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Metastatic Prostate CancerPhase 2NCT01981122

A Study of Sipuleucel-T With Administration of Enzalutamide in Men With Metastatic Castrate-Resistant Prostate Cancer

A Phase 2 study testing sipuleucel-T and enzalutamide in people with Metastatic Prostate Cancer, run by Dendreon at 19 sites in United States.

Completed

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

Official record
Search all trials

Trial summary

This is a randomized, open-label study designed to assess the effects of sipuleucel-T when administered concurrently or sequentially with enzalutamide. Read more about this study

Who is it for?
Ages 18 years and older, men only
Conditions the study is for
Metastatic Prostate Cancer
What is being tested?
sipuleucel-T and enzalutamide
Could I receive a placebo?
No, everyone receives an active treatment
How many people
52 participants
Where
19 sitesUnited States
Study dates
Sep 2013to 30 Jun 2017
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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

  • Written informed consent provided prior to the initiation of study procedures.
  • Age ≥ 18 years.
  • Histologically documented adenocarcinoma prostate cancer confirmed by a pathology report from prostate biopsy or a radical prostatectomy specimen.
  • Metastatic disease as evidenced by bone metastasis or lymph node metastasis.
  • Castrate-resistant prostate cancer as demonstrated by one of the following:
  • Prostate specific antigen progression.
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  • Progression of measurable disease.
  • Progression of non-measurable disease by soft tissue disease or bone disease.
  • Castration levels of testosterone (≤ 50 ng/dL) achieved via medical or surgical castration.
  • Serum PSA (Prostate specific antigen) ≥ 2.0 ng/mL.
  • Screening ECOG (The Eastern Cooperative Oncology Group )performance status ≤ 1
  • Adequate screening hematologic, renal, and liver function as evidenced by laboratory test results obtained ≤ 28 days prior to registration.
  • Negative serology test for human immunodeficiency virus 1 and 2.
  • Resides within driving distance (round trip within 1 day) of the clinical trial site for the duration of the active phase.

Who cannot join

  • The presence of known lung, liver, or brain metastases, malignant pleural effusions, or malignant ascites.
  • Spinal cord compression, imminent long bone fracture, or any other condition that is likely to require radiation therapy and/or steroids for pain control during the active phase.
  • History of stage 3 or greater cancer, excluding prostate cancer. Basal or squamous cell skin cancers must have been adequately treated and the subject must be disease free at the time of registration. Subjects with a history of stage 1 or 2 cancer must have been adequately treated and been disease free for ≥ 3 years at the time of registration.
  • History of seizures or of predisposing factors for seizures.
  • Child-Pugh Class C hepatic insufficiency.
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to sipuleucel-T, GM-CSF or granulocyte colony stimulating factor (G-CSF).
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  • Previous treatment with sipuleucel-T or enrollment in a sipuleucel-T trial, regardless of whether the subject received sipuleucel-T or control.
  • Previous treatment with enzalutamide.
  • Previous treatment with abiraterone acetate.
  • Previous treatment with ipilimumab.
  • Previous treatment with ketoconazole other than topical use or for treatment of infections (e.g., oral thrush); most recent use must have been ≥ 7 days prior to registration.
  • Previous treatment with any immunotherapy or investigational vaccine.
  • A requirement for ongoing systemic immunosuppressive therapy. Use of inhaled, intranasal, intra-articular, and topical steroids is allowed. Oral or IV steroids to prevent or treat IV contrast reactions are allowed.
  • Previous treatment with chemotherapy for mCRPC, or chemotherapy for any reason ≤ 2 years prior to registration.
  • Use of concomitant medications that may lower the seizure threshold or the use of antiseizure medications ≤ 1 year prior to registration.
  • Received GM-CSF or G-CSF ≤ 90 days prior to registration.
  • Ongoing non-steroidal antiandrogen withdrawal response.
  • Any of the following medications or interventions ≤ 28 days prior to registration:
  • Radiation therapy, either via external beam or brachytherapy.
  • Any systemic steroid. Use of inhaled, intra-nasal, intra-articular, and topical steroids is allowed. Oral or IV steroids to prevent or treat IV contrast reactions are allowed.
  • Any systemic therapy for prostate cancer, except for ADT (Androgen deprivation therapy).
  • Any investigational product for prostate cancer.
  • Major surgery requiring general anesthesia, with the exception of placement of central venous catheters.
  • Inducers and inhibitors of cytochrome P450 (CYP) enzyme CYP2C8 (gemfibrozil and rifampin).
  • Medications that are metabolized by CYP3A4, CYP2C9, or CYP2C19 that have a narrow therapeutic index.
  • Inducers of CYP3A4 (including but not limited to phenytoin, carbamazepine, rifampin, rifabutin, rifapentine, and phenobarbital).
  • A requirement for treatment with opioid analgesics for cancer-related pain ≤ 21 days prior to registration.
  • An active infection requiring parenteral antibiotic therapy or causing fever (temperature > 100.5˚ F or 38.1˚ C) ≤ 1 week prior to registration.
  • Any medical intervention, any other condition, or any other circumstance which could compromise adherence with study requirements or otherwise compromise the study's objectives.

