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Study of PRX302 for Lower Urinary Tract Symptoms Due to Benign Prostatic Hyperplasia (BPH)

This study has been completed.
Information provided by (Responsible Party):
Sophiris Bio Corp Identifier:
First received: September 27, 2011
Last updated: August 19, 2013
Last verified: August 2013
The purpose of this study is to evaluate the safety, tolerability and efficacy of a single treatment of PRX302 for the treatment of Benign Prostatic Hyperplasia (BPH) as compared to placebo.

Condition Intervention Phase
Benign Prostatic Hyperplasia
Drug: PRX302
Drug: Placebo
Phase 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Randomized Dose-Escalation, Multicenter Safety and Efficacy Study of a Single Transrectal Intraprostatic Treatment of PRX302 for Lower Urinary Tract Symptoms (LUTS) Secondary to Benign Prostatic Hyperplasia (BPH)

Resource links provided by NLM:

Further study details as provided by Sophiris Bio Corp:

Primary Outcome Measures:
  • Safety [ Time Frame: Month 3 ]
    Safety of PRX302

  • Tolerability [ Time Frame: Month 3 ]
    Tolerability of PRX302

Secondary Outcome Measures:
  • Efficacy [ Time Frame: Month 3 ]
    Efficacy of PRX302 assessed by International Prostate Symptom Score (IPSS)

  • Efficacy [ Time Frame: Month 12 ]
    Efficacy of PRX302 assessed by Qmax

  • Pharmacokinetics [ Time Frame: Day 1 ]
    Pharmacokinetics (PK) measurements of PRX302

  • Safety [ Time Frame: Month 12 ]
    Safety of PRX302

  • Tolerability [ Time Frame: Month 12 ]
    Tolerability of PRX302

  • Efficacy [ Time Frame: Month 3 ]
    Efficacy of PRX302 assessed by uroflowmetry (Qmax)

  • Efficacy [ Time Frame: Month 12 ]
    Efficacy of PRX302 assessed by IPSS

Enrollment: 40
Study Start Date: September 2011
Study Completion Date: August 2013
Primary Completion Date: March 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: PRX302 Drug: PRX302
Single intraprostatic injection with an ascending dose per cohort of 0.75, 1.5, 3.0, and 6.0 µg/mL
Placebo Comparator: Inactive substance Drug: Placebo
Single intraprostatic injection of matching placebo


Ages Eligible for Study:   50 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Lower Urinary Tract Symptoms (LUTS) attributable to BPH for ≥6 months
  • Written informed consent prior to enrollment in the study
  • IPSS ≥12
  • Prostate volume of 30 - 100 mL as determined by TRUS
  • Maximum urine flow (Qmax) of 4 - 15 mL/sec
  • Refractory, intolerant or refused the use of alpha-blockers and/or 5 alpha-reductase inhibitors
  • Unwilling or unable to undergo conventional surgical or available minimally invasive treatments
  • Blood PSA values <10 ng/mL

Exclusion Criteria:

  • Inability to void at least 125 mL of urine
  • PVR volume >200 mL
  • Presence of or history of certain conditions that could interfere with study results or endanger subject
  • Use of certain prescribed medications that could interfere with study results
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01454349

United States, California
South Orange County Medical Research Center
Laguna Hills, California, United States, 92653
Atlantic Urology Medical Group
Long Beach, California, United States, 90806
California Professional Research
Newport Beach, California, United States, 92660
United States, Colorado
University of Colorado Denver
Aurora, Colorado, United States, 80045
United States, Florida
South Florida Medical Research
Aventura, Florida, United States, 33180
United States, Illinois
Northwestern University
Chicago, Illinois, United States, 60611
United States, Iowa
The Iowa Clinic
West Des Moines, Iowa, United States, 50266
United States, New York
Accumed Research Associates
Garden City, New York, United States, 11530
University Urology Associates
New York, New York, United States, 10016
Premier Medical Group of the Hudson Valley
Poughkeepsie, New York, United States, 12601
United States, Ohio
TriState Urological Services
Cincinnatti, Ohio, United States, 45212
United States, Pennsylvania
Urologic Consultants of SE Pennsylvania
Bala Cynwyd, Pennsylvania, United States, 19004
United States, South Carolina
Carolina Urologic Research Center
Myrtle Beach, South Carolina, United States, 29572
United States, Texas
Research Across America
Carrollton, Texas, United States, 75010
UT Southwestern Medical Center
Dallas, Texas, United States, 75390
Sponsors and Collaborators
Sophiris Bio Corp
Study Director: Richard C. Yocum, MD Sophiris Bio Corp
  More Information

Responsible Party: Sophiris Bio Corp Identifier: NCT01454349     History of Changes
Other Study ID Numbers: PRX302-2-06
Study First Received: September 27, 2011
Last Updated: August 19, 2013

Keywords provided by Sophiris Bio Corp:
Benign prostatic hyperplasia
Enlarged prostate
Lower urinary tract symptoms (LUTS)

Additional relevant MeSH terms:
Prostatic Hyperplasia
Lower Urinary Tract Symptoms
Pathologic Processes
Prostatic Diseases
Genital Diseases, Male
Urological Manifestations
Signs and Symptoms processed this record on April 21, 2017