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Immunotherapy After Chemotherapy for Patients With Hormone Refractory Metastatic Prostate Cancer

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. Read our disclaimer for details. Identifier: NCT00283829
Recruitment Status : Completed
First Posted : January 30, 2006
Last Update Posted : November 29, 2007
Information provided by:
University of Washington

Brief Summary:

The purpose of this study is to test if interleukin-2, a drug that stimulates the immune system, can be used after chemotherapy to slow the progression of your disease. We also want to test what the best dose of interleukin-2 is that can be used safely at home.

Interleukin-2, abbreviated as IL2, is a naturally produced growth hormone for the immune cells in our body. It stimulates the growth of the immune cells and enhances their ability to fight infections and cancers. In people with cancer, the immune cells are typically suppressed and became even more so after irradiation and chemotherapy treatment. By giving you more IL2 we hope to enhance the immune system so that it can fight the cancer better, control cancer growth and shrink the cancer.

Condition or disease Intervention/treatment Phase
Prostate Cancer Drug: docetaxel Drug: IL2 Phase 1 Phase 2

Detailed Description:

There are two treatment phases in this study. But before you begin in the study, we will need to find out whether you are eligible for the study. You will undergo the following procedures.

  • Medical history review and physical exam
  • Blood tests for hematology, chemistries, PSA, and immune assays (approximately 4 tablespoons of blood)
  • EKG
  • CT scan of the abdomen and pelvis and a bone scan
  • Complete a pain questionnaire, quality of life questionnaire, pain medication diary, and symptom diary

The initial treatment phase of this study consists of chemotherapy drug given weekly. You will receive 3 weekly chemotherapy treatments followed by 1 week with no treatment. Three weeks of treatment followed by one week of no treatment is considered 1 cycle, and you will receive a total of 4 cycles of chemotherapy over a 16-week period. Taxotere is given intravenously in the clinic on the 1st day of each weekly treatment.

Treatment with taxotere is a currently accepted treatment for this stage prostate cancer. Your doctor may recommend you receive taxotere even if you do not participate in this study. During this phase of treatment, you will have blood draws on treatment weeks prior to having the chemotherapy. You will have a PSA drawn every month (weeks 5, 9, and 13). We will ask you to complete a pain questionnaire, quality of life questionnaire, pain medication diary, and symptom diary at weeks 5, 9, and 13. Some of the questions may be personal, such as "I am satisfied with my sex life" and "I worry about dying". You do not have to answer these questions if you do not want to. You will also have a physical exam at the beginning of your 3rd cycle of treatment (week 9).

The second phase of the treatment program is the experimental part: immunotherapy with IL2. You will be assigned to receive one of 4 doses of IL2. This is because we are testing what is the highest dose of IL2 that a subject can receive without having unacceptable side affects from the IL2. You will give yourself shots of IL2 under the skin twice a day for 5 days per week for 3 weeks. During the 3rd week of treatment there are 2 days when you have to give a higher dose of IL2 for boosting the immune cells (see below diagram). The 4th week will be a rest week where you do not receive treatment. One 4-week period of IL2 treatment is called a cycle. You will continue to receive cycles of IL2 treatment as long as your cancer shows no further growth. We will teach you how to administer the IL2 at home.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 30 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Immunotherapy With Low Dose Interleukin-2 After Cytoreductive Chemotherapy for Patients With Hormone Refractory Metastatic Prostate Cancer: A Phase I/II Study
Study Start Date : September 2002
Actual Study Completion Date : July 2006

Resource links provided by the National Library of Medicine

Drug Information available for: Docetaxel

Arm Intervention/treatment
Docetaxel followed by IL-2
Drug: docetaxel
Other Name: taxotere

Drug: IL2
Other Name: Interleukin

Primary Outcome Measures :
  1. To determine the feasibility of sequencing low dose SQ IL-2 with chemotherapy in patients with hormone refractory prostate cancer (HRPC) in an outpatient setting. [ Time Frame: 2 years ]

Secondary Outcome Measures :
  1. To determine the impact of docetaxel on the natural immune defense system in patients before IL-2 administration. [ Time Frame: 2 years ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients are age >18 years with histological diagnosis of prostate cancer
  • Hormone refractory disease with at least 2 serial rises in PSA with a castrate level of testosterone (< 50ng/dL). Primary hormonal therapy will be continued.
  • Patients must have metastatic disease as evidenced by soft tissue or bony metastasis
  • Patients have an ECOG performance status of 0, 1, 2
  • Patients must have preserved organ function
  • Bilirubin < ULN and serum creatinine 1.5 x ULN, transaminases (SGOT and/or SGPT) may be up to 2.5 x institutional upper limit of normal (ULN) if alkaline phosphatase is ULN, or alkaline phosphatase may be up to 4 x ULN if transaminases are ULN.
  • Patients must be off chronic steroid treatment for at least 2 weeks, and pre-/post-chemotherapy steroid medication for at least 1 week
  • Patients may not receive Taxanes previously.
  • Patients must be able to complete pain and quality of life scales.
  • Ancillary treatments, such as bisphosphonate, pain medication is allowed, but natural herbal, homeopathic supplements such as MGN-3 is not allowed.
  • Absolute neutrophil count > 1,500/mm3, hemoglobin > 8.0 g/dl, platelet count > 100,000/mm3.
  • Men of childbearing potential must be willing to consent to using effective contraception while on treatment and for a 12 month period thereafter.

Exclusion Criteria:

  • Patients on chronic steroid medication
  • Spine radiation therapy for cord compression within 2 weeks of study entry
  • Concurrent use of other investigational therapy
  • Prior immunotherapy with IL2 or alpha-interferon within 30 days
  • Peripheral neuropathy > Grade 1
  • Other active malignancy, except non-melanotic skin cancer
  • Significant active medical illness or psychosocial condition that in the opinion of the investigator would preclude protocol treatment.
  • Hypersensitivity to drugs formulated with polysorbate-80
  • Patients with contraindications to Coumadin or aspirin.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00283829

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United States, Washington
Seattle Cancer Care Alliance
Seattle, Washington, United States, 98109
Sponsors and Collaborators
University of Washington
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Principal Investigator: Celestia Higano, MD University of Washington
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Responsible Party: Celestia Higano, MD, University of Washington Identifier: NCT00283829    
Other Study ID Numbers: 02-3017-A-04
First Posted: January 30, 2006    Key Record Dates
Last Update Posted: November 29, 2007
Last Verified: November 2007
Keywords provided by University of Washington:
Additional relevant MeSH terms:
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Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Genital Diseases, Male
Prostatic Diseases
Antineoplastic Agents
Tubulin Modulators
Antimitotic Agents
Mitosis Modulators
Molecular Mechanisms of Pharmacological Action