Immunotherapy using Sipuleucel-T for advanced prostate cancer

Pilot Trial to Investigate Immune Response to an Extended Course of Sipuleucel-T Immunotherapy in Patients With Metastatic Castration-resistant Prostate Cancer (OU-SCC-EXCITE)

PHASE1 · University of Oklahoma · NCT05806814

This study is testing if giving three doses of a new immune therapy called Sipuleucel-T can help improve the health of men with advanced prostate cancer that doesn't respond to hormone treatment.

Quick facts

PhasePHASE1
Study typeInterventional
Enrollment13 (estimated)
Ages18 Years and up
SexMale
SponsorUniversity of Oklahoma (other)
Drugs / interventionsPrednisone, immunotherapy
Locations1 site (Oklahoma City, Oklahoma)
Trial IDNCT05806814 on ClinicalTrials.gov

What this trial studies

This pilot trial investigates the feasibility of administering Sipuleucel-T, an autologous cellular immunotherapy, in three doses to patients with metastatic castration-resistant prostate cancer (mCRPC). The treatment is designed to enhance the immune response against cancer by utilizing antigen presenting cells. Participants will receive doses at weeks 0, 2, and 12-14, and the study will monitor changes in immune response and treatment efficacy. The trial aims to determine if an extended course of Sipuleucel-T can improve outcomes for these patients.

Who should consider this trial

Good fit: Ideal candidates are men aged 18 and older with asymptomatic or minimally symptomatic metastatic castration-resistant prostate cancer.

Not a fit: Patients who have previously received Sipuleucel-T or have other malignancies requiring treatment may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a more effective immunotherapy option for patients with advanced prostate cancer.

How similar studies have performed: Other studies have shown promise with Sipuleucel-T, but this specific approach of extended dosing is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Men ≥ 18 years of age
2. Prostate cancer with history of metastasis
3. Candidates for Sipuleucel-T treatment are defined as those with asymptomatic or minimally symptomatic metastatic castrate resistant prostate cancer
4. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
5. Life expectancy of ≥ 6 months

Exclusion Criteria:

1. Previously received Sipuleucel-T (Provenge®)
2. Known malignancies other than prostate cancer likely to require treatment within 6 months following registration
3. A requirement for systemic immunosuppressive therapy (\>10mg Prednisone daily or equivalent)
4. A history of allergic reactions attributed to compounds of similar chemical or biologic composition to Sipuleucel-T or GM-CSF
5. Any infection requiring antibiotic therapy within 1 week prior to registration

Where this trial is running

Oklahoma City, Oklahoma

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Metastatic Castration-Resistant Prostate Cancer, antigen presenting cells, Sipuleucel-T, granulocyte-macrophage colony-stimulating factor, prostatic acid phosphatase

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.