the planned primary analysis and what the study was powered on.
Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Metformin + lifestyle intervention

Group Type ACTIVE_COMPARATOR

Metformin

Intervention Type DRUG

Week 1: 500 mg at dinner time Weeks 2-4: 1000 mg at dinner time Weeks 5+: 500 mg in morning; 1000 mg at dinner time

Lifestyle intervention

Intervention Type BEHAVIORAL

Telephone-based lifestyle intervention (dietary change and physical activity) for weight loss.

Placebo + lifestyle intervention

Group Type ACTIVE_COMPARATOR

Placebo

Intervention Type DRUG

Week 1: 1 pill at dinner time Weeks 2-4: 2 pills at dinner time Weeks 5+: 1 pill in morning; 2 pills at dinner time

Lifestyle intervention

Intervention Type BEHAVIORAL

Telephone-based lifestyle intervention (dietary change and physical activity) for weight loss.

Metformin + standard dietary guidelines

Group Type ACTIVE_COMPARATOR

Metformin

Intervention Type DRUG

Week 1: 500 mg at dinner time Weeks 2-4: 1000 mg at dinner time Weeks 5+: 500 mg in morning; 1000 mg at dinner time

Standard printed dietary guidelines

Intervention Type BEHAVIORAL

Set of standard health education materials provided to participants at single time point (immediately after randomization)

Placebo + standard dietary guidelines

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Week 1: 1 pill at dinner time Weeks 2-4: 2 pills at dinner time Weeks 5+: 1 pill in morning; 2 pills at dinner time

Standard printed dietary guidelines

Intervention Type BEHAVIORAL

Set of standard health education materials provided to participants at single time point (immediately after randomization)

Interventions

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Metformin

Week 1: 500 mg at dinner time Weeks 2-4: 1000 mg at dinner time Weeks 5+: 500 mg in morning; 1000 mg at dinner time

Intervention Type DRUG

Placebo

Week 1: 1 pill at dinner time Weeks 2-4: 2 pills at dinner time Weeks 5+: 1 pill in morning; 2 pills at dinner time

Intervention Type DRUG

Lifestyle intervention

Telephone-based lifestyle intervention (dietary change and physical activity) for weight loss.

Intervention Type BEHAVIORAL

Standard printed dietary guidelines

Set of standard health education materials provided to participants at single time point (immediately after randomization)

Intervention Type BEHAVIORAL

Other Intervention Names

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Sugar pill

Eligibility Criteria

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Inclusion Criteria

* BMI at least 25.0 kg/m2
* Diagnosed with Stage I, II, or III breast cancer within past 5 years
* Treatment with total mastectomy or breast-sparing surgical removal of cancer with clear macroscopic margins, and axillary dissection, followed by adjuvant breast radiation
* Not scheduled for or currently undergoing chemotherapy
* Accessible geographically and by telephone
* Able to communicate dietary and physical activity data via telephone
* If taking statins, tamoxifen, or aromatase inhibitors; able and willing to remain on treatment for 6-month study period
* Post-menopausal at diagnosis

Exclusion Criteria

* Preliminary bloodwork outside of specified ranges
* Evidence of renal insufficiency, liver disease, or congestive heart failure
* Currently taking corticosteroid pills or steroid hormone therapy (including vaginal estrogen creams)
* Recent initiation (\< 3 months ago) of thiazides or β-blockers
* Taking insulin or other antidiabetic drug
* Other primary or recurrent invasive cancer in past 10 years
* Unable to commit to study requirements
Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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University of California, San Diego

OTHER

Sponsor Role lead

Responsible Party

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Ruth E. Patterson

Professor, Department of Family & Preventive Medicine

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Moores UCSD Cancer Center

La Jolla, California, United States

Site Status

Countries

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United States

References

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Bellerba F, Chatziioannou AC, Jasbi P, Robinot N, Keski-Rahkonen P, Trolat A, Vozar B, Hartman SJ, Scalbert A, Bonanni B, Johansson H, Sears DD, Gandini S. Metabolomic profiles of metformin in breast cancer survivors: a pooled analysis of plasmas from two randomized placebo-controlled trials. J Transl Med. 2022 Dec 29;20(1):629. doi: 10.1186/s12967-022-03809-6.

Reference Type DERIVED
PMID: 36581893 (View on PubMed)

Nwanaji-Enwerem JC, Chung FF, Van der Laan L, Novoloaca A, Cuenin C, Johansson H, Bonanni B, Hubbard AE, Smith MT, Hartman SJ, Cardenas A, Sears DD, Herceg Z. An epigenetic aging analysis of randomized metformin and weight loss interventions in overweight postmenopausal breast cancer survivors. Clin Epigenetics. 2021 Dec 17;13(1):224. doi: 10.1186/s13148-021-01218-y.

Reference Type DERIVED
PMID: 34920739 (View on PubMed)

Other Identifiers

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U54CA155435-01

Identifier Type: NIH

Identifier Source: secondary_id

View Link

U54 CA155435-01 Project 3

Identifier Type: -

Identifier Source: org_study_id

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