Prolonged Overnight Fasting and/or Exercise on Fatigue and Other Patient Reported Outcomes in Women With Hormone Receptor Positive Advanced Breast Cancer (FastER)

University of Miami

Status: Enrolling

Conditions: HER2-positive Breast Cancer; Advanced Breast Cancer

Treatments: Behavioral: General Health Education Sessions; Behavioral: Moderate-Intensity Exercise; Behavioral: Prolonged Overnight Fasting

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT06123988

20230599

NCI-2024-08363 (Registry Identifier)

R01CA281861 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

The purpose of this study is to test whether four different supportive care programs can reduce fatigue in women with advanced or metastatic breast cancer who are receiving a medication called a CDK4/6 inhibitor (palbociclib, ribociclib, or abemaciclib) alongwith endocrine therapy with or without a PI3K or AKT inhibitor.

Enrollment: 260 estimated patients

Sex: Female

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Women

2. Able to provide written informed consent

3. Able to speak, read, and understand English or Spanish

4. Postmenopausal (including concurrent use of ovarian suppression)

5. Diagnosis of ER+ and/or PR+, hormone estrogen receptor-2 (HER-2)- or HER-2+ metastatic or locally advanced unresectable breast cancer

6. Initiation of endocrine therapy in combination with a CDK4/6 inhibitor (e.g., palbociclib, ribociclib, or abemaciclib), with or without hormone estrogen receptor-2 (HER2)-directed therapy (e.g., trastuzumab ± pertuzumab), or in combination with both a CDK4/6 inhibitor and a Phosphoinositide 3-kinase (PI3K) or Protein kinase B (AKT) inhibitor, within the past 90 days.

   a) Participants who switch from one CDK4/6 inhibitor to another due to toxicity or insurance constraints remain eligible, provided enrollment occurs within 90 days of initiating the subsequent CDK4/6 inhibitor in the metastatic or locally advanced setting.

7. Having not consistently (not equal to or more than 50% of the time) engaged in more than 90 minutes of moderate or 45 minutes of vigorous physical activity per week over the past 3 months

8. Having not consistently engaged in resistance training 2 or more days per week over the past 3 months

9. Having not consistently (not equal to or more than 50% of the time) engaged in structured fasting (i.e., not regularly fasting for ≥12hr/night) for the past 3 months

10. Approval from a medical oncology provider to participate.

Exclusion criteria

1. Unable to provide consent
2. Unable to read or understand English or Spanish
3. Dependent on supplemental oxygen
4. Unstable cardiac disease
5. Insulin-dependent diabetes
6. Unable to walk 2 blocks without assistance (excluding canes)
7. Regularly maintaining a shiftwork schedule, i.e. working evening shifts, night shifts, or rotating shifts in the last 3 months
8. History of a clinical eating disorder
9. Unstable bone metastases
10. More than 90 days since initiation of endocrine therapy in combination with 1) a CDK4/6 inhibitor, with or without HER2-directed therapy, or 2) a CDK 4/6 inhibitor in combination with a PI3K/AKT inhibitor, in the metastatic or locally advanced.
11. Presence of a severe medical condition or psychiatric condition or medications that would preclude participation of the study intervention.

Trial design

Primary purpose: Supportive Care

Allocation: Randomized

Interventional model: Factorial Assignment

Masking: Single Blind

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260 participants in 4 patient groups

Prolonged Overnighting Fasting Alone (POF Alone) Group

Experimental group

Description:

Participants in this group will undergo a 12-week program of prolonged overnight fasting (POF), and weekly session with a trained health coach. Sessions may be delivered in-person, by telephone or by video call. Participants will receive a Fitbit (activity monitor). Participants will also complete health-related quality of life questionnaires, and undergo blood sample collection at designated study timepoints. Total participant duration is about 12 months.

Treatment:

Behavioral: Prolonged Overnight Fasting

Exercise Alone (EXE Alone) Group

Active Comparator group

Description:

Participants in this group will undergo a 12-week exercise program during three weekly sessions supervised by a trained health coach. Sessions may be delivered in-person, or virtually via telehealth. Participants will receive a Fitbit (activity monitor). Participants will receive exercise equipment (resistance bands, adjustable dumbbells, and a stationary aerobic bike) free of charge and may keep it after the study's completion. Participants will also complete health-related quality of life questionnaires, and undergo blood sample collection at designated study timepoints. Total participant duration is about 12 months.

Treatment:

Behavioral: Moderate-Intensity Exercise

Prolonged Overnight Fasting and Exercise (POF+EXE) Group

Active Comparator group

Description:

Participants in this group will undergo a 12-week combined program of the prolonged overnight fasting and exercise interventions as described in the POF Alone and EXE Alone arm descriptions respectively. Participants will receive a Fitbit (activity monitor). Participants will receive exercise equipment (resistance bands, adjustable dumbbells, and a stationary aerobic bike) free of charge and may keep it after the study's completion. Participants will complete health-related quality of life questionnaires, and undergo blood sample collection at designated study timepoints. Total participation is about 12 months.

Treatment:

Behavioral: Prolonged Overnight Fasting

Behavioral: Moderate-Intensity Exercise

Attention Control (AC) Group

Other group

Description:

Participants in this group will receive other supportive care in the form of general health education sessions with a trained health coach. These bi-weekly sessions will be administered via telephone or video call in six (6) sessions over approximately 12 weeks. Participants will receive a Fitbit (activity monitor). Participants will also complete health-related quality of life questionnaires at designated study timepoints. Total participation is about 12 months.

Treatment:

Behavioral: General Health Education Sessions