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Prostate CancerPhase 2NCT00557037

A Phase II Trial of Phenoxodiol in Patients With Castrate and Non-Castrate Prostate Cancer

A Phase 2 study testing Phenoxodiol in people with Prostate Cancer, run by MEI Pharma, Inc. at 2 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Two groups of patients with prostate cancer will be enrolled: Group A: patients whose cancer has worsened or spread after being on hormonal therapy and has not had any chemotherapy. Read more about this study

Who is it for?
Ages 18 years and older, men only
Conditions the study is for
Prostate Cancer
What is being tested?
Phenoxodiol
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
60 participants
Where
2 sitesUnited States
Study dates
Nov 2007to Nov 2009
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • All patients must have histologically or cytologically confirmed adenocarcinoma of the prostate
  • Patients with castrate and non-castrate levels of testosterone are eligible as defined below.
  • Patients with castrate level of testosterone (Group A- androgen independent disease) need to meet the following criteria:
  • Progressive disease based on any one of the following
  • a rise in PSA, b) transaxial imaging, or c) radionuclide bone scan. Patients whose sole manifestation of progression is an increase in disease related symptoms are not eligible.
  • PSA - a minimum of 3 consecutive rising levels, with an interval of > 1 week between each determination. The last determination must have a minimal value of > 4 ng/ml and be determined within two weeks prior to registration.
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  • Measurable Disease: Patient showing new or progressive soft tissue masses on CT or MRI scans are eligible.
  • Radionuclide bone scan: New metastatic lesions.
  • Serum testosterone < 50 ng/ml, determined within two weeks prior to starting treatment
  • Maintaining castrate status: Patients who have not undergone surgical orchiectomy should continue on medical therapies [i.e. gonadotropin releasing hormone analogs (GnRH analogs) to maintain castrate levels of serum testosterone. Patients who are receiving an anti-androgen as part of their first-line hormonal therapy must have shown progression of disease off of the anti-androgen prior to enrollment. Patients must discontinue Megestrol Acetate (MEGACE) and show progression of disease off of this medication.
  • No prior chemotherapy except for adjuvant or neo-adjuvant therapy given > than 3 years prior to enrollment
  • No more than one prior course of palliative radiotherapy. No prior radioisotope therapy with Strontium-89 or Samarium.
  • Patients with non-castrate levels of testosterone (Group B- androgen dependent disease) need to meet the following criteria:
  • A rising PSA after radical prostatectomy, radiotherapy or radiation implants with no evidence of metastatic disease on bone, CT scan or MRI scan.
  • PSA doubling time less than 12 months
  • Testosterone level > 50 ng/ml
  • Age > 18 years of age.
  • Karnofsky Performance Status > 70%
  • Four weeks since major surgery.
  • Patients must have signed an informed consent document stating that they understand the investigational nature of the proposed treatment.
  • Required Initial Laboratory Data:
  • WBC > 3,000/µl
  • ANC > 1,500/µl
  • Hemoglobin > 9 g/dl
  • Platelet count > 100,000/µl
  • Creatinine < 1.5 x upper limits of normal
  • Bilirubin within 2 x normal limits
  • SGOT (AST) < 2.5 x upper limits of normal
  • SGPT (AST) < 2.5 x upper limits of normal
  • PSA > 4.0 ng/ml (if no measurable disease for Group B) > 4.0 ng/ml for Group A
  • PT within normal limits(*)
  • PTT within normal limits(*)
  • ()unless patients are already anti-coagulated for other reasons (i.e. atrial fibrillation, etc.)
  • Agree to use adequate contraception (hormonal or barrier method of birth control) prior to study entry and for the duration of study participation and for additional 1 months after finishing Phenoxodiol.
  • Able to swallow and retain oral medication
  • Life expectancy >3 months

