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Study of Proscavax Vaccine in Patients With Localized Prostate Cancer vs Active Surveillance

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03579654
Recruitment Status : Not yet recruiting
First Posted : July 6, 2018
Last Update Posted : March 6, 2019
Sponsor:
Information provided by (Responsible Party):
OncBioMune Pharmaceuticals

Tracking Information
First Submitted Date  ICMJE June 6, 2018
First Posted Date  ICMJE July 6, 2018
Last Update Posted Date March 6, 2019
Estimated Study Start Date  ICMJE February 28, 2019
Estimated Primary Completion Date February 28, 2021   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: February 27, 2019)
  • Prostate cancer progression measured by PSA test [ Time Frame: At pre-study, and then every 3 months till 2 years, starting at week 7 for both arms ]
    Determine prostate cancer progression in patients receiving Proscavax vaccine (Arm 1) versus patients on active surveillance (Arm 2) by measuring change in PSA levels in patients in both arms
  • Prostate cancer progression measured by digital rectal examination (DRE) [ Time Frame: At pre-study and then every 6-months for 2 years ]
    Determine prostate cancer progression in patients receiving Proscavax vaccine (Arm 1) versus patients on active surveillance (Arm 2) by performing digital rectal examination (DRE) on patients in both arms
  • Prostate cancer progression measured by prostate Biopsy [ Time Frame: At pre-study and then every 12-months for 2 years ]
    Determine prostate cancer progression in patients receiving Proscavax vaccine (Arm 1) versus patients on active surveillance (Arm 2) by performing prostate biopsy on patients in both arms
Original Primary Outcome Measures  ICMJE
 (submitted: June 25, 2018)
  • Prostate cancer progression measured by PSA test [ Time Frame: At pre-study, and then every 3 months till 2 years, starting at week 7 for Arm 1 and at study entry for Arm 2 ]
    Determine prostate cancer progression in patients receiving Proscavax vaccine (Arm 1) versus patients on active surveillance (Arm 2) by measuring change in PSA levels in patients in both arms
  • Prostate cancer progression measured by DRE [ Time Frame: At pre-study and then every 6-months for 2 years ]
    Determine prostate cancer progression in patients receiving Proscavax vaccine (Arm 1) versus patients on active surveillance (Arm 2) by performing digital rectal examination (DRE) on patients in both arms
  • Prostate cancer progression measured by prostate Biopsy [ Time Frame: At pre-study and then every 12-months for 2 years ]
    Determine prostate cancer progression in patients receiving Proscavax vaccine (Arm 1) versus patients on active surveillance (Arm 2) by performing prostate biopsy on patients in both arms
Change History
Current Secondary Outcome Measures  ICMJE
 (submitted: February 27, 2019)
  • PSA doubling time [ Time Frame: At pre-study, and then every 3 months till 2 years, starting at week 7 for both arms ]
    Determine the time for the PSA level to double
  • Assessment of Adverse Events [ Time Frame: From first injection until 30 days past the 24-month assessments ]
    Confirm safety and tolerability of Proscavax vaccine
Original Secondary Outcome Measures  ICMJE
 (submitted: June 25, 2018)
  • PSA doubling time [ Time Frame: At pre-study, and then every 3 months till 2 years, starting at week 7 for Arm 1 and at study entry for Arm 2 ]
    Determine the rate of PSA level to double over time
  • Assessment of Adverse Events [ Time Frame: From first injection until 30 days past the 24-month assessments ]
    Confirm safety and tolerability of Proscavax vaccine
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE Study of Proscavax Vaccine in Patients With Localized Prostate Cancer vs Active Surveillance
Official Title  ICMJE A Phase 2, Randomized Study of Proscavax, a PSA/IL-2/GM-CSF Vaccine, in Treatment-naive Patients With Clinically Localized Prostate Cancer Versus an Active Surveillance Strategy
Brief Summary

This study will evaluate the safety and efficacy of a prostate cancer vaccine named Proscavax (Prostate-specific antigen(PSA) / Interleukin-2(IL-2) / Granulocyte-macrophage colony-stimulating factor(GM-CSF)) in patients with localized prostate cancer. The goal of the study is to determine if vaccine administration results in a change in the rate of prostate cancer progression when compared to a no-treatment control group of active surveillance patients.

The researchers are interested in evaluating the proportion of participants with prostate cancer progression at 2 years following administration of Proscavax or active surveillance, the effect of the vaccine on prostate-specific antigen (PSA) doubling time and the assessment of adverse events in these patients.

Eligible patients in this study will include men who are 18 years and older and who have a previously untreated early stage prostate cancer regardless of the date of diagnosis.

Detailed Description

This study will have 2 arms and patients will be randomized 2:1 into the Proscavax treatment arm (Arm 1) versus the active surveillance arm (Arm 2).

In study Arm 1, 6 doses of the vaccine will be administered intradermally at weeks 1, 2, 3, 7, 11, and 15, followed by maintenance booster injections once every month which will alternate between low dose IL-2 alone (at weeks 19, 27 and 35) and Proscavax vaccine (at weeks 23, 31, 39) for 6 months.

In study Arm 2, patients will undergo active surveillance and will not receive any Proscavax vaccine treatment.

Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 2
Study Design  ICMJE Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Condition  ICMJE Prostate Cancer
Intervention  ICMJE Biological: Proscavax
Proscavax is a prostate cancer vaccine which combines the prostate antigen PSA with immune stimulatory cytokines (IL-2 and GM-CSF).
Study Arms  ICMJE
  • Experimental: Arm 1 - Proscavax vaccine treatment
    In this arm, during the first 4 months of induction treatment, 6 doses of the Proscavax vaccine will be administered intradermally at weeks 1, 2, 3, 7, 11, and 15, followed by maintenance booster injections once every month which will alternate between low dose IL-2 alone (at weeks 19, 27 and 35) and Proscavax vaccine (at weeks 23, 31, 39) for 6 months.
    Intervention: Biological: Proscavax
  • No Intervention: Arm 2 - Active Surveillance
    In this arm, patients will undergo active surveillance and will not receive any Proscavax vaccine treatment.
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Not yet recruiting
Estimated Enrollment  ICMJE
 (submitted: June 25, 2018)
120
Original Estimated Enrollment  ICMJE Same as current
Estimated Study Completion Date  ICMJE June 30, 2022
Estimated Primary Completion Date February 28, 2021   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  1. Histologically confirmed adenocarcinoma of the prostate.
  2. Age ≥ 18 years.
  3. Clinically localized prostate cancer:

    • T1 (Cancer can only be seen under a microscope),
    • NX (Regional lymph nodes cannot be assessed) or N0 (Cancer cannot be seen in the lymph nodes),
    • MX (Presence of distant metastasis cannot be assessed) or M0 (Cancer hasn't spread to other parts of the body).
  4. No previous treatment for prostate cancer (including hormonal therapy, radiation therapy, surgery, or chemotherapy).
  5. Eastern Cooperative Oncology Group (ECOG) Performance Status 0 or 1.
  6. Patients must have the following laboratory values:

    1. Absolute neutrophil count (ANC) > 1500/µL
    2. Platelet count >100,000/µL
    3. Hemoglobin > 10 g/dL
    4. Bilirubin < 1.5 x upper limits of normal
    5. Aspartate aminotransferase (AST) < 1.5 x upper limits of normal
    6. Adequate estimated glomerular filtration rate (eGFR) > 30 mL/min per 1.73 m2 (adjusted for race)
  7. Patient consent has been obtained according to local Institutional Review Board for acquisition of research specimens.
  8. Patient is accessible and compliant for follow-up.
  9. Prostate biopsy requirements:

    1. If diagnosis was within one year of baseline visit, participant must have at least one biopsy with at least 10 cores.
    2. If diagnosis was more than 1 year prior to baseline visit, participant must have a minimum of 2 biopsies, one of which must be within 2 years prior to baseline visit. Patients must have been diagnosed with prostate cancer within 2 years of randomization (no history of prostate adenocarcinoma in any biopsies taken more than 2 years prior to randomization).
  10. Must have NCCN low or favorable-intermediate risk prostate cancer defined as:

    • <50% of cores involved with cancer for eligibility and 50% or greater of cores involved with cancer progression. Only cores from standard TRUS biopsy (not MRI-guided cores) will be counted towards the number of cores involved.
    • No primary Gleason pattern 4 (Gleason score 4+3) disease in any cores (TRUS or MRI-guided)
    • PSA less than 20 ng/mL
    • No extracapsular extension (<T3)
  11. Patients with female partners of childbearing potential must use at least one form of Investigator-approved contraception while on-study and for 30 days after their last administration of study investigational therapy. Acceptable birth control options include:

    1. surgical sterilization (patient and/or patient's partner),
    2. approved hormonal contraceptives or therapies (such as birth control pills, Depo-Provera, or Lupron Depot),
    3. barrier methods (such as a condom or diaphragm) used with a spermicide, and
    4. an intrauterine device (IUD).

Exclusion Criteria:

  1. Unwillingness or inability (such as coagulopathy) to undergo serial prostate biopsy.
  2. History of other malignancies, except: adequately treated non-melanoma skin cancer or adequately treated superficial bladder cancer (Ta) or other solid tumors curatively treated with no evidence of disease for > 5 years.
  3. Evidence of metastatic prostate cancer.
  4. Immune-compromised patients including but not limited to: systemic immune suppressive medications within 6 weeks of enrolling; HIV-positive and below normal cluster of differentiation 4 (CD4) lymphocytes (less than 500 cells per microliter). Patients must be tested for HIV seropositivity and CD4 lymphocyte count to be eligible for the study.
  5. Inability to give consent.
  6. Any condition that, according to the investigator, would make the patient an inappropriate study candidate.
  7. Patients with significant cardiac disease including heart failure that meets New York Heart Association (NYHA) class II and IV definitions, history of myocardial infarction within 6 months of study entry, uncontrolled dysrhythmias.
  8. Patients with existing autoimmune disorders (IL-2 and GM-CSF carry risk of exacerbating underlying autoimmune disorders).
Sex/Gender  ICMJE
Sexes Eligible for Study: Male
Ages  ICMJE 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE
Contact: Rupal S Bhatt, MD, PhD (617) 735-2062 rbhatt@bidmc.harvard.edu
Listed Location Countries  ICMJE United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT03579654
Other Study ID Numbers  ICMJE O17-11110
Has Data Monitoring Committee Yes
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement  ICMJE Not Provided
Responsible Party OncBioMune Pharmaceuticals
Study Sponsor  ICMJE OncBioMune Pharmaceuticals
Collaborators  ICMJE Not Provided
Investigators  ICMJE
Principal Investigator: Rupal S Bhatt, MD, PhD Harvard Medical Faculty Physicians Practice
PRS Account OncBioMune Pharmaceuticals
Verification Date March 2019

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP