for people ages 18-100 (full criteria)
at San Francisco, California and other locations
study started
estimated completion:
Charles Eichler



This research study is designed to assess the safety and effectiveness of an experimental drug called PRT-201 in patients both receiving or expecting to receive dialysis who have chronic kidney disease and who are undergoing surgery to create a new access point to their bloodstream for hemodialysis. PRT-201 is a protein that has been shown in previous research studies to help keep vessels patent when applied to the outside surface of the blood vessels (arteries and veins) in patients who undergo surgery to create an arteriovenous fistula (AVF). The purpose of this study is to determine whether PRT-201 when applied to a limited segment of your blood vessel (about 2 inches) immediately after surgery is safe and improves the patency of your AVF.

Official Title

Multicenter, Double-Blind, Placebo-Controlled Study of PRT-201 Administered Immediately After Radiocephalic Arteriovenous Fistula Creation in Patients With Chronic Kidney Disease


Chronic Kidney Disease radiocephalic arteriovenous fistula AVF hemodialysis PRT-201 vascular access kidney renal vonapanitase PATENCY-1 Kidney Diseases Renal Insufficiency, Chronic Fistula


You can join if…

Open to people ages 18-100

  1. Age of at least 18 years.
  2. Life expectancy of at least 6 months.
  3. Diagnosis of Chronic Kidney Disease (CKD).
  4. Planned creation of a new radiocephalic arteriovenous fistula (AVF)-revision of an existing AVF is not eligible.
  5. Ability to understand and comply with the requirements of the entire study and to communicate with the study team.
  6. Written informed consent using a document that has been approved by the Institutional Review Board (IRB).
  7. If female and of childbearing potential (premenopausal and not surgically sterile)must have a negative serum pregnancy test at the screening visit (Visit 1) and be willing to use contraception from the time of the screening visit to 2 weeks following study drug administration. Acceptable methods of birth control include abstinence,barrier methods, hormones, or intra uterine device.

You CAN'T join if...

  1. Malignancy or treatment for malignancy within the previous 12 months with the exception of the following cancers if they have been resected: localized basal cell or squamous cell skin cancer, or any cancer in situ.
  2. Presence of any significant medical condition that might significantly confound the collection of safety and efficacy data in this study.
  3. Previous treatment with PRT 201.
  4. Treatment with any investigational drug within the previous 30 days or investigational antibody therapy within the previous 90 days prior to signing informed consent.


  • UCSF Division of Vascular & Endovascular Surgery
    San Francisco California 94143 United States
  • Keck University Hospital at USC
    Los Angeles California 90033 United States


in progress, not accepting new patients
Start Date
Completion Date
Proteon Therapeutics
Phase 3
Lead Scientist
Charles Eichler
Study Type
Last Updated