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Saw Palmetto Use During Radiation Therapy for Symptom Management Among Prostate Cancer Patients

Phase 1/Phase 2
21 Years
Open (Enrolling)
Prostate Cancer

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Trial Information

Saw Palmetto Use During Radiation Therapy for Symptom Management Among Prostate Cancer Patients

Lower urinary tract symptoms (LUTS) affect from 75-80% of men undergoing radiation therapy
(RT) for prostate cancer. The purpose of this study is to determine the feasibility, safety
and efficacy of an inexpensive, non-toxic herbal supplement, Saw Palmetto, in treating these
distressing symptoms.

This trial will use a two group randomized design: either placebo or 1 of 3 doses of Saw
Palmetto (320, 640, 960mg/day) to determine the maximum therapeutic dose (MTD), and obtain
preliminary evidence of efficacy. Within the Saw Palmetto arm, men will be allocated to 1 of
the 3 the doses using the Time-to-Event Continual Reassessment Method and will continue with
the same dose for the 12 week protocol.

Safety data will consist of the Common Terminology for Adverse Events criteria for nausea,
gastritis, and anorexia. Efficacy of the MTD will be evaluated by weekly symptom data and
voiding diary. A pill diary will be used to ensure intervention fidelity.

This study has the potential to reduce the incidence of LUTS for men during RT for cancer of
the prostate and ultimately improve their quality of life during the acute phase of

Inclusion Criteria:

- Age 21 years or older

- Adenocarcinoma of the prostate

- Serum Prostate Specific Antigent (PSA) ≤ 40ng/ml

- Combined Gleason Score ≤ 8

- Karnofsky level of performance of > 70%

- Consented to undergo definitive Radiation Therapy

Exclusion Criteria:

- Stage T4 or M1

- Patient using own supply of Saw Palmetto or any other supplement containing the
following herbs: Pygeum (African Plum), Urtica Dioica (Stinging nettle), Cucurbita
peponis (pumpkin seed), PC-SPES (combination of 8 herbs), Beta-sitsterol (plant
sterols) or Cernilton (rye grass pollen).

- Prior pelvic radiation therapy

- Abnormality in liver and kidney function as evidenced by greater than twice the
normal values of Blood Urea Nitrogen (BUN), serum creatine, serum transaminases, and
alkaline phosphatase.

- Uncontrolled hypertension despite use of antihypertensive medication

- Presence of major psychiatric or medical illness (e.g., major cardiovascular events
within the previous 12 months)

Type of Study:


Study Design:

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver), Primary Purpose: Treatment

Outcome Measure:


Outcome Description:

Assess a Saw Palmetto supplementation protocol for feasibility by evaluation if at least 70% of eligible men consent, and if at least 70% of men enrolled at each dose complete the study.

Outcome Time Frame:

Baseline to Week 12

Safety Issue:


Principal Investigator

Gwen Wyatt, PhD, RN

Investigator Role:

Principal Investigator

Investigator Affiliation:

MichiganState University


United States: Food and Drug Administration

Study ID:

Application ID 213



Start Date:

October 2011

Completion Date:

Related Keywords:

  • Prostate Cancer
  • Prostate Cancer
  • Radiation Therapy
  • Quality of Life
  • Symptom Management
  • Prostatic Neoplasms



St. Joseph Mercy Oakland HospitalPontiac, Michigan  33308
Allegiance HealthJackson, Michigan  49201
Sparrow Cancer CenterLansing, Michigan  48912
McLaren Greater LansingLansing, Michigan  48910
McLaren MacombMount Clemens, Michigan  48043
McLaren Central MichiganMount Pleseant, Michigan  48858