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Spots Global Cancer Trial Database for Pembrolizumab in Treating Patients With Metastatic Castration Resistant Prostate Cancer Previously Treated With Enzalutamide

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Trial Identification

Brief Title: Pembrolizumab in Treating Patients With Metastatic Castration Resistant Prostate Cancer Previously Treated With Enzalutamide

Official Title: Addition of Pembrolizumab Upon Progression on Enzalutamide in Men With mCRPC

Study ID: NCT02312557

Study Description

Brief Summary: This phase II trial studies how well pembrolizumab works in treating patients with prostate cancer that has spread to other places in the body and keeps growing even when the amount of testosterone in the body is reduced to very low levels despite previous treatment with enzalutamide. Monoclonal antibodies, such as pembrolizumab, may block tumor growth in different ways by targeting certain cells.

Detailed Description: PRIMARY OBJECTIVES: I. Measure the anti-cancer activity of pembrolizumab in men with metastatic, castration resistant prostate cancer. SECONDARY OBJECTIVES: I. To investigate immunological and genetic parameters to evaluate for possible markers and functional changes that are predictive of a clinical response or linked to response or resistance to PD-1 inhibition. II. To collect circulating tumor cells (CTCs) and determine the degree to which tumor characteristics are shared by the CTCs. III. Changes in T cell numbers, activation, and phenotype as measured in whole blood at diagnosis and throughout therapy. IV. Systemic inflammatory markers: serum interleukin (IL)-8, IL-6, IL-1, tumor necrosis factor (TNF) and transforming growth factor (TGF)-beta. V. Objective disease response by radiographs. VI. Prostate-specific antigen (PSA) progression free survival. VII. Overall survival. VIII. Microbiome and correlation with response. TERTIARY OBJECTIVES: I. Additional genetic (deoxyribonucleic acid \[DNA\], ribonucleic acid \[RNA\]) and protein analyses will be conducted to further evaluate immunotherapy and profile/characterize disease. OUTLINE: INITIAL TREATMENT PHASE: Patients who are progressing on enzalutamide will receive pembrolizumab intravenously (IV) over 30 minutes on day 1. Treatment repeats every 3 weeks for 4 courses in the absence of disease progression or unacceptable toxicity. Patients continue to receive standard of care enzalutamide orally (PO) daily. MONITORING PHASE: After completion of the initial treatment phase, patients continue to receive standard of care enzalutamide PO daily for the duration of the trial. RETREATMENT PHASE: Patients with disease response or stability after the initial treatment phase will receive pembrolizumab IV over 30 minutes on day 1. Treatment repeats every 3 weeks for an additional 4 courses in the absence of disease progression or unacceptable toxicity. Patients continue to receive standard of care enzalutamide PO daily for the duration of the trial. After completion of study treatment, patients are followed up at 30 days, and then every 12 weeks for 2.5 years.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: MALE

Healthy Volunteers: No

Locations

OHSU Knight Cancer Institute, Portland, Oregon, United States

Contact Details

Name: Julie Graff, M.D.

Affiliation: OHSU Knight Cancer Institute

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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