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Therapeutic Effect of Cytoreductive Radical Prostatectomy in Men With Newly Diagnosed Metastatic Prostate Cancer

SIMCAP (Surgery in Metastatic Carcinoma of Prostate): Phase 2.5 Multi-Institution Randomized Prospective Clinical Trial Evaluating the Impact of Cytoreductive Radical Prostatectomy Combined With Best Systemic Therapy on Oncologic and Quality of Life Outcomes in Men With Newly Diagnosed Metastatic Prostate Cancer

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03456843
Enrollment
190
Registered
2018-03-07
Start date
2018-03-20
Completion date
2027-03-01
Last updated
2026-01-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stage IV Prostate Adenocarcinoma AJCC v7

Brief summary

This randomized phase II trial studies how well surgical removal of the prostate and antiandrogen therapy with or without docetaxel work in treating men with newly diagnosed prostate cancer that has spread to other places in the body. Androgens can cause the growth of prostate cancer cells. Antiandrogen therapy may lessen the amount of androgens made by the body. Drugs used in chemotherapy, such as docetaxel work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Surgery, antiandrogen therapy and docetaxel may work better in treating participants with prostate cancer.

Detailed description

PRIMARY OBJECTIVES: I. To assess the clinical benefit of combining radical surgery cytoreductive radical prostatectomy (CRP) - with the best systemic therapy (BST) in men with newly diagnosed clinical metastatic prostate cancer (mPCa). SECONDARY OBJECTIVES: I. To determine the impact of CRP+BST on time to biochemical progression, cancer-specific survival, overall survival, complication rates, and quality of life (QOL) in patients with mPCa. II. To determine the transcription levels of bone morphogenetic protein -6 (BMP-6) and transforming growth factor-beta (TGF-?). OUTLINE: Participants are randomized to 1 of 2 arms. ARM I: Participants receive antiandrogen therapy with or without docetaxel at the discretion of the treating physician. ARM II: Participants receive antiandrogen therapy for at least 1 month, then undergo cytoreductive radical prostatectomy. Participants continue antiandrogen therapy and may receive docetaxel prior to surgery at the discretion of the treating physician. After completion of study treatment, patients are followed up every 6 months from time of progression.

Interventions

To demonstrate at least 30% improvement in FFS at 2 years after randomization with the power of 90% and error of 5% on a one-sided exponential MLE test.

DRUGDocetaxel

To demonstrate at least 30% improvement in FFS at 2 years after randomization with the power of 90% and error of 5% on a one-sided exponential MLE test.

OTHERLaboratory Biomarker Analysis

Correlative studies

PROCEDUREQuality-of-Life Assessment

Ancillary studies

OTHERQuestionnaire Administration

Ancillary studies

PROCEDURERadical Prostatectomy

Undergo cytoreductive radical prostatectomy

Sponsors

Yale University
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologically proven adenocarcinoma of the prostate * Evidence of metastasis by magnetic resonance imaging (MRI)/computed tomography (CT) scan, bone scan, or histologic confirmation * Clinical stage M1a (distant lymph node positive), M1b (bone metastasis), or M1c (solid organ metastasis. * If solitary lesion, metastasis confirmed with either biopsy or two independent imaging modalities (i.e. CT and PET \[positron emission tomography\], bone scan and MRI, modality at the discretion of the treating physician) * No previous local therapy for prostate cancer (i.e prostate radiation, cryotherapy, etc.) * Give informed consent * Prostate deemed resectable by surgeon * Plans to start or has already started antiandrogen therapy (ADT) no longer than 6 months prior to consent * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Hemoglobin (HgB) \>= 9 g/dL compatible for surgery * Platelets \> 80,000/mcL compatible for surgery * Aspartate aminotransferase (AST) =\< 2x upper limit of normal (ULN) compatible for surgery * Alanine aminotransferase (ALT) =\< 2x upper limit of normal (ULN) compatible for surgery

Exclusion criteria

* Refuses to give informed consent * Deemed to have unresectable disease by surgeon * Received ADT for more than 6 months prior to consent * Life expectancy of less than 6 months prior to consent * Active spinal cord compression * Deep vein thrombosis (DVT) / pulmonary embolism (PE) in the past 6 months prior to consent * Previous local therapy for prostate cancer * Patients who have chemotherapy or radiotherapy for non-prostate cancer related treatment within 3 weeks prior to consent

Design outcomes

Primary

MeasureTime frameDescription
Failure-free survival (FFS)At 2 yearsFailure is defined as any one of the following events: PSA progression, clinical progression, radiographic progression, or death from prostate cancer. The % of men who fail within 2 years of randomization will be compare between the two groups using a one-sided log-rank test.

Secondary

MeasureTime frame
Cancer-specific survivalUp to 2 years
Overall complication rateUp to 2 years
Time to biochemical progressionUp to 2 years
Overall survivalThrough study completion, a minimum of 4 years

Countries

Australia, China, Japan, South Korea, Taiwan, United States

Contacts

PRINCIPAL_INVESTIGATORIsaac Kim, MD

Yale University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026