Diet and Physical Activity Intervention for the Prevention of ADT-Induced Metabolic Changes in Patients With Prostate Cancer, TRIPLE-A PILOT Study

January 7, 2026 updated by: Marian Neuhouser, Fred Hutchinson Cancer Center

TRIPLE-A PILOT: Actively Intercepting ADT-Induced Metabolic Aberrations in Newly Diagnosed Prostate Cancer

This clinical trial studies the effects of a diet and physical activity intervention on blood measures of lipids and insulin resistance in patients with prostate cancer undergoing radiation therapy (RT) and androgen deprivation therapy (ADT). ADT effectively slows the growth of prostate cancer cells, thereby enhancing the therapeutic effectiveness of RT. Despite the clinical gains, ADT leads to an array of side effects including insulin resistance, abnormal lipid levels, weight gain, increased visceral fat mass coupled with increased muscle wasting, and quality of life deterioration. A diet and physical activity intervention may intercept or prevent the abrupt metabolic and physiologic changes caused by androgen deprivation therapy in prostate cancer patients receiving ADT and RT.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

OUTLINE:

Patients are randomized to 1 of 2 groups.

GROUP I (DIET AND PHYSICAL ACTIVITY): Patients attend 10 in-person or virtual sessions with a registered dietitian over 6 months to receive instructions on a modified DASH diet. Patients also attend 2 one-on-one sessions with an exercise psychologist to receive instruction to complete aerobic physical activity and strength/resistance training. Patients may also complete up to 21 additional supervised exercise sessions.

GROUP II (CONTROL): Patients attend a single in-person or virtual session with a registered dietitian to receive standard lifestyle recommendations based on the United States (US) dietary guidelines, activity goal of 30 minutes of physical activity 5 days/week; and discussion of the health benefits of weight maintenance.

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Washington
      • Seattle, Washington, United States, 98109
        • Fred Hutch/University of Washington Cancer Consortium

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

Ages Eligible for Study

40 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age >= 40 years
  • Histologically confirmed adenocarcinoma of the prostate, (D'Amico risk category intermediate or high risk, localized or locoregional)
  • Primary treatment is RT + ADT [Zoladex, Lupron, Degarelix, and other luteinizing hormone-releasing hormone (luteinizing hormone releasing hormone [LHRH])-directed therapies] with standard RT dose and fractionation (anti-androgen monotherapy will not be allowed
  • Physically able to undertake an exercise program

Exclusion Criteria:

  • Advanced, metastatic disease
  • Planning to join a commercial/structured diet change or fitness program
  • Have significant pre-existing T2D (poor glycemic control while on medication, defined as hemoglobin A1c of >= 10 within the prior 12 months) or significant pre-existing cardiovascular disease (CVD) (myocardial infarction or stroke within prior six months)
  • Physician confirmed cognitive impairment or alcohol/narcotic abuse

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: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Group I (diet, physical activity)
Patients attend 10 in-person or virtual sessions with a registered dietitian over 6 months to receive instruction on healthy dietary pattern. Patients also attend 2 one-on-one sessions with an exercise physiologist to receive instruction on aerobic physical activity and strength/resistance training. Patients may also complete up to 21 additional supervised exercise sessions.
Other: Quality-of-Life Assessment
Ancillary studies
Other Names:
  • Quality of Life Assessment
Other: Questionnaire Administration
Ancillary studies
Other: Dietary Intervention
Receive dietary instructions
Other Names:
  • Dietary Modification
  • intervention, dietary
  • Nutrition Intervention
  • Nutrition Interventions
  • Nutritional Interventions
Other: Exercise Intervention
Complete aerobic and strength/resistance exercises
Active Comparator: Group II (standard lifestyle recommendations)
Patients attend a single session with a dietitian to review healthy lifestyle recommendations, including US dietary guidelines and 30 minutes of physical activity 5 days/week.
Other: Quality-of-Life Assessment
Ancillary studies
Other Names:
  • Quality of Life Assessment
Other: Questionnaire Administration
Ancillary studies
Other: Best Practice
Receive standard lifestyle recommendations
Other Names:
  • standard of care
  • standard therapy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Effects of the Intervention on ADT-induced Changes in Homeostatic Model Assessment of Insulin Resistance (HOMA-IR)
Time Frame: 0 months, 6 months
Data is reported as a percentage change in Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) score from baseline. HOMA-IR is an index to estimate the insulin resistance of a patient. HOMA-IR is defined as (glucose (mg/dl) insulin (uIU/ml)) / 405.
0 months, 6 months
Effects of the Intervention on ADT-induced Changes in Body Weight
Time Frame: 0 months, 6 months
Change in body weight from baseline.
0 months, 6 months
Effects of the Intervention on ADT-induced Changes in Waist Circumference
Time Frame: 0 months, 6 months
Change in waist circumference from baseline. Waist circumference was measured at 1" above umbilicus.
0 months, 6 months
Effects of the Intervention on ADT-induced Changes in Lean Mass
Time Frame: 0 months, 6 months
Change in lean mass from baseline. Lean mass was measured by Dual-Energy X-ray Absorptiometry (DEXA).
0 months, 6 months
Effects of the Intervention on ADT-induced Changes in Fat Mass
Time Frame: 0 months, 6 months
Change in fat mass from baseline. Fat mass was measured by Dual-Energy X-ray Absorptiometry (DEXA).
0 months, 6 months

Collaborators and Investigators

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

Sponsor

Fred Hutchinson Cancer Center

Collaborators

National Cancer Institute (NCI)

Investigators

  • Principal Investigator: Marian L. Neuhouser, Fred Hutch/University of Washington Cancer Consortium

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 (Actual)

November 4, 2021

Primary Completion (Actual)

December 18, 2024

Study Completion (Actual)

December 18, 2024

Study Registration Dates

First Submitted

April 19, 2021

First Submitted That Met QC Criteria

April 28, 2021

First Posted (Actual)

May 3, 2021

Study Record Updates

Last Update Posted (Actual)

January 9, 2026

Last Update Submitted That Met QC Criteria

January 7, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • RG1121348
  • P50CA097186 (U.S. NIH Grant/Contract)
  • NCI-2021-02762 (Registry Identifier: CTRP (Clinical Trial Reporting Program))
  • 10669 (Other Identifier: Fred Hutch/University of Washington Cancer Consortium)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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