Trial locations and contacts

19 sites in 1 country.

19 sites in 1 country

United States19 sites
  • Johns Hopkins Medicine - Sidney Kimmel Comprehensive Cancer Center

    Baltimore, Maryland, 21231

  • Cleveland Clinic - Taussig Cancer Institute

    Cleveland, Ohio, 44195

  • The Urology Center of Colorado

    Denver, Colorado, 80211

  • North Shore Hematology/Oncology Associates, P.C.

    East Setauket, New York, 11733

  • Fort Wayne Medical Oncology and Hematology, Lutheran Hospital, Parkview Regional Medical Center

    Fort Wayne, Indiana, 46804, 46845

  • USC/Norris Comprehensive Cancer Center

    Los Angeles, California, 90033

  • Uro Partners/ RMD Clinical Research

    Melrose Park, Illinois, 60160

  • Carolina Urologic Research Center

    Myrtle Beach, South Carolina, 29572

  • Urology Associates, PC

    Nashville, Tennessee, 37209

  • Yale University School of Medicine

    New Haven, Connecticut, 06520

  • GU Research Network

    Omaha, Nebraska, 68130

  • Thomas Jefferson University

    Philadelphia, Pennsylvania, 19107

  • Raleigh Hematology Oncology Associates, D.B.A. Cancer Centers of North Carolina

    Raleigh, North Carolina, 27607

  • Virginia Mason Medical Center, Virginia Mason Hospital

    Seattle, Washington, 98101

  • Associated Medical Professionals of New York, PLLC

    Syracuse, New York, 13210

  • Northwest Medical Specialties, Rainier Physicians

    Tacoma, Washington, 98405

  • H. Lee Moffitt Cancer and Research Center

    Tampa, Florida, 33612

  • Urological Associates of Southern Arizona, P.C.

    Tucson, Arizona, 85741

  • Urology of Virginia

    Virginia Beach, Virginia, 23462

Other trials in United States

About this study

Official title: A Randomized, Open-label, Phase 2 Study of Sipuleucel-T With Concurrent Versus Sequential Administration of Enzalutamide in Men With Metastatic Castrate-Resistant Prostate Cancer

This is a randomized, open-label study designed to assess the effects of sipuleucel-T when administered concurrently or sequentially with enzalutamide.

Read the detailed description

This is a randomized, open-label study designed to assess the effects of sipuleucel-T when administered concurrently or sequentially with enzalutamide. This study consists of 3 phases. The screening phase will begin at the completion of the informed consent process and continue through registration. The active phase will begin at registration and continue through the post-treatment visit (30 to 37 days following the last study treatment). The long term follow-up (LTFU) phase will begin after the post-treatment visit and will continue until the subject's death or until Dendreon terminates the study.

