a study on Prostate Cancer
This randomized phase II trial studies how well glycosylated recombinant human interleukin-7 (CYT107) after vaccine therapy works in treating patients with hormone-resistant prostate cancer that has spread to other areas of the body or has not responded to at least one type of treatment. Biological therapies, such as glycosylated recombinant human interleukin-7, may stimulate the immune system in different ways and stop tumor cells from growing. Vaccines made from white blood cells mixed with tumor proteins may help the body build an effective immune response to kill tumor cells. It is not yet known whether glycosylated recombinant human interleukin-7 works better with or without vaccine therapy in treating prostate cancer.
A Phase 2 Study of Recombinant Glycosylated Human Interleukin-7 (CYT107) After Completion of Standard FDA Approved Therapy With Sipuleucel-T (Provenge®) for Patients With Asymptomatic or Minimally Symptomatic Metastatic Castration-Resistant Prostate Cancer (mCRPC)
I. To determine whether CYT107 administration increases the vaccine-induced antigen-specific T-cell immune response to the sipuleucel-T fusion protein vaccine construct prostatic acid phosphatase-sargramostim (PAP-GM-CSF) (PA2024).
I. To determine whether CYT107 administration increases the vaccine-induced antigen-specific T-cell immune response to PAP.
II. To assess the character of the T-cell immune response to PAP and PA2024.
III. To determine whether CYT107 administration increases the vaccine-induced antigen-specific antibody immune responses to PAP and PA2024.
IV. To quantify the effects of CYT107 on T-cell repertoire diversity.
V. To assess the effects of CYT107 on the immune competence of patients with advanced prostate cancer.
VI. To assess the clinical efficacy and tolerability of sipuleucel-T plus CYT107 compared with sipuleucel-T alone.
OUTLINE: Patients are randomized to 1 of 2 treatment arms.
COHORT I: Patients receive no treatment (observation) after completion of standard sipuleucel-T therapy.
COHORT II: Patients receive glycosylated recombinant human interleukin-7 subcutaneously (SC) every week for 4 weeks (on days 0, 7, 14, and 21) beginning 3-7 days after completion of standard sipuleucel-T therapy. Treatment continues in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up for 53 weeks.
Hormone-Resistant Prostate Cancer Metastatic Prostate Carcinoma Recurrent Prostate Carcinoma Stage IV Prostate Cancer
Open to males ages 18 years and up
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