Who cannot join

  • Patients may not be receiving any other investigational agents.
  • Patients may continue on a daily Multi-Vitamin and Calcium supplements but all other herbal, alternative and food supplements (i.e. PC-Spes, Saw Palmetto, St John Wort, etc.) must be discontinued before registration.
  • Bisphosphonate therapy for bone metastases is allowed; however, treatment must be initiated prior to the first dose of PXD. Prophylactic use of bisphosphonates in patients without bone disease, except for the treatment of osteoporosis, and initiation of bisphosphonates during study treatment is not permitted.
  • Patients with known brain metastases should be excluded from this clinical trial because of their poor prognosis and because they often develop progressive neurologic dysfunction that would confound the evaluation of neurologic and other adverse events.
  • Patients with significant cardiovascular disease including congestive heart failure (New York Heart Association Class III or IV), active angina pectoris or recent myocardial infarction (within the last 6 months) are excluded.
  • Patients with prior history of hemorrhagic or thrombotic cerebral vascular accident, deep venous thrombosis or pulmonary embolism within the past 6 months are excluded.
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  • Patients with a "currently active" second malignancy other than non-melanoma skin cancers are not to be registered. Patients are not considered to have a "currently active" malignancy if they have completed therapy and are now considered (by their physician) to be at less than 30% risk for relapse.
  • 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.
  • Because patients with immune deficiency are at increased risk of lethal infections when treated with marrow-suppressive therapy, HIV-positive patients receiving combination anti-retroviral therapy are excluded from the study because of possible pharmacokinetic interactions with Phenoxodiol. Appropriate studies will be undertaken in patients receiving combination anti-retroviral therapy when indicated.

Trial locations and contacts

2 sites in 1 country.

United States2 sites
  • Yale Cancer Center

    New Haven, Connecticut, 06520

  • VA Connecticut Healthcare System

    West Haven, Connecticut, 06516

Other trials in United States

About this study

Two groups of patients with prostate cancer will be enrolled:

Group A: patients whose cancer has worsened or spread after being on hormonal therapy and has not had any chemotherapy.

Read more

Group B: patients who have a rising PSA after surgery or radiotherapy for the prostate and do not have any spread to the bones or other organs.

Patients will receive Phenoxodiol (PXD) 400 mg every 8 hours daily for 28 consecutive days (1 cycle). Treatment outcome will be evaluated after three cycles (12 weeks) of PXD treatment (immediately prior to cycle 4). Patients with progression of disease will be taken off study. Responding and stable disease patients will remain on study for a total of 12 cycles(approximately 12 months).

Conditions
Prostate Cancer
Being tested
Phenoxodiol
Keywords
Castrate and Non-Castrate Prostate Cancer
Medical subject headings
Prostatic Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • PhenoxodiolDrug

    Oral capsule, 400 mg every 8 hours daily, for 12 weeks - assement to a maximum of 12 months

Study groups in NCT00557037
Study groupRoleWhat they receive
AExperimentalPatients with chemotherapy naïve androgen independent disease
Receives: Drug: Phenoxodiol
BExperimentalPatients with rising PSA after radical prostatectomy or radiotherapy that are androgen dependent
Receives: Drug: Phenoxodiol

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. The proportion of patients that have a 50% post-therapy PSA decline at 12 weeks in patients with: a)Chemotherapy naïve androgen independent disease (Group A) b)Rising PSA after radical prostatectomy or radiotherapy that are androgen dependent (Group B)

    Measured: 12 weeks

Secondary outcomes (1)
  1. To determine the proportion of patients treated with Phenoxodiol that has measurable disease regression at 12 weeks in patients with chemotherapy naïve androgen independent disease.

    Measured: 12 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Nov 2007 (estimated)
  2. Study startNov 2007
  3. Study completionNov 2009

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
60 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00557037
Sponsor's protocol ID
Yale 0703002467
Status last verified
Apr 2010
First submitted
8 Nov 2007
Last updated
8 Apr 2010
Results posted
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Phenoxodiol in people with Prostate Cancer, run by MEI Pharma, Inc. at 2 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 36 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 8 Apr 2010. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

The proportion of patients that have a 50% post-therapy PSA decline at 12 weeks in patients with: a)Chemotherapy naïve androgen independent disease (Group A) b)Rising PSA after radical prostatectomy or radiotherapy that are androgen dependent (Group B) (time frame: 12 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Apr 2010.

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