Prostate Cancer - Comparative Outcomes of New Conceptual Paradigms for Treatment (PC-CONCEPT)

This study will use a population-based cohort design to study men with newly diagnosed low- and intermediate-risk prostate cancer at high-volume centers in Southern California (SCa) and New York State (NYS). Complications of contemporary treatments for prostate cancer and quality of life outcomes, such as general health, urinary, sexual, and bowel function, cancer anxiety, and treatment regret will be compared and tracked over the course of this study.

Study Overview

Status

Completed

Conditions

Detailed Description

Prostate cancer remains the most commonly diagnosed, solid organ tumor and the second most common cause of cancer death in U.S. men. Technological advances have enabled new treatment options, such as stereotactic body radiation therapy (SBRT) and partial gland ablation (PGA). Although heavily marketed as more convenient with fewer side effects, there is an absence of high-level, comparative effective research (CER) to discern relative outcomes to traditional therapies such as active surveillance (AS), radical prostatectomy (RP) and intensity modulated radiation therapy (IMRT).

Investigators hypothesize that PGA will be associated with less reduction of urinary and sexual function compared to before treatment than both RP and IMRT. SBRT is hypothesized to be associated with less reduction of urinary and sexual function before treatment compared to RP and IMRT. SBRT is hypothesized to be associated with less reduction in bowel function compared to IMRT. PGA hypothesized to be associated with better overall quality of life at 12 months compared to AS. Investigators hypothesize PGA and SBRT will be associated with fewer adverse events compared to RP and IMRT.

The investigators will conduct a pragmatic, population-based cohort study of men with newly diagnosed low and intermediate risk prostate cancer in Southern California (SCa) and New York State (NYS) Surveillance Epidemiology and End Results (SEER) regions to bridge the evidence gap concerning adverse events and patient reported outcomes. This study will inform multiple stakeholders, who contributed to the study design. Stakeholders include prostate cancer survivors, payers, medical device manufacturers, professional organizations, community and academic prostate cancer experts and the Food and Drug Administration (FDA).

Study Type

Observational

Enrollment (Actual)

1953

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • California
      • Los Angeles, California, United States, 90033
        • University of Southern California
    • Kansas
      • Kansas City, Kansas, United States, 66160
        • University of Kansas
    • New York
      • Albany, New York, United States, 11204
        • New York State Department of Health
      • New York, New York, United States, 10065
        • Weill Cornell Medicine

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Subjects with a diagnosis of prostate cancer who meet the inclusion and exclusion criteria will be eligible for participation in this study.

Description

Inclusion Criteria:

  • Pathologically-confirmed clinically localized prostate adenocarcinoma with National Comprehensive Cancer Network (NCCN) low (T1-T2a, Gleason 6, Grade Group 1, PSA <10 ng/mL) or intermediate risk (T2b-T2c or, Gleason 7, Grade Group 2 or 3 or PSA 10-20 ng/mL)72 at one of the selected hospitals in SCa and NYS
  • Diagnosis date during the 18 month recruitment window
  • Able to read/speak English or Spanish
  • Agree to participate by completing the baseline questionnaire

Exclusion Criteria:

  • Clinically metastatic disease or high-risk PCa (T3a-T4, Gleason Grade Group 4 or 5 or PSA >20 ng/mL
  • Unable to read/speak English or Spanish
  • Unwilling or unable to give informed consent.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Active Surveillance (AS)
Doctor will monitor the patient without directly treating the cancer.
Validated questionnaires administered at baseline, 8 months following treatment, and 12 months following treatment.
Stereotactic Body Radiation Therapy (SBRT)
Radiation treatment of prostate cancer requiring less than 2 weeks of treatment.
Validated questionnaires administered at baseline, 8 months following treatment, and 12 months following treatment.
Intensity-Modulated Radiation Therapy (IMRT)
Radiation treatment of prostate cancer requiring more than 2 weeks of treatment.
Validated questionnaires administered at baseline, 8 months following treatment, and 12 months following treatment.
Partial Gland Ablation (PGA)
Prostate cancer treatment that involves only treating part of the prostate that has cancer. Examples include, but are not limited to, high intensity focused ultrasound (HIFU) and cryotherapy.
Validated questionnaires administered at baseline, 8 months following treatment, and 12 months following treatment.
Radical Prostatectomy (RP)
Prostate surgery that removes the whole prostate.
Validated questionnaires administered at baseline, 8 months following treatment, and 12 months following treatment.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Assessment of Treatment Regret as Measured on Clark's Prostate Cancer Health Worry
Time Frame: 8 months
Clark's Prostate Cancer Health Worry is a 5-item questionnaire measuring treatment regret. All items are scored 0-100, with higher scores indicating greater treatment regret.
8 months
Assessment of Treatment Regret as Measured on Clark's Prostate Cancer Health Worry
Time Frame: 12 months
Clark's Prostate Cancer Health Worry is a 5-item questionnaire measuring treatment regret. All items are scored 0-100, with higher scores indicating greater treatment regret.
12 months
Assessing Percentage of Participants Who Reported Adverse Events Following Treatment by Common Terminology Criteria for Adverse Events (CTCAE) v5.0
Time Frame: 8 months