Being tested
sipuleucel-T, enzalutamide
Medical subject headings
Prostatic Neoplasms

What participants receive

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

  • sipuleucel-TBiological

    Also called PROVENGE(R), APC8015

    Sipuleucel-T is an autologous cell product consisting of antigen presenting cells (APCs) loaded with PA2024, a recombinant fusion protein composed of prostatic acid phosphatase (PAP), linked to granulocyte-macrophage colony-stimulating factor (GM-CSF).

  • enzalutamideDrug

    Also called Xtandi

    Enzalutamide is an androgen receptor inhibitor. It is indicated for the treatment of patients with mCRPC who have previously received docetaxel. The enzalutamide dose used in this study will be 160 mg orally once daily.

Study groups in NCT01981122
Study groupRoleWhat they receive
Concurrent ArmExperimentalSubjects will receive sipuleucel-T concurrently with enzalutamide (160 mg orally once daily). Enzalutamide treatment will start 2 weeks prior to the first leukapheresis and continue for 52 weeks or until disease progression or unacceptable toxicity, whichever occurs first.
Receives: Biological: sipuleucel-T; Drug: enzalutamide
Sequential ArmExperimentalSubjects will receive sipuleucel-T followed by enzalutamide (160 mg orally once daily). Enzalutamide treatment will start approximately 10 weeks after the first infusion of sipuleucel-T and continue for 52 weeks or until disease progression or unacceptable toxicity, whichever occurs first.
Receives: Biological: sipuleucel-T; Drug: enzalutamide

What is being measured

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

  1. To Evaluate Peripheral PA2024-specific T Cell Proliferation Response to Sipuleucel-T Over Time Via a T Cell Stimulation Index (SI).

    PA2024-specific T cell proliferation responses over time will be compared between the concurrent arm and sequential arm using a repeated measurement mixed model analysis. The unit of analysis for the T cell proliferation data is the stimulation index, defined as the median 3H uptake of 3 wells exposed to antigen divided by the median 3H thymidine uptake of 3 wells exposed to media. The stimulation index will be log-transformed prior to analysis.

    Measured: Each patient was followed for up to 52 weeks after the first dose of sipuleucel-T. Immune sample draws during the treatment period (Week 0 through Week 4) were to be performed at the patient's pre-leukapheresis visits (Pre-Leuk 2 and Pre-Leuk 3).

Timeline

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

  1. First posted11 Nov 2013 (estimated)
  2. Study startSep 2013
  3. Primary completion30 Jun 2017
  4. Study completion30 Jun 2017

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
Basic science
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
52 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01981122
Sponsor's protocol ID
P12-2
Status last verified
Sep 2018
First submitted
29 Oct 2013
Last updated
24 Oct 2018
Data monitoring committee
Yes

Publications

  • Antonarakis ES, Subudhi SK, Pieczonka CM, Karsh LI, Quinn DI, Hafron JM, Wilfehrt HM, Harmon M, Sheikh NA, Shore ND, Petrylak DP. Combination Treatment with Sipuleucel-T and Abiraterone Acetate or Enzalutamide for Metastatic Castration-Resistant Prostate Cancer: STAMP and STRIDE Trials. Clin Cancer Res. 2023 Jul 5;29(13):2426-2434. doi: 10.1158/1078-0432.CCR-22-3832.

    PubMed 37058234

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing sipuleucel-T and enzalutamide in people with Metastatic Prostate Cancer, run by Dendreon at 19 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 14 inclusion and 29 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 24 Oct 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 19 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?

Yes. Results are posted in the registry (first posted 25 Sep 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

To Evaluate Peripheral PA2024-specific T Cell Proliferation Response to Sipuleucel-T Over Time Via a T Cell Stimulation Index (SI). (time frame: Each patient was followed for up to 52 weeks after the first dose of sipuleucel-T. Immune sample draws during the treatment period (Week 0 through Week 4) were to be performed at the patient's pre-leukapheresis visits (Pre-Leuk 2 and Pre-Leuk 3).). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01981122, which also lists 1 linked publication.

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 24 Oct 2018.

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