Pharmacokinetic and Efficacy Study of Nordihydroguaiaretic Acid (NDGA) in Non Metastatic Recurrent Prostate Cancer

March 11, 2014 updated by: University of California, San Francisco

A Phase II Pharmacokinetic and Efficacy Study of Nordihydroguaiaretic Acid (NDGA) in Non-Metastatic Recurrent Prostate Cancer

This is a Phase II, single center study measuring the pharmacokinetic parameters of NDGA administration and assessing the proportion of patients who experience a 50% decline in PSA.

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Detailed Description

This study is a phase II trial of NDGA in patients with hormone-sensitive non-metastatic prostate cancer with a pharmacokinetics component. The first six patients enrolled will be treated with a single 750 mg dose of oral NDGA on day -7 with measurement of pharmacokinetic parameters over eight hours after the dose, then begin treatment with 2000 mg of oral NDGA daily. Every four weeks, measurement of pharmacokinetic parameters at steady state will be done for all patients. All patients will continue dosing with NDGA and will be followed for PSA response and for safety. Measurement of pharmacokinetics for a 750 mg dose has been chosen to evaluate levels with the dosage that patients will be taking at one time point during the day (this is roughly one-third of the daily dose, which is administered in three divided doses).

Study Type

Interventional

Enrollment (Actual)

12

Phase

  • Phase 2

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
    • California
      • San Francisco, California, United States, 94115
        • UCSF Helen Diller Family Comprehensive Cancer Center

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

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Rising prostate-specific antigen (PSA) value after local therapy with a PSA doubling time (PSADT) between 6 and 24 months (four or more readings at least two weeks apart within the last six months)

  • Prior definitive therapy for prostate cancer consisting of one of the following:

    1. External beam radiotherapy with or without hormone therapy
    2. Brachytherapy with or without pelvic external beam radiation or hormone therapy
    3. Radical prostatectomy with or without adjuvant or salvage radiation therapy
  • PSA > 1 ng/ml, which has risen serially on two determinations at least one week apart
  • Progressive disease by "Phoenix" consensus definition for patients who have undergone primary radiation therapy (PSA nadir + 2 ng/mL)
  • No metastatic disease

  • Prior adjuvant or neoadjuvant androgen deprivation is permitted, provided:

    1. > 6 months since last day of effective androgen deprivation
    2. Testosterone > 250 ng/dL
    3. Patient is not on intermittent androgen deprivation
  • Karnofsky performance status (KPS) of > 70%
  • Liver Function Tests are within normal range
  • Glycated hemoglobin (HgA1c) < 6%
  • Patients must be four weeks from major surgery or radiotherapy to be eligible

Exclusion Criteria:

  • Presence of another active malignancy other than prostate cancer, or treated squamous/basal cell carcinoma of the skin. Concomitant medical condition which would make it undesirable, in the physician's opinion, for the patient to participate in the protocol or would jeopardize compliance with the protocol requirements
  • Diabetes mellitus, unless diet-controlled
  • Must be off saw palmetto, pomegranate juice, finasteride, or any herbal agent intended to lower PSA for > 4 weeks. Baseline PSADT calculation must occur off of these agents
  • Patients may not have evidence of local-only recurrence of prostate cancer
  • No history of liver disease, including Hepatitis B or C, alcoholic liver disease, or autoimmune liver disease. A prior history of Hepatitis A is allowed provided that baseline liver function tests are within normal limits
  • Patients with castration resistant prostate cancer are ineligible (prostate cancer which has progressed on androgen deprivation therapy with a Luteinizing hormone-releasing hormone (LHRH)-agonist or orchiectomy)

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 1
Drug: Nordihydroguaiaretic Acid (NDGA)
NDGA 2000mg daily

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Prostate Specific Antigen (PSA) Response According to Consensus Criteria
Time Frame: Monthly, up to 29 months
Participants who experienced a PSA decline of at least 50%, confirmed by a second PSA value 4 or more weeks later. The reference PSA for decline was a PSA measured within 2 weeks of beginning study treatment. If at most 1 PSA response was observed among the first 12 patients, then accrual would stop and the trial would close for futility.
Monthly, up to 29 months

Collaborators and Investigators

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

Sponsor

University of California, San Francisco

Collaborators

Insmed Incorporated

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

May 1, 2008

Primary Completion (Actual)

February 1, 2011

Study Completion (Actual)

June 1, 2011

Study Registration Dates

First Submitted

May 12, 2008

First Submitted That Met QC Criteria

May 14, 2008

First Posted (Estimate)

May 15, 2008

Study Record Updates

Last Update Posted (Estimate)

April 9, 2014

Last Update Submitted That Met QC Criteria

March 11, 2014

Last Verified

March 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 075511

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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