All adverse events will be graded as an event occurred, event will indicate an adverse event occurred.

observations only; intervention not indicated.

8 months
Assessing Percentage of Participants Who Reported Adverse Events Following Treatment by Common Terminology Criteria for Adverse Events (CTCAE) v5.0
Time Frame: 12 months

All adverse events will be graded as an event occurred, event will indicate an adverse event occurred.

observations only; intervention not indicated.

12 months
Change in Patient-Reported Quality of Life as Measured on EQ-5D-5L
Time Frame: 8 months, 12 months
Adjusted quality of life scores for active surveillance (AS), radical prostatectomy (RP) and partial gland ablation (PGA) at 8 and 12 months showing the mean reported score on a scale from 0-100 with a higher score indicating better function or better health.
8 months, 12 months
Change in Patient-Reported Urinary Function, Urinary Incontinence, Urinary Irritation, Sexual Function, Bowel Function and Hormonal Function as Measured on Expanded Prostate Cancer Index Composite (EPIC-26)
Time Frame: 8 months, 12 months
The Expanded Prostate Cancer Index Composite (EPIC-26) is a 26-item questionnaire, dichotomized by severity, assessing four domains: urinary, sexual, bowel, and hormonal function. Each domain is scored 0-100, with higher scores indicating greater dysfunction.
8 months, 12 months
Change in Ejaculatory Function as Measured on Male Sexual Health Questionnaire - Ejaculatory Function and Related Distress (MSHQ-EjD)
Time Frame: 8 months, 12 months
The Male Sexual Health Questionnaire - Ejaculatory Function and Related Distress (MSHQ-EjD) is a 4-item questionnaire measuring severity of ejaculatory dysfunction. The 4 items are degree of bother, ejaculatory force, ejaculatory volume, and frequency of ejaculation, and the total score is measured on a scale of 1-20, with higher scores indicating greater dysfunction. Scores were adjusted for age, race (Black, white or other), number of comorbidities (0, 1, 2, >= 3) and NCCN risk (low vs intermediate).
8 months, 12 months
Patient-Reported Anxiety Based on Memorial Anxiety Prostate Cancer Questionnaire (MAX-PC)
Time Frame: 12 months
The Memorial Anxiety Scores for Prostate Cancer (MAX-PC) is an 18-item questionnaire measuring treatment anxiety. Total scores ranged from 0-54, with higher scores associated with higher anxiety, the mean of patient reported MAX-PC scores by treatment group are shown below.
12 months
Assessment of Cancer Recurrence Following Treatment as Measured by Prostate Specific Antigen Levels
Time Frame: 8 months
Patient PSA levels (ng/mL) will be obtained through medical record review of laboratory (blood) results. Information below reflects the percentage of subjects that were estimated to have risk of recurrence based on their reported PSA by treatment group.
8 months
Assessment of Cancer Recurrence Following Treatment as Measured by Prostate Specific Antigen Levels
Time Frame: 12 months
Patient PSA levels (ng/mL) will be obtained through medical record review of laboratory (blood) results. Information below reflects the percentage of subjects that were estimated to have risk of recurrence based on their reported PSA by treatment group.
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Jim Hu, MD MPH, Weill Medical College of Cornell University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 15, 2021

Primary Completion (Actual)

April 30, 2024

Study Completion (Actual)

April 30, 2024

Study Registration Dates

First Submitted

May 13, 2021

First Submitted That Met QC Criteria

May 13, 2021

First Posted (Actual)

May 18, 2021

Study Record Updates

Last Update Posted (Actual)

May 22, 2025

Last Update Submitted That Met QC Criteria

May 12, 2025

Last Verified

May 1, 2025

More Information

Terms related to this study

Other Study ID Numbers

  • 20-08022531 (Other Identifier: Weill Cornell Medicine Institutional Review Board)
  • CER-2019C1-15682 (Other Grant/Funding Number: Patient-Centered Outcomes Research Institute)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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