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Prospective Validation of Prostate Biomarkers for Repeat Biopsy (PRIORITY)

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ClinicalTrials.gov Identifier: NCT03082274
Recruitment Status : Unknown
Verified August 2018 by MDx Health.
Recruitment status was:  Enrolling by invitation
First Posted : March 17, 2017
Last Update Posted : August 17, 2018
Information provided by (Responsible Party):
MDx Health

Tracking Information
First Submitted Date February 28, 2017
First Posted Date March 17, 2017
Last Update Posted Date August 17, 2018
Actual Study Start Date March 31, 2017
Estimated Primary Completion Date December 30, 2019   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures
 (submitted: March 10, 2017)
Validate ConfirmMDx for Prostate Cancer to predict the outcome of repeat biopsy [ Time Frame: 1 year ]
The primary objectives of this prospective, multi-center study are twofold:
  • Validate use of the ConfirmMDx for Prostate Cancer to predict the outcome of a repeat biopsy in men with a previous negative prostate biopsy using tissue.
  • Validate use of the SelectMDx for Prostate Cancer to predict the outcome of a repeat biopsy in men with a previous negative prostate biopsy using urine.
Original Primary Outcome Measures Same as current
Change History
Current Secondary Outcome Measures
 (submitted: March 10, 2017)
Comparison between clinical and pathological outcomes [ Time Frame: 1 year ]
Subset analyses conducted in appropriate groups, such as patients with available data from radical prostatectomy, and correlate this data with the ConfirmMDx and SelectMDx results.
  • Evaluate rate of cancer detection on repeat biopsy and associated complications.
  • Evaluate the findings of MRI fusion biopsy with standard 12 core TRUS guided biopsy (if available).
Original Secondary Outcome Measures Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title Prospective Validation of Prostate Biomarkers for Repeat Biopsy
Official Title Prospective Validation of Prostate Biomarkers for Repeat Biopsy: The PRIORITY Study
Brief Summary

Target enrollment is 1000 prospectively enrolled subjects with an initial negative biopsy scheduled for repeat biopsy.

Subjects must have had their negative index prostate biopsy procedure within 30 months of being scheduled for their repeat biopsy.

All enrolled subjects will have all core tissues from the initial negative biopsy blinded and tested with the assay.

All subjects will have serum and plasma samples obtained prior to DRE, and a urine sample collected immediately following DRE but in advance of the repeat biopsy; samples will be blinded and sent to MDxHealth for evaluation.

Detailed Description Not Provided
Study Type Observational
Study Design Observational Model: Case-Only
Time Perspective: Prospective
Target Follow-Up Duration Not Provided
Biospecimen Retention:   Samples With DNA
Serum and plasma from each subject will be collected and stored for up to 10 years for future research.
Sampling Method Non-Probability Sample
Study Population

ConfirmMDx assay will be utilized to blindly test the needle biopsy cores of the index negative prostate biopsy (all cores) of men about to undergo repeat prostate biopsy. It is postulated that the test may aid in improved patient risk stratification for repeat biopsy, discriminating patients with no cancer/low grade prostate cancer (GS6) who are at sufficiently low risk to avoid repeat biopsy, while also identifying patients at increased risk for clinical significant disease (≥ GS7) who may benefit from early intervention.

In this current study, SelectMDx will be used to blindly test urine samples obtained preceding a repeat prostate biopsy to validate the test's ability to predict risk for high-grade disease. The intent is to demonstrate the test's ability to non-invasively stratify those patients at risk for aggressive disease, who require a repeat prostate biopsy, versus those at sufficiently low risk who may avoid unnecessary repeat biopsy.

Condition Prostate Cancer
  • Diagnostic Test: ConfirmMDx
    ConfirmMDx is a molecular diagnostic assay which utilizes DNA isolated from biopsy tissues to determine if aberrant DNA methylation is occurring in three genes: GSTP1, RASSF1 and APC. ConfirmMDx is currently available to clinicians for use in cancer-negative extended-core biopsies to determine if occult cancer is present in the prostate.
  • Diagnostic Test: SelectMDx
    SelectMDx for Prostate Cancer is a reverse-transcription PCR (RT-PCR) assay performed on post-DRE, first-void urine specimens from patients with clinical risk factors for prostate cancer, who are being considered for biopsy. The test measures the mRNA levels of the DLX1 and HOXC6 biomarkers, using KLK3 as internal reference gene, to aid in patient selection for prostate biopsy.
Study Groups/Cohorts Men age 40-85 years with an initial negative prostate biopsy
Men age 40 - 85 years of age Previous negative prostate biopsy within 30 months.
  • Diagnostic Test: ConfirmMDx
  • Diagnostic Test: SelectMDx
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status Unknown status
Actual Enrollment
 (submitted: March 10, 2017)
Original Actual Enrollment Same as current
Estimated Study Completion Date December 30, 2019
Estimated Primary Completion Date December 30, 2019   (Final data collection date for primary outcome measure)
Eligibility Criteria

Inclusion Criteria:

  • Males, aged 40 years to 85, who underwent a previous cancer-negative prostate biopsy within 30 months of being scheduled for a repeat biopsy.
  • The initial TRUS guided negative prostate biopsy must have collected a minimum of 10 tissue cores and sections from all prostate biopsy cores collected by the physician must be submitted to MDxHealth in order to allow for full comprehensive testing/evaluation of all the sections of the patient's prostate prior to the scheduled repeat biopsy.
  • Minimum tissue volume criteria of 20 microns of prostate biopsy core tissue is available (40 microns preferable).
  • Previous biopsy histology may include the presence of high-grade prostatic intraepithelial neoplasia (HGPIN), proliferative inflammatory atrophy (PIA), glandular inflammation, atypical small acinar proliferation (ASAP) or atypical cells.
  • Tissue was extracted using standard TRUS guided biopsy core extraction (and not transurethral resection of the prostate (TURP).
  • Pre-DRE serum sample, pre-DRE plasma sample, and Post-DRE urine sample to be collected in advance of the repeat biopsy. Samples can be collected within three months of the scheduled repeat biopsy, up until the day of, but prior to, the procedure.

Exclusion Criteria:

  • Patient who has undergone previously testing by ConfirmMDx from the same biopsy
  • Patients with prior diagnosis of prostate cancer in any previous biopsy.
  • Patients with a limited life expectancy and generally not considered for a repeat Tissue extracted using transurethral resection of the prostate (TURP) procedures
  • Patients with a history of cancer (except basal cell carcinoma)
Sexes Eligible for Study: Male
Ages 40 Years to 85 Years   (Adult, Older Adult)
Accepts Healthy Volunteers Yes
Contacts Contact information is only displayed when the study is recruiting subjects
Listed Location Countries United States
Removed Location Countries  
Administrative Information
NCT Number NCT03082274
Other Study ID Numbers PRIORITY
Has Data Monitoring Committee No
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement
Plan to Share IPD: No
Current Responsible Party MDx Health
Original Responsible Party Same as current
Current Study Sponsor MDx Health
Original Study Sponsor Same as current
Collaborators Not Provided
Investigators Not Provided
PRS Account MDx Health
Verification Date August 2018