Effects of Two Doses of MPX Capsules on Rising Prostate-specific Antigen Levels in Men Following Initial Therapy for Prostate Cancer

April 1, 2021 updated by: Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins

Phase I/II Study of Safety and Efficacy of Muscadine Plus (MPX) in Men With Prostate Cancer: a Randomized,Double-blind,Placebo Controlled Study of the Effects of Two Doses of MPX Capsules on Rising Prostate-specific Antigen Levels in Men Following Initial Therapy for Prostate Cancer

This research is being done to test an investigational product called Muscadine Plus in the treatment of men who have received initial therapy (surgery and or radiation, cryotherapy or brachytherapy) for prostate cancer and are experiencing a rise in their prostate-specific antigens (PSA) level.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

In phase I the investigators are evaluating the safety of the product and checking blood levels of the active components. In phase II the investigators are evaluating the effect of MPX on PSA doubling time

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
143

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

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
    • District of Columbia
      • Washington, District of Columbia, United States, 20016
        • Sibley Memorial Hospital
      • Washington, District of Columbia, United States, 20060
        • Howard University College of Medicine
    • Maryland
      • Baltimore, Maryland, United States, 21205
        • Johns Hopkins Hospital
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Beth Israel Deaconess Medical Center
      • Boston, Massachusetts, United States, 02215
        • Dana Farber Cancer Institute
    • Michigan
      • Detroit, Michigan, United States, 48201
        • Karmanos Cancer Institute
    • New Jersey
      • New Brunswick, New Jersey, United States, 08903
        • Cancer Institute Of New Jersey
    • New York
      • Buffalo, New York, United States, 14263
        • Roswell Park Cancer Institute

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Histologically or cytologically confirmed adenocarcinoma of the prostate.
  • Undergone definitive treatment (surgery, surgery with radiation therapy, cryotherapy, radiation therapy or brachytherapy) for the primary prostate tumor.
  • Rising PSA on a minimum of 3 time points (including screening psa) within the 12 months prior to study initiation.
  • > 18 years of age.
  • Life expectancy of greater than 6 months.
  • Eastern Cooperative Oncology Group (ECOG) performance status 0, 1 or 2.
  • Testosterone level of ≥1.5 ng/mL at screening.
  • Adequate kidney, liver and bone marrow function
  • Agrees to abstain from other commercially available MP products while participating in this study.
  • Subject's use of other dietary/herbal supplements (e.g. saw palmetto, selenium, etc) has been stable for at least 2 months prior to screening and the subject agrees not to stop or change the dose(s) while participating in the study.
  • Signed a written informed consent document and agrees to comply with requirements of the study.

Exclusion Criteria:

  • Known radiographic evidence of metastatic disease, except for presence of positive lymph nodes from the surgical pathology. Pelvic/intraperitoneal lymph nodes less than 2.0 cm maybe considered nonspecific and the patient would be eligible
  • Receipt of any therapies that modulate testosterone levels (e.g., androgen ablative/anti-androgen therapy, 5 alpha reductase inhibitors) for a minimum of 6 months prior to study
  • Prior or concomitant treatment with experimental drugs, high dose steroids, or any other cancer treatment within 4 weeks prior to the first dose of the study product
  • Consumption of Muscadine Plus over the past 2 months
  • Known allergy to muscadine grapes or ellagic acid
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
  • Negative PSA doubling time (1 time point may be excluded per 3e inclusion criteria)

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: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: DOUBLE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
EXPERIMENTAL: Phase 1: Dose-escalation of Muscadine Plus Grape Skin Extract
Muscadine Plus Grape Skin Extract (MPX): Phase I Dose-escalation starts at 500mg daily for 1 cycle (28 days), then increased to 1000mg for 2nd cycle, then increased to 2000mg daily for 3rd cycle, then increased to 3000mg daily for 4th cycle, then increased to maximum dose of 4000mg daily for final cycle. Pills given by mouth once daily for 28 days per cycle.
Drug: Muscadine Plus Grape Skin Extract
Phase I: Dose escalation starts at 500mg pills given by mouth once daily for 28 days per cycle
PLACEBO_COMPARATOR: Phase 2: Placebo control
Randomly-assigned participants receive 8 capsules once daily of placebo composed of pulverized rice for up to 12 cycles (28 days per cycle).
Drug: Placebo oral capsule
Randomly-assigned participants receive 8 capsules once daily of placebo composed of pulverized rice for up to 12 cycles (28 days per cycle).
EXPERIMENTAL: Phase 2: Low-dose MPX
Randomly-assigned participants receive low-dose (500mg) MPX
Drug: Low-dose MPX
Randomly-assigned participants receive one capsule of drug (500mg MPX) and seven capsules of placebo composed of pulverized rice, once daily for up to 12 cycles (28 days per cycle).
EXPERIMENTAL: Phase 2: High-dose MPX
Randomly-assigned participants receive high-dose (4000mg) MPX
Drug: High-dose MPX
Randomly-assigned participants receive 8 capsules of drug (4000mg MPX) once daily for up to 12 cycles (28 days per cycle).

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
(Phase I) Maximum Tolerated Dose
Time Frame: Up to 7 months post-intervention
To determine the recommended dosing for Muscadine Plus and to evaluate the safety and tolerability of Muscadine Plus in prostate cancer patients with rising PSA following definitive therapy.
Up to 7 months post-intervention
(Phase II) Prostate Specific Antigen Doubling Time (PSADT)
Time Frame: Change from baseline to month 12
To define the effects of placebo and two different daily doses of MPX on PSADT in men who have rising PSA after initial definitive therapy for localized prostate cancer.
Change from baseline to month 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Participants With Adverse Events as a Measure of Safety and Tolerability
Time Frame: At month 12 post-intervention
Adverse events reported verbally by patient and documented in study notes.
At month 12 post-intervention
(Phase II) Proportion of Men Whose PSADT Increases Greater Than 33%
Time Frame: At month 12 post-intervention
At month 12 post-intervention
(Phase II) Number of Men With Greater Than 50% Reduction in PSA Compared to Baseline
Time Frame: At month 12 post-intervention
Change in PSA values drawn over study period, taken every 3 months. PSA is measured in ng/mL
At month 12 post-intervention

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Howard University
Prostate Cancer Clinical Trials 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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 1, 2011

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 1, 2015

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 11, 2011

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 16, 2011

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 17, 2011

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 2, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 1, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • J1161

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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