Study of Sipuleucel-T With or Without Continuing New Hormonal Agents in Metastatic Prostate Cancer

NCT ID: NCT05751941

Last Updated: 2025-12-15

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: PHASE2
• Total Enrollment: 26 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-02-14
• Study Completion Date: 2026-12-31

Brief Summary

This study is designed to test the hypothesis that using Sipuleucel-T (Provenge) in combination with new hormonal agents (NHA) (abiraterone, enzalutamide, apalutamide) for the treatment of participants with asymptomatic metastatic castration resistant prostate cancer (mCRPC) and no visceral metastases would enhance the activation of antigen presenting cells (APC) by sipuleucel-T.

Conditions

Prostate Cancer; Metastatic Prostate Cancer

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Sipuleucel-T with NHA

Participants will continue taking New Hormonal Agents (NHA) while receiving sipuleucel-t as standard of care.

Group Type: EXPERIMENTAL

Abiraterone

Intervention Type: DRUG

1000 mg of Abiraterone will be given orally daily plus prednisone 5-10 mg daily

Enzalutamide

Intervention Type: DRUG

160 mg of Enzalutamide will be given orally daily ending at week 4

Apalutamide

Intervention Type: DRUG

240 mg of Apalutamide will be given orally daily ending at week 4

Sipuleucel-T

Intervention Type: DRUG

Sipuleucel-T is considered standard of care and will be infused into the participant three times at approximately 2-week intervals starting week 0, 2 and 4.

Sipuleucel-T without NHA

Participants will discontinue use of New Hormonal Agents (NHA) while receiving sipuleucel-t as standard of care.

Group Type: EXPERIMENTAL

Sipuleucel-T

Intervention Type: DRUG

Sipuleucel-T is considered standard of care and will be infused into the participant three times at approximately 2-week intervals starting week 0, 2 and 4.

Interventions

Abiraterone

1000 mg of Abiraterone will be given orally daily plus prednisone 5-10 mg daily

Intervention Type: DRUG

Enzalutamide

160 mg of Enzalutamide will be given orally daily ending at week 4

Intervention Type: DRUG

Apalutamide

240 mg of Apalutamide will be given orally daily ending at week 4

Intervention Type: DRUG

Sipuleucel-T

Sipuleucel-T is considered standard of care and will be infused into the participant three times at approximately 2-week intervals starting week 0, 2 and 4.

Intervention Type: DRUG

Other Intervention Names

Xtandi; Provenge

Eligibility Criteria

Inclusion Criteria

• Asymptomatic or minimally symptomatic metastatic prostate cancer, and the diagnosis of prostate cancer needs to be histologically confirmed by biopsy of the prostate or a metastatic lesion
• On combined ADT with LHRH analog and a NHA (enzalutamide, apalutamide or abiraterone) for metastatic prostate cancer with PSA progression, but no imaging progression based on the prostate cancer working group (PCWG) 3 criteria
• Age 18 or above
• ECOG performance status 0 or 1
• Participants must have adequate organ and marrow function as defined below:
• Absolute neutrophil count ≥1,000/mcL
• Platelets ≥100,000/mcL
• Hemoglobin > 10 g/dl
• AST(SGOT)/ALT(SGPT) ≤3 × institutional ULN
• Creatinine 1.5 ≤ institutional ULN
• Human immunodeficiency virus (HIV)-infected participants on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial.
• For participants with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated
• Participants with a history of hepatitis C virus (HCV) infection must have been treated and cured. For participants with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load
• Participants with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of sipuleucel-T are eligible for this trial
• No uncontrolled arrhythmia: patients with h/o myocardial infarction or history of congestive heart failure, need to have estimated left ventricle ejection fraction above 40% either on echocardiogram or MUGA scan within 6 months of study enrollment
• Non-sterilized men who are sexually active with a female partner of childbearing potential must agree to use adequate contraception prior to the study enrollment, and for the duration of study participation
• Ability to understand and the willingness to sign a written informed consent document

Exclusion Criteria

• Participants who have had chemotherapy or radiotherapy within 4 weeks prior to entering the study
• Prior treatment with sipuleucel-T
• Participants who have not recovered from adverse events (AEs) due to prior anti-cancer therapy (i.e., have residual toxicities > Grade 2).
• Participants who require > 50% dose reduction of NHA are excluded from the study except for taking abiraterone at 250 mg with low fat food
• Documented brain metastases or liver metastases
• Treatment with any investigational compound within 30 days prior to the first dose of Sipuleucel-T
• Documented brain metastases or liver metastases
• Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
• Known history of testing positive for human immunodeficiency virus (HIV) or known acquired immunodeficiency syndrome. HIV-positive participants on combination antiretroviral therapy are ineligible because of the potential for sipluleucel-T to be less clinically active in this population
• Inability to comply with protocol requirements

• Minimum Eligible Age: 18 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: No

Sponsors

Dendreon

INDUSTRY

Sponsor Role: collaborator

H. Lee Moffitt Cancer Center and Research Institute

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Jingsong Zhang, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Moffitt Cancer Center

Locations

Moffitt Cancer Center

Tampa, Florida, United States

Site Status: RECRUITING

Countries

United States

Central Contacts

Jingsong Zhang, MD, PhD

Role: CONTACT

Jingsong.Zhang@moffitt.org

813-745-1363

Facility Contacts

Juliet Bala

Role: primary

Juliet.Bala@moffitt.org

Related Links

https://moffitt.org/clinicaltrialssearch?DiseaseSite=&q=220033

Moffitt Cancer Center Clinical Trial Search

Other Identifiers

MCC-22003

Identifier Type: -

Identifier Source: org_